@˜_•ΆƒŠƒXƒg(Έ“Η•t‚«)

 

134) Scanning SQUID Microscope Study of Vortex Polygons and Shells in Weak Pinning Disks of an Amorphous Superconducting Film,

N.Kokubo, S.Okayasu, A. Kanda, and B. Shinozaki,

PHYSICAL REVIEW B, 82, 014501-1-014501-8 (2010).

 

133) Effect of strong gravity on Y1Ba2Cu3O7-x superconductor,

R.Bagum, A.Yoshiasa, S.Okayasu, Y.Iguchi, M.Ono,M.Okube,and T.Mashimo,

JOURNAL OF APPLIED PHYSICS, 108, 053517-1-053517-7 (2010).

 

132) History dependent vortex configurations in superconducting disks of amorphous MoGe,

N.Kokubo, S.Okayasu, A.Kanda, and B.Shinozaki,

J. Phys.: Conf. Ser. , 150, 022044-1-022044-4 (2009).

 

131) Development of Special Rotor for Centrifugal Separation of Isotopes in Solid Pure-Metals

M.Ono, M.Sueyoshi, S.Okayasu et.al.,

REVIEW OF SCIENTIFIC INSTRUMENTS, 80, 083908 -1-6 (2009)

 

130) On-Line Diffusion Tracing in Li Ionic Conductors by the Short-Lived Radioactive Beam of Li-8,

Jeong, SC; Katayama, I; Kawakami, H, et al.,

JAPANESE JOURNAL OF APPLIED PHYSICS, 47 ,8 ,6413-6415 (2008).

 

129) Shell structures of vortices in superconducting disks of an amorphous MoGe film,

Kokubo, N; Okayasu, S; Shinozaki, B

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 468 ,15-20 ,1316-1318 (2008).

 

128) Effect of heavy ion irradiation on critical current property in DyBCO coated conductors,

Isobe, G; Kiuchi, M; Otabe, ES, et al.

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,468 ,15-20 ,1656-1660 (2008).

 

127) Alpha-ray detection with a MgB2 transition edge sensor,

Okayasu, S; Katagiri, M; Hojou, K, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,468 ,15-20 ,1998-2000   (2008).

 

126) c-Axis-correlated pinning properties in heavy-ion-irradiated Y123 films,

Namba, M; Awaji, S; Watanabe, K, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS , 468 ,15-20 ,1652-1655 (2008).

 

125) Gravity-induced diffusion of isotope atoms in monoatomic solid Se,

Mashimo, T; Ono, M; Huang, XS, et al.,

EPL   ,81   ,5   Article Number56002   (2008).

 

124) Observation of an extended magnetic field penetration in amorphous superconducting MoGe films,

Nishio, T; Okayasu, S; Suzuki, J, et al.,

PHYSICAL REVIEW B   ,77   ,5   Article Number052503   (2008).

 

123) High-energy ion irradiation effects on atomic structures and optical properties of copper oxide and electronic sputtering,

Matsunami, N; Sataka, M; Okayasu, S, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,266 ,12-13 ,2986-2989 (2008).

 

122) The effect of heavy ion irradiation on the critical current density in DyBCO coated conductors,

Matsushita, T; Isobe, G; Kimura, K, et al.,

SUPERCONDUCTOR SCIENCE & TECHNOLOGY,21 ,5 Article Number054014   (2008).

 

 

121) Effect of c-axis-correlated disorders on the vortex diagram of the pinning state,

Namba, M; Awaji, S; Watanabe, K, et al.,

APPLIED PHYSICS EXPRESS,1 ,3  DOI10.1143/APEX.1.031703   (2008).

 

120) Superconducting MgB2 thin film detector for neutrons,

Ishida, T; Nishikawa, M; Fujita, Y, et al.,

JOURNAL OF LOW TEMPERATURE PHYSICS ,151 ,3-4 ,1074-1079 (2008).

 

119) Chemistry in mega-gravityPreparation of molecular-scaled graded materials from radical copolymerization,

Ihara, H; Abe, Y; Miyamoto, A, et al.,

CHEMISTRY LETTERS ,37 ,2 ,200-201   (2008).

