EFFECT OF THERMAL HISTORY ON THE TRANSPORT-PROPERTIES AND THE LOCATION OF FE IN YBA2CU3O7 THIN-FILMS

被引：8

作者：

BRIDGES, F ^{[1
]}

BOYCE, JB ^{[1
]}

JOHNSON, RI ^{[1
]}

机构：

[1] XEROX CORP,PALO ALTO RES CTR,PALO ALTO,CA 94304

来源：

APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 24期

关键词：

D O I：

10.1063/1.106777

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Epitaxial Fe-substituted YBa2Cu3O7 films on LaAlO3 substrates prepared by pulsed-laser deposition exhibit a large variation in T(c) with changes in the cooldown rate of the films in an O2 environment immediately after deposition. A rapid cooldown rate (200-degrees-C/min) yields surprisingly high-T(c) films with T(c)>75 K for 13% of the Cu replaced by Fe, while a slow cooldown of 10-degrees-C/min results in low-T(c) films with T(c) --> 0 at 11 % Fe, a greater suppression than reported for bulk materials. In addition, post-deposition anneals in O2 affect T(c) significantly, even for anneal temperatures as low as 370-degrees-C. These results are interpreted in terms of isolated- and clustered-Fe atoms substituted on the Cu chains sites.

引用

页码：3042 / 3044

页数：3

共 18 条

[1]

BOYCE JB, 1990, SPIE P, V1187, P136

[2] DISTORTED CHAIN SITES FOR CO-SUBSTITUTED AND FE-SUBSTITUTED YBA2CU3O7-DELTA [J].

BRIDGES, F ;

BOYCE, JB ;

CLAESON, T ;

GEBALLE, TH ;

TARASCON, JM .

PHYSICAL REVIEW B, 1989, 39 (16) :11603-11617

[3] LOCAL-STRUCTURE ABOUT NI ATOMS IN NI-SUBSTITUTED YBA2CU3O7-DELTA [J].

BRIDGES, F ;

BOYCE, JB ;

CLAESON, T ;

GEBALLE, TH ;

TARASCON, JM .

PHYSICAL REVIEW B, 1990, 42 (04) :2137-2142

[4]

BRIDGES F, 1990, MATER RES SOC SYMP P, V191, P159, DOI 10.1557/PROC-191-159

[5]

BRIDGES F, IN PRESS P SPIE

[6] PREPARATION OF THE ORTHORHOMBIC YBA2(CU1-XFEX)3OY IN THE WIDE COMPOSITION RANGE OF X AND ITS SUPERCONDUCTING PROPERTIES [J].

KATSUYAMA, S ;

UEDA, Y ;

KOSUGE, K .

MATERIALS RESEARCH BULLETIN, 1989, 24 (05) :603-610

[7] EFFECTS OF CU SUBSTITUTION BY FE ON THE MAGNETIC-PROPERTIES OF YBA2CU3O7-Y SINGLE-CRYSTALS [J].

LAN, MD ;

LIU, JZ ;

SHELTON, RN .

PHYSICAL REVIEW B, 1991, 43 (16) :12989-12993

[8] SUPERCONDUCTIVITY IN IMPURITY-INDUCED TETRAGONAL YBA2(CU1-XFEX)3O7-DELTA [J].

MAENO, Y ;

KATO, M ;

AOKI, Y ;

FUJITA, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1987, 26 (12) :L1982-L1984

[9] SUBSTITUTION FOR COPPER IN A HIGH-TC SUPERCONDUCTOR YBA2CU3O7-DELTA [J].

MAENO, Y ;

TOMITA, T ;

KYOGOKU, M ;

AWAJI, S ;

AOKI, Y ;

HOSHINO, K ;

MINAMI, A ;

FUJITA, T .

NATURE, 1987, 328 (6130) :512-514

[10] PROPERTIES OF REDUCED THEN REOXIDIZED YBA2(CU1-XFEX)3CUO7-DELTA [J].

MOODENBAUGH, AR ;

YANG, CY ;

ZHU, YM ;

SABATINI, RL ;

FISCHER, DA ;

XU, YW ;

SUENAGA, M .

PHYSICAL REVIEW B, 1991, 44 (13) :6991-6998

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