Magnetization measurement of YBa2Cu3Oy in high magnetic fields up to 30 T

被引：5

作者：

Kobayashi, N ^{[1
]}

Nishizaki, T ^{[1
]}

Naito, T ^{[1
]}

Awaji, S ^{[1
]}

Watanabe, K ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 98077, Japan

来源：

PHYSICA B | 1998年 / 246卷

关键词：

YBa2Cu3Oy; magnetization; vortex lattice melting transition; vortex phase diagram;

D O I：

10.1016/S0921-4526(97)00954-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetization measurements on high-quality untwinned YBa2Cu3Oy single crystals are performed in magnetic fields up to 30 T using a Hall probe magnetometry. We find an anomalous second peak in the magnetization hysteresis curve, which is different from the previously reported "fish tail". This behavior is interpreted in terms of the field-driven transition from the vortex lattice or the Bragg glass to the disordered vortex glass phases with increasing magnetic field. We discuss, furthermore, the influence of disorder of the system on the transition. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：433 / 436

页数：4

共 11 条

[1] Irreversibility, mechanical entanglement and thermal melting in superconducting vortex crystals with point impurities [J].

Ertas, D ;

Nelson, DR .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1996, 272 (1-2) :79-86

[2] Phase diagrams of flux lattices with disorder [J].

Giamarchi, T ;

LeDoussal, P .

PHYSICAL REVIEW B, 1997, 55 (10) :6577-6583

[3] ELASTIC THEORY OF PINNED FLUX LATTICES [J].

GIAMARCHI, T ;

LEDOUSSAL, P .

PHYSICAL REVIEW LETTERS, 1994, 72 (10) :1530-1533

[4] Superconducting ordering in vortex states of clean type II superconductors with pinnings [J].

Ikeda, R .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (12) :3998-4017

[5] PEAK EFFECT AND SCALING OF IRREVERSIBLE PROPERTIES IN UNTWINNED Y-BA-CU-O CRYSTALS [J].

KLEIN, L ;

YACOBY, ER ;

YESHURUN, Y ;

ERB, A ;

MULLERVOGT, G ;

BREIT, V ;

WUHL, H .

PHYSICAL REVIEW B, 1994, 49 (06) :4403-4406

[6] ANISOTROPIC PROPERTIES OF THE ANOMALOUS 2ND PEAK IN THE MAGNETIZATION CURVES AND THE IRREVERSIBILITY FIELD OF YBA2CU3OY (6.6-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-6.9) SINGLE-CRYSTALS [J].

KOBAYASHI, N ;

HIRANO, K ;

NISHIZAKI, T ;

IWASAKI, H ;

SASAKI, T ;

AWAJI, S ;

WATANABE, K ;

ASAOKA, H ;

TAKEI, H .

PHYSICA C, 1995, 251 (3-4) :255-262

[7] EXPERIMENTAL-EVIDENCE FOR VORTEX-GLASS SUPERCONDUCTIVITY IN Y-BA-CU-O [J].

KOCH, RH ;

FOGLIETTI, V ;

GALLAGHER, WJ ;

KOREN, G ;

GUPTA, A ;

FISHER, MPA .

PHYSICAL REVIEW LETTERS, 1989, 63 (14) :1511-1514

[8] Discontinuity of reversible magnetization in untwinned YBCO single crystals at the first order vortex melting transition [J].

Liang, RX ;

Bonn, DA ;

Hardy, WN .

PHYSICAL REVIEW LETTERS, 1996, 76 (05) :835-838

[9]

NAITO T, 1996, IN PRESS P 9 INT S S

[10] Anomalous magnetization due to the vortex lattice melting transition in YBa2Cu3Oy [J].

Nishizaki, T ;

Onodera, Y ;

Naito, T ;

Kobayashi, N .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1996, 105 (5-6) :1183-1188

← 1 2 →