 

118) Sedimentation of isotope atoms in monatomic liquid Se,

Mashimo, T; Ono, M; Huang, XS, et al.,

APPLIED PHYSICS LETTERS  ,91 ,23 ,231917 (2007).

 

117) Giant tunnel magnetoresistance in codeposited fullerene-cobalt films in the low bias-voltage regime,

Sakai, S; Sugai, I; Mitani, S, et al.,

APPLIED PHYSICS LETTERS ,91 ,24 ,242104 (2007).

 

116) A trial usage of microprobes for improvement of a scanning SQUID microscope,

Okayasu, S; Kokubo, N; Kakeya, I,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,463 ,294-296   (2007).

 

115) Vortex phase diagram in heavy ion irradiated untwinned YBa2Cu3Oy single crystals,

Kobayashi, N; Nishizaki, T; Kasuga, K, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,460 ,1204-1205   (2007).

 

 

114) Formation of atomic-scale graded structure in Se-Te semiconductor under strong gravitational field,

Huang, XS; Ono, M; Ueno, H, et al.,

JOURNAL OF APPLIED PHYSICS ,101 ,11 ,113502   (2007)

 

113) Electronic sputtering of nitrides by high-energy ions,

Matsunami, N; Sataka, M; Okayasu, S, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,256 , 1 , 333-336   (2007).

 

112) Structure of beam tracks induced by swift heavy ions in Bi2Sr2CaCu2O8 superconductors,

Sasase, M; Okayasu, S; Yamamoto, H, et al.,

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS,46,783-786 (2007).

 

111) Influence of anisotropy and pinning centers on critical current properties in Bi-2212 superconductors,

Haraguchi, T; Takayama, S; Kiuchi, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,445,123-127 (2006).

 

110) Pinning characteristics at high fields in superconducting (Bi,Pb)-2223 single crystals,

Kohno, I; Kiuchi, M; Otabe, ES, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,445,137-140 (2006).

 

109) Vortex imaging in Tl-based superconductors with a scanning SQUID microscopy,

Okayasu, S; Nishio, T; Ono, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,445 ,245-248 (2006).

 

108) Irradiation effects with 100 MeV Xe ions on optical properties of Al-doped ZnO films,

Fukuoka, O; Matsunami, N; Tazawa, M, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,250 ,295-299 (2006).

 

107) Electrical conductivity increase of Al-doped ZnO films induced by high-energy-heavy ions,

Sugai, H; Matsunami, N; Fukuoka, O, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,250 ,291-294 (2006).

 

106) Sedimentation of constitutional atoms in in-pb alloy under strong gravitational field - (Experiments and simulations),

Ono, M; Kinoshita, T; Huang, XS, et al.,

JOURNAL OF THE JAPAN INSTITUTE OF METALS 70 ,6 ,511-516 (2006).

 

105) Vortex observation in Tl-based superconductors with a scanning SQUID microscopy,

Okayasu, S; Nishio, T; Ono, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 437-38, 239-241   (2006).

 

104) Alignment of grain orientation in polycrystalline-SiO2 films induced by high-energy heavy ions,

Shinde, NS; Matsunami, A; Shimura, T, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,245,1 ,231-234 (2006).

 

103) Condensation energy density in Bi-2212 superconductors,

Matsushita, T; Kiuchi, M; Haraguchi, T, et al.,

SUPERCONDUCTOR SCIENCE & TECHNOLOGY ,19 ,2 ,200-205 (2006)

 

102) Measurement of self-diffusion coefficients in Li ionic conductors by using the short-lived radiotracer of Li-8,

Jeong, SC; Katayama, I; Kawakami, H, et al.,

JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION ,26 ,5 ,472-476 (2005).

 

101) Pulse laser irradiation into superconducting MgB2 detector,

Fujiwara, D; Miki, S; Satoh, K, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,426,1716-1720   (2005).

