Magnetism and flux pinning of Bi2.1Sr1.9Ca1(Cu1-yFey)(2)O8+x single crystals

被引：4
作者：
Gu, GD [1 ]
Russell, GJ [1 ]
Koshizuka, N [1 ]
机构：
[1] ISTEC,SRL,KOTO KU,TOKYO 135,JAPAN
来源：
PHYSICA C | 1997年 / 282卷
关键词：
D O I：
10.1016/S0921-4534(97)01168-4
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetism and flux pinning of Fe-substituted single crystals of Bi-2212 have been studied by SQUID. Fe-substitution in the single crystals violently depresses the superconducting transition temperature of the Bi-2212 crystals. The rate of Tc decreases with Fe-substitution content in the crystals is as high as 15 K/(Fe/(Cu+Fe))at.% for the as-grown crystals of Bi2.1Sr1.9Ca1(Cu1-YFeY)(2)O8+X with a nominal Fe-content from Y=0 to Y=0.01, while it is only 7.3 K/(Fe/(Cu+Fe))at.% for as-grown crystals with Fe-content from Y=0.01 to Y=0.03. A small amount of Fe-substitution (Y=0.01) increases the Jc and the flux pinning of as-grown Bi-2212 crystals. Fe-substitution is one kind of effective pinning centre in the Bi-2212 crystals. The irreversible field shifts towards lower fields with increase of Fe-substitution in the Bi-2212 crystals.
引用
收藏
页码：2107 / 2108
页数：2
相关论文
共 50 条
[31]   FLUX CREEP, PINNING POTENTIAL AND CRITICAL CURRENT-DENSITY IN BI2SR2CA1CU2OX SINGLE-CRYSTALS [J].
NAGANO, Y ;
FUJII, T ;
SHIRAFUJI, J .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1991, 30 (4A) :L568-L571
[32]   FLUX PINNING BY CATION VACANCIES IN BI2(SR,CA)3CU2O8+D [J].
NOMURA, S ;
YOSHINO, H ;
ANDO, K ;
CHIANG, YM .
PHYSICA C, 1991, 185 :2217-2218
[33]   Flux pinning by columnar defects in Bi2Sr2CaCu2O8+Y single crystals [J].
Pradhan, AK ;
Roy, SB ;
Chaddah, P ;
Kanjilal, D ;
Chen, C ;
Wanklyn, BM .
PHYSICA C, 1996, 264 (1-2) :109-119
[34]   STM/STS observations of Co impurities in Bi2.1Sr1.8Ca(Cu1-xCox)2O8+y single crystals [J].
Zhao, XR ;
Nakao, S ;
Ueno, K ;
Kinoda, G ;
Endo, T ;
Hanaguri, T ;
Kitazawa, K ;
Hasegawa, T .
PHYSICA B, 2000, 284 :1065-1066
[35]   OPTICAL STUDY OF DOMAINS IN BI2SR2CA1CU2O8-DELTA SINGLE-CRYSTALS [J].
CASTELLANOSGUZMAN, AG ;
REYES, J ;
ESCUDERO, R .
FERROELECTRICS, 1992, 128 (1-4) :137-142
[36]   Break junction measurements on Bi2Sr2Ca1Cu2O8+x single crystals: Analysis of the superconducting pairing symmetry [J].
Hancotte, H ;
Davydov, DN ;
Deltour, R ;
Jansen, AGM ;
Wyder, P .
PHYSICA C, 1997, 280 (1-2) :71-76
[37]   Evidence of enhanced pinning properties in optimally doped Bi2Sr2Ca1-xYxCu2O8+delta single crystals [J].
Villard, G ;
Pelloquin, D ;
Maignan, A ;
Wahl, A .
APPLIED PHYSICS LETTERS, 1996, 69 (10) :1480-1482
[38]   GROWTH OF SUPERCONDUCTING SINGLE-CRYSTALS OF COMPOSITION BI-SR-CA-CU=2-2-1-2 IN THE BI-SR-CA-CU-O SYSTEM [J].
REN, ZF ;
YAN, XL ;
JIANG, YD ;
GUAN, WY .
JOURNAL OF CRYSTAL GROWTH, 1988, 92 (3-4) :677-681
[39]   FABRICATION OF BI2SR2CA1CU2O8+DELTA BI2SR2ND1CU2O8+DELTA BI2SR2CA1CU2O8+DELTA JOSEPHSON-JUNCTIONS [J].
MIZUNO, K ;
SETSUNE, K .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1991, 30 (9A) :L1559-L1561
[40]   ELASTIC PROPERTIES OF BI2SR2CA1CU2O8 AND BI2SR1.5CA1.5CU2O8 [J].
LEDBETTER, H ;
KIM, S ;
TOGANO, K .
PHYSICA C, 1991, 185 :935-936
12345