SUPERCONDUCTIVITY AND MAGNETISM OF BI2SR2CACU2OX - EFFECT OF QUENCHING AND PULVERIZATION

被引：23

作者：

ISHIDA, T

KOGA, K

NAKAMURA, S

IYE, Y

KANODA, K

OKUI, S

TAKAHASHI, T

OASHI, T

KUMAGAI, K

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

[2] GAKUSHUIN UNIV,DEPT PHYS,TOSHIMA KU,TOKYO 171,JAPAN

[3] HOKKAIDO UNIV,DEPT PHYS,SAPPORO,HOKKAIDO 060,JAPAN

来源：

PHYSICA C | 1991年 / 176卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90690-Z

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of quenching on Bi2Sr2CaCu2O(x) (BSCCO) has been investigated. Quenching enhances the critical temperature T(c). The hole concentration n(h) (approximately 5 x 10(21) cm-3) decreases as the quenching temperature T(q) increases. The normal-state static susceptibility chi-DC (approximately 5 x 10(-7) emu/g) of the BSCCO pellet is almost independent of temperature but its magnitude decreases with the increase of T(q). Thermogravimetry (TG) analysis shows that the change in the oxygen content is very small when the sample is heated. The Cu nuclear quadrupole resonance (NQR) spectra are very broad. In addition, we have observed a large Curie-Weiss term in chi-DC and chi-ESR of powdered samples. From the Curie constant, the number of localized Cu2+ spins is estimated to reach 30% of total Cu atoms. This component almost disappears by re-annealing. In all cases, chi-ESR has almost the same magnitude as chi-DC, in marked contrast with YBa2Cu3O7-delta. The origin of the normal-state susceptibility is discussed.

引用

页码：24 / 34

页数：11

共 44 条

[1] SUPERCONDUCTIVITY IN THE BI-SR-CU-O SYSTEM [J].

AKIMITSU, J ;

YAMAZAKI, A ;

SAWA, H ;

FUJIKI, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1987, 26 (12) :L2080-L2081

[2] LINEAR MAGNETIC CHAINS WITH ANISOTROPIC COUPLING [J].

BONNER, JC ;

FISHER, ME .

PHYSICAL REVIEW, 1964, 135 (3A) :A640-+

[3] SURFACE STUDY OF THE 83-K SUPERCONDUCTOR BI2SR2CACU2O8 BY LOW-ENERGY ELECTRON-DIFFRACTION AND ANGLE-RESOLVED INVERSE PHOTOEMISSION SPECTROSCOPY [J].

CLAESSEN, R ;

MANZKE, R ;

CARSTENSEN, H ;

BURANDT, B ;

BUSLAPS, T ;

SKIBOWSKI, M ;

FINK, J .

PHYSICAL REVIEW B, 1989, 39 (10) :7316-7319

[4] EVIDENCE FROM MECHANICAL MEASUREMENTS FOR FLUX-LATTICE MELTING IN SINGLE-CRYSTAL YBA2CU3O7 AND BI2.2SR2CA0.8CU2O8 [J].

GAMMEL, PL ;

SCHNEEMEYER, LF ;

WASZCZAK, JV ;

BISHOP, DJ .

PHYSICAL REVIEW LETTERS, 1988, 61 (14) :1666-1669

[5] THE INCOMMENSURATE MODULATION OF THE 2212 BI-SR-CA-CU-O SUPERCONDUCTOR [J].

GAO, Y ;

LEE, P ;

COPPENS, P ;

SUBRAMANIAN, MA ;

SLEIGHT, AW .

SCIENCE, 1988, 241 (4868) :954-956

[6] HOLE CONCENTRATION AND TC IN BI2SR2CACU2O8+DELTA [J].

GROEN, WA ;

DELEEUW, DM ;

FEINER, LF .

PHYSICA C, 1990, 165 (01) :55-61

[7] NQR CHARACTERIZATION OF BI2SR2CAN-1CUNO4+2N MATERIALS [J].

GUIDI, G ;

BUCCI, C ;

CARRETTA, P ;

DERENZI, R ;

TEDESCHI, R ;

CALESTANI, G ;

VIGNALI, C .

PHYSICA C, 1989, 162 :189-190

[8] CHARACTERISTICS OF HOLES INVESTIGATED BY ESR IN HIGH-TC PHASE OF BI(PB)-SR-CA-CU-O SYSTEM [J].

HAYASHI, Y ;

FUKUI, M ;

SASAKURA, H ;

MINAMIGAWA, S ;

FUJITA, T ;

NAKAHIGASHI, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1989, 28 (05) :L759-L761

[9] OXYGEN NONSTOICHIOMETRY AND VALENCES OF BISMUTH AND COPPER IN BI2.00SR1.88CA1.00CU2.14OY [J].

IDEMOTO, Y ;

FUEKI, K .

PHYSICA C, 1990, 168 (1-2) :167-172

[10] PHASES AND THEIR RELATIONS IN THE BI-SR-CU-O SYSTEM [J].

IKEDA, Y ;

ITO, H ;

SHIMOMURA, S ;

OUE, Y ;

INABA, K ;

HIROI, Z ;

TAKANO, M .

PHYSICA C, 1989, 159 (1-2) :93-104

← 1 2 3 4 5 →