 

100) Critical current density at low temperatures in Bi-2212 superconductor with small anisotropy,

Haraguchi, T; Imada, T; Kiuchi, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 426 ,304-308 (2005).

 

99) A comparison between B- and n-irradiation on MgB2 bulk samples,

Okayasu, S; Sataka, M; Ikeda, H, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,426,360-363 (2005).

 

98) Vortex imaging in microscopic superconductors with a scanning SQUID microscope,

Okayasu, S; Nishio, T; Hata, Y, et al.,

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY ,15 ,2 ,696-698   (2005).

 

97) Giant magnetoreistance in evaporated nanometer scale Fe/W and Co/W multilayers,

Chushkin, Y; Jergel, M; Luby, S, et al.,

APPLIED SURFACE SCIENCE   ,243   ,1-4   ,62-67   (2005).

 

96) Measurement of diffusion coefficients in solids by the short-lived radioactive beam of Li-8,

Jeong, SC; Katayama, I; Kawakami, H, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 230 ,596-600 (2005).

 

95) A multi-exciton model for the electronic sputtering of oxides,

Matsunami, N; Fukuoka, O; Shimura, T, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,230 ,507-511 (2005).

 

94) Nanoscale frictionKinetic friction of magnetic flux quanta and charge density waves,

Maeda, A; Inoue, Y; Kitano, H, et al.,

PHYSICAL REVIEW LETTERS ,94 ,7 ,077001 (2005).

 

93) Evidence for a hard gap and Wigner lattice in heavily boron-doped synthetic diamond,

Sudou, T; Ohashi, K; Sato, T, et al.,

PHYSICAL REVIEW B ,71 ,4  ,045211 (2005).

 

92) Li-8 and F-18 diffusion experiments in solids - an application of accelerated RNB,

Jeong, SC; Katayama, I; Kawakami, H, et al.,

NUCLEAR PHYSICS A ,746 ,293C-297C (2004).

 

91) Vortex glass transition in a YBa2Cu3O7-delta film with patterned pinning geometry,

Kyoso, T; Nojima, T; Okayasu, S, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,412 ,506-510   (2004).

 

90) Penetration of vortices into micro-superconductors observed with a scanning SQUID microscope,

Nishio, T; Okayasu, S; Suzuki, J, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,412 ,379-384   (2004).

 

89) Relationship between condensation energy and dimensionality of Bi-2212 superconductor,

Okamura, K; Kiuchi, M; Otabe, ES, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,412 ,416-421   (2004).

 

88) Neutron detector by using a metallic high-T-c superconductor MgB2,

Takahashi, K; Miki, S; Satoh, K, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,412 ,1597-1601   (2004).

 

87) Ion irradiation dependence of the superconducting properties of (Cu,C)Ba2Ca3Cu4O10.5-delta,

Kito, H; Iyo, A; Hirai, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,408 ,657-658   (2004).

 

86) Nanofabrication of superconducting MgB2 neutron detector,

Miki, S; Takahashi, K; Fujiwara, D, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT ,529 ,1-3 ,405-408 (2004).

 

85) Josephson plasma resonance in Bi2Sr2CaCu2O8+y with spatially dependent interlayer phase coherence,

Kameda, N; Tokunaga, M; Tamegai, T, et al.,

PHYSICAL REVIEW B  69 ,18, 180502 (2004).

 

84) The pinning property of Bi-2212 single crystals with columnar defects,

Okamura, K; Kiuchi, M; Otabe, ES, et al.,

SUPERCONDUCTOR SCIENCE & TECHNOLOGY ,17 ,2 ,S20-S24 (2004).

 

83) Simulation of radiotracer method for diffusion studies using short-lived radioactive nuclear beams,

Jeong, SC; Katayama, I; Kawakami, H, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,212 ,483-488 (2003).

 

82) Heavy-ions irradiation dependence of superconducting properties of the Cu-based (Cu,C)Ba2Ca3Cu4O11-delta,

Kito, H; Iyo, A; Hirai, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,392 ,181-184   (2003).

 

81) Design of neutron detector by using a novel superconductor MgB2,

Takahashi, KI; Satoh, K; Yotsuya, T, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,392 ,1501-1503   (2003).

 

80) Electronic excitation induced sputtering of insulating and semiconducting oxides by high energy heavy ions,

Matsunami, N; Sataka, M; Iwase, A, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,209 ,288-293 (2003).

 

79) Simulation study on the measurements of diffusion coefficients in solid materials by short-lived radiotracer beams,

Jeong, SC; Katayama, I; Kawakami, H, et al.,

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS ,42 ,7A ,4576-4583 (2003).

 

78) Pinning property of Bi-2212 single crystals with columnar defects,

Otabe, ES; Okamura, K; Wada, H, et al.,

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY ,13 ,2 ,3083-3086   (2003).

 

77) Disappearance of Bose-glass behavior in transport properties of YBa2Cu3Oy films with columnar defects,

Nojima, T; Katakura, M; Okayasu, S, et al.,

JOURNAL OF LOW TEMPERATURE PHYSICS ,131 ,5-6 ,859-863 (2003).

 

76) Heavy-ion irradiation dependence of the superconducting properties of (Cu,C)Ba2Ca3Cu4O10.5-delta,

Kito, H; Iyo, A; Crisan, AI, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,388 ,711-712   (2003).

 

75) Effects of electron irradiation on the vortex order-disorder transition in La2-xSrxCuO4 crystals,

Radzyner, Y; Shaulov, A; Yeshurun, Y, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,388 ,753-754   (2003).

 

74) Low-temperature measurement system based on a closed-cycle refrigerator,

Tsuji, M; Kawamata, S; Ishida, T, et al.,

PHYSICA B-CONDENSED MATTER ,329 ,1632-1634 (2003).

 

73) Intermixing at interfaces of KrF laser irradiated Co/W multilayers,

Majkova, E; Luby, S; Jergel, M, et al.,

APPLIED SURFACE SCIENCE ,208 ,394-398 (2003).

 

72) Defect structure of high-T-c superconductor by high-energy heavy ion irradiation,

Sasase, M; Okayasu, S; Kurata, H, et al.,

,JOURNAL OF ELECTRON MICROSCOPY ,51 ,S235-S238 (2002).

 

71) Depth-dependent and surface damages in MgAl2O4 and MgO irradiated with energetic iodine ions,

Aruga, T; Katano, Y; Ohmichi, T, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,197 ,1-2 ,94-100 (2002). PII S0168-583X(02)01359-9

 

70) Irradiation effects on MgB2 bulk samples and formation of columnar defects in high-T-c superconductor,

Okayasu, S; Sasase, M; Hojou, K, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,382 ,1 ,104-107   (2002). PII S0921-4534()2)01206-6

 

69) AC susceptibility and higher harmonics studies of heavy-ion irradiated CuBa2Ca3Cu4Oy bulk superconductor with highest irreversibility field above liquid-nitrogen temperature,

Crisan, A; Iyo, A; Kito, H, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   ,378   ,112-117   (2002). PII S0921-4534(02)01393-X.

 

68) Superconducting properties of the heavy-ions and neutron irradiated (Cu,C)Ba2Can-1CunO2n+4-delta (n-3, 4 and 5),

Kito, H; Iyo, A; Hirai, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   ,378   ,329-332   (2002). PII S0921-4534(02)01437-5

 

67) Non-universal glass scaling behavior in transport properties of YBa2Cu3Oy films with columnar defects,

Nojima, T; Katakura, M; Okayasu, S, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   ,378   ,593-597   (2002). PII S0921-4534(02)01503-4

 

66) Change in critical current density of Bi-2212 single crystals due to high-energy heavy-Ion irradiation followed by thermal annealing,

Ogikubo, K; Nakano, M; Shitamichi, T, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,378 ,368-371   (2002). PII S0921-4534(02)01447-8

 

65) Electron irradiation effects on MgB2 bulk samples,

Okayasu, S; Ikeda, H; Yoshizaki, R,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,378 ,462-465   (2002). PII S0921-4534(02)01471-5

 

64) Angular dependence of vortex states in Sr2RuO4,

Yamazaki, K; Tokunaga, M; Tamegai, T, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,378 ,537-540   (2002). PII S0921-4534(02)01491-0

 

63) Direct evidence of the anisotropic structure of vortices interacting with columnar defects in high-temperature superconductors through the analysis of Lorentz images,

Kamimura, O; Kasai, H; Akashi, T, et al.,

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN ,71 ,8 ,1840-1843 (2002).

 

62) Observation of structures of chain vortices inside anisotropic high- Tc superconductors.,

Tonomura, A; Kasai, H; Kamimura, O, et al.,

Phys Rev Lett ,88 ,23 ,237001 (2002).

 

61) Observation of structures of chain vortices inside anisotropic high-T-c superconductors,

Tonomura, A; Kasai, H; Kamimura, O, et al.,

PHYSICAL REVIEW LETTERS ,88 ,23 ,237001 (2002)

 

60) Helium-free torque magnetometer up to 10 kG at 1.5-300 K,

Tsuji, M; Yamamoto, N; Nakata, S, et al.,

IEICE TRANSACTIONS ON ELECTRONICS ,E85C ,3 ,756-758 (2002).

 

59) Lorentz microscopy observation of vortices inside Bi-2212 thin films with columnar defects,

Tonomura, A; Kasai, H; Kamimura, O, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,369 ,1-4 ,68-76   (2002). PII S0921-4534(01)01222-9

 

58) Josephson plasma resonance in half-irradiated Bi2Sr2CaCu2O8+y,

Kameda, N; Tokunaga, M; Tamegai, T, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS  367 ,1-4 ,400-403   (2002).

 

57) Vortex observations in the triangular microhole lattice on Pb film by SQUID microscope,

Ishida, T; Yoshida, M; Okayasu, S, et al.,

SUPERCONDUCTOR SCIENCE & TECHNOLOGY ,14 ,12 ,1128-1130 (2001).

 

56) Josephson plasma resonance in Bi2Sr2CaCu2O8+gamma with partially introduced columnar defects,

Tamegai, T; Kameda, N; Tokunaga, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,362 ,78-85 (2001).

 

55) Direct observation of vortex images on lead micro-hole lattice by SQUID microscope,

Ishida, T; Yoshida, M; Okuda, K, et al.,

PHYSICA C ,357 ,604-607 (2001).

 

54) Reduction of interlayer coherence around 1/3 of matching field in Bose glass phase of YBa2Cu3O7-delta with columnar defects,

Itaka, K; Yasugaki, M; Shibauchi, T, et al.,

PHYSICA C ,357 ,435-437 (2001).

 

53) Macroscopic interference of interlayer phase coherence in Bi2Sr2CaCu2O8+y with inhomogeneous columnar defects,

Kameda, N; Tokunaga, M; Tamegai, T, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,357 ,572-575   (2001).

 

52) Effect of the neutron irradiation of the high temperature superconductor (Cu,C)Ba2Can-1CunO2n+4-delta (n=3, 4 and 5),

Kito, H; Iyo, A; Tokumoto, M, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,357 ,234-236   (2001).

 

51) Vortex phase transition and correlation in partially Au-ion irradiated YBa2Cu3O7 films,

Nojima, T; Liu, JZ; Nishizaki, T, et al.,

PHYSICA C ,357 ,469-472 (2001).

 

50) Pinning properties of quenched and melt growth method-YBCO bulk samples,

Okayasu, S; Sasase, M; Kuroda, N, et al.,

PHYSICA C ,357 ,501-504 (2001).

 

49) Irradiated damage in high-T-c superconductor,

Sasase, M; Okayasu, S; Kurata, H, et al.,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,357 ,497-500   (2001).

 

48) Observation of individual vortices trapped along columnar defects in high-temperature superconductors,

Tonomura, A; Kasai, H; Kamimura, O, et al.,

NATURE ,412 ,6847 ,620-622 (2001).

 

47) Asymmetric field profile in Bose glass phase of irradiated YBa2Cu3O7-deltaLoss of interlayer coherence around 1/3 of matching field,

Itaka, K; Shibauchi, T; Yasugaki, M, et al.,

PHYSICAL REVIEW LETTERS ,86 ,22 ,5144-5147 (2001).

 

46) Weak pinning phenomena in liquid state in Bi2Sr2CaCu2O8+delta with columnar defects,

Kimura, K; Koshida, R; Okayasu, S, et al.,

PHYSICA C ,341 ,1133-1134 (2000).

 

45) Pinning property change of high-energy heavy-ion irradiated Bi-2212 single crystals due to thermal annealing after irradiation,

Ogikubo, K; Terai, T; Yamaguchi, K, et al.,

PHYSICA C   ,341   ,1149-1150   (2000).

 

44) Systematic study of Josephson plasma resonance in Bi2Sr2CaCu2O8+delta with columnar defects,

Kakeya, I; Nakamura, R; Kadowaki, K, et al.,

PHYSICA B   ,284   ,881-882   (2000).

 

43) Magnetization anomalies above the vortex lattice melting transition,

Kimura, K; Koshida, R; Okayasu, S, et al.,

PHYSICA B   ,284   ,717-718   (2000).

 

42) Effect of damage morphology on the pinning and vortex dynamics in Bi2Sr2CaCu2O8+delta irradiated with GeV heavy ions,

Kuroda, N; Ishikawa, N; Chimi, Y, et al.,

PHYSICA B   ,284   ,847-848   (2000).

 

41) Magnetization measurements on anomalous peak effect in detwinned YBCO single crystals,

Okayasu, S; Sasase, M; Asaoka, H,

PHYSICA B   ,284   ,715-716   (2000).

 

40) Amorphization behaviors in polycrystalline alumina irradiated with energetic iodine ions,

Aruga, T; Katano, Y; Ohmichi, T, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,166 ,913-919 (2000).

 

39) Effects of weak point disorder on the vortex matter phase diagram in untwinned YBa2Cu3Oy single crystals,

Nishizaki, T; Naito, T; Okayasu, S, et al.,

PHYSICAL REVIEW B   ,61   ,5   ,3649-3654   (2000).

 

38) Novel asymmetric critical state in YBa2Cu3O7-delta with columnar defects,

Itaka, K; Yasugaki, M; Shibauchi, T, et al.,

JOURNAL OF LOW TEMPERATURE PHYSICS   ,117   ,5-6   ,1369-1373   (1999).

 

37) Systematic magnetization measurements on single crystalline Bi2Sr2CaCu2O8+delta with columnar defects,

Kimura, K; Koshida, R; Kwok, WK, et al.,

JOURNAL OF LOW TEMPERATURE PHYSICS   ,117   ,5-6   ,1471-1475   (1999).

 

36) Magnetically investigated E-J characteristics of Bi-2212/Ag tape conductors,

Kumakura, H; Kitaguchi, H; Mochiku, T, et al.,

PHYSICA C   ,324   ,2   ,57-64   (1999).

 

35) Vortex dynamics in Bi2(Sr,La)(2)CuO6+delta and Bi2Sr2CaCu2O8+delta single crystals with columnar defects,

Kuroda, N; Ishikawa, N; Chimi, Y, et al.,

PHYSICA C   ,321   ,3-4   ,143-150   (1999).

 

34) The order of phase transition of reentrant line in detwinned YBCO single crystal,

Okayasu, S; Asaoka, H,

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS ,317 ,633-636   (1999).

 

33) Formation of granular-like structure of Ag Co multilayers by excimer laser irradiation,

Majkova, E; Spasova, M; Jergel, M, et al.,

THIN SOLID FILMS   ,344   ,214-217   (1999).

 

32) Association of Bcl-2 protein expression with gallbladder carcinoma differentiation and progression and its relation to apoptosis,

Mikami, T; Yanagisawa, N; Baba, H, et al.,

CANCER   ,85   ,2   ,318-325   (1999).

 

31) Vortex dynamics in Bi2+xSr2-(x+y)LayCuO6+delta and Bi2Sr2CaCu2Oy irradiated with heavy-ionscorrelation between the Bose-glass behavior and the coupling of pancake vortices,

Kuroda, N; Ishikawa, N; Okayasu, S, et al.,

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS ,146 ,1-4 ,572-576   (1998).

 

30)Reentrant properties due to the peak effect in untwinned YBCO single crystals

S.Okayasu and H.Asaoka

Advances in Superconductivity X, 549-551 (1998).

 

29)Uranium molybdenum silicid U3MoSi2 and phase equilibria in the U-Mo-Si system

M.Ugajin, A.Itoh, S.Okayasu and Y.Kazumata

J. of nuclear materials 257, 145-151 (1998).

 

28)Vortex phase diagram of YBa2Cu3Oy in high magnetic fields -Effects of weak disorder-

N.Kobayashi, T. Naito, T.Nishizaki, K.Shibata, S.Okayasu ‘Ό‚Q–Ό

Proceedings of the Physical phenomena at high magnetic fields III 380-383 (1998).

 

27)Effect of Au24+ ion irradiation on the superconductive properties and Microstructure of EuBa2Cu3Ox thin film

M.Sasase, S.Okayasu, H.Kurata and K.Hojou

Surface and Coatings Technology 103-104, 360-364 (1998).

 

26)Bi2212 films and tapes irradiated by 120 MeV oxygen ions

Y.Kazumata, S.Okayasu, H.Kumakura and K.Togano

Physica C 235-240, 2825-2826 (1994).

 

25)Defect study along Au-ion traces in Bi2Sr2CaCu2Ox single crystal

D.Huang, Y.Sasaki, S.Okayasu, T.Aruga, K.Hojou ‘Ό‚P–Ό

Phys. Rev B 57, 1-8 (1998).

 

24)Irreversibility lines of EuBa2Cu3Ox7-ƒΒ films bombarded by 230MeV Au14+ ions criterion dependence

T. Ishida, K.Okuda, Y.Kazumata, S.Okayasu, O.Michikami

Physica C 247, 206-214 (1995).

 

23)Parallel and crossed columnar defects aligned at 45‹to the c axis in Bi2Sr2CaCu2Ox tapes

Y.Kazumata, S.Okayasu, M.Sataka, H.Kumakura

Phys. Rev. B 58 5839-5847 (1998).

 

22)Reeentrant properties due to the peak effect in untwinned YBCO single crystal

S.Okayasu and H.Asaoka

Advances in Superconductivity X, 549-552 (1998).

 

21)Effect of high energy heavy-ion irradiation on the critical current density of Bi-2212 single crystal

T.Terai,Y.Ito, K.Kishio, J.Shimoyama, S.Okayasu ‘Ό‚P–Ό

Advances in Superconductivity IX, 555-558 (1997).

 

20)Effect of high energy heavy-ion irradiation on the critical current density of Bi-2212 single crystal

T.Terai,T.Kobayashi, K.Kishio, J.Shimoyama, S.Okayasu ‘Ό‚P–Ό

Physica C282-287, 2135-2136 (1997).

 

19)Xray rocking curve study of the strain profile formed by MeV ion implantation into (111) silicon wafers

M.Kuribayashi, K.Takumi, A.Inoue, H.Tanaka, (S.Okayasu) ‘Ό7–Ό

Jpn. J. Appl. Phys. 36, 7296-7301 (1997).

 

18)Proton irradiation effects on effective activation energies of QMG-YBCO

S.Okayasu and Y.Kazumata

Advances in Superconductivity IX, 507-510 (1997).

 

17)Observation of dynamic fluxline relaxation in ion-irradiated Bi2Sr2CaCu2Ox by Lorentz microscopy

K. Harada, H.Kasai, T.Matsuda, A.Tonomura, S.Okayasu ‘Ό‚P–Ό

Phys. Rev B 53 9400-9405 (1996).

 

16)Effective activation energy of 16MeV proton irradiated QMG-YBCO

S.Okayasu and Y.Kazumata

Czechoslovak J. of Physics 46, 1645-1646 (1996).

 

15)Comparative study on 180MeV Cu11+ irradiation effect on textured YBa2Cu3Ox and Bi2Sr2CaCu2Oy

H.Kumakura, T.Togano, N.Tomita, E.Yanagisawa, S.Okayasu ‘Ό‚P–Ό

Physica C251, 231-237 (1995).

 

14)YBa2Cu3Ox films irradiated by 120MeV oxygen ions

Y.Kazumata, S.Okayasu and T.Aruga

Jpn. J. Appl. Phys. 33 1012-1017 (1994).

 

13)Superconductivity of electron irradiated La1.85Sr0.15CuO4 single crystal

S.Okayasu, Y.Kazumata, I.Tanaka and H.Kojima

Trans. Mat. Res. Soc. Jpn 19A, 421-424 (1994).

 

12)Electron irradiation effects on a La1.85Sr0.15CuO4 single crystal

S.Okayasu, Y.Kazumata, I.Tanaka and H.Kojima

Physica B194-196, 1881-1882 (1994).

 

11)Spin glass behavior of Mn2+ ions in zeolite-Y at very low temperature

S.Okayasu and Y.Narahara

J. Low Temp. Physics 96, 117-130 (1994).

 

10)Harmonic and static susceptibilities of YBa2Cu3O7

T.Ishida, R.B.Goldfarb, S.Okayasu, Y.Kazumata, J.Franz‘Ό‚Q–Ό

Materials Science Forum 137-139, 103-132 (1993).

 

9)Effect of high-energy ion irradiation and electron irradiation on textured     

Bi2Sr2CaCu2Ox -180MeV Cu11+ and Br11+ irradiations and 3MeV electron irradiation

H.Kumakura, H.Kitaguchi, K.Togano, H.Maeda, (S.Okayasu) ‘Ό‚Q–Ό

J. Appl. Phys 74, 451-457 (1993).

 

8)Electron irradiation effects of YBa2Cu3Ox

Y.Kazumata, S.Okayasu and T.Kato

Physics and materials science of high temperature superconductors II 595-608 (1992).

 

7)Flux pinning characteristics in 180MeV Cu11+ irradiated Bi2Sr2CaCu2Ox

H.Kumakura, H.Kitaguchi, K.Togano, H.Maeda, (S.Okayasu) ‘Ό‚Q–Ό

Jpn. J. Appl. Phys 31, 1408-1410 (1992).

 

6)Low-temperature annealing effect on superconducting and structual

properties of ion-irradiated Bi2Sr2CaCu2Ox crystals

B.Chenevier, S.Ikeda, H.Kumakura, K.Togano, S.Okayasu ‘Ό‚P–Ό

Jpn. J. Appl. Phys 31, 512-515 (1992).

 

5)High resolution electron microscopy observation of defects in 180MeV Cu11+

ion-irradiated Bi2Sr2CaCu2O8 crystals

B.Chenevier, S.Ikeda, H.Kumakura, K.Togano, S.Okayasu ‘Ό‚P–Ό

Jpn. J. Appl. Phys 31, 777-779 (1992).

 

4)Enhancement of flux pinning in Bi2Sr2CaCu2O8 by 180MeV Cu11+ irradiation

H.Kumakura, S.Ikeda, K.Togano, H.Maeda, (S.Okayasu)‘Ό‚R–Ό

J. Appl. Phys. 72, 800-802 (1992).

 

3)The influence of electron irradiation on superconductivity of YBa2Cu3Ox

Y.Kazumata, S.Okayasu and T.Kato

Physica C185-189, 2183-2184 (1991).

 

2)Bulk critical temperature enhancement of Bi1.8Pb0.2Sr2CaCu2O8 by phenol treatment

T.Ishida, S.Okayasu and Y.Kazumata

Physica C178, 301-304 (1991).

 

1)Dc-susceptibility of Mn-zeolie Y

 S.Okayasu, K.Miyabe, K.Chahara, A.Tominaga and Y.Narahara

 Solid State Comm. 73, 593-596 (1990).

 

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