CORRELATION OF BI AND CU VALENCIES WITH STRUCTURAL MODULATION IN BI2SR2(CA1-XYX)CU2OY

被引：20

作者：

KAWANO, T ^{[1
]}

MUNAKATA, F ^{[1
]}

YAMAUCHI, H ^{[1
]}

TANAKA, S ^{[1
]}

机构：

[1] INT SUPERCOND TECHNOL CTR,SUPERCOND RES LAB,KOTO KU,TOKYO 135,JAPAN

来源：

JOURNAL OF MATERIALS RESEARCH | 1992年 / 7卷 / 02期

关键词：

D O I：

10.1557/JMR.1992.0299

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The valencies of the Bi and Cu ions in Bi2Sr2(Ca1-xYx)Cu2O, were determined separately by a coulometric titration technique. The Cu valency decreased monotonicalty from 2.16 to 2.04 with increasing Y content over the range from 0 to 1. Superconductivity occurred for Cu valency greater than 2.1. The Bi valency was also found to decrease from +3.12 to +2.99 as the Y content increased. It leveled off at approximately +3.0 for the Y content larger than 0.8. This change in the Bi valency was correlated with the change in the structural modulation period and with its transformation from an incommensurate to a commensurate state.

引用

页码：299 / 302

页数：4

共 12 条

[1]

CHEETHAM AK, 1988, NATURE, V21, P333

[2] A MODEL FOR THE SUPERSTRUCTURE OF BI2SR2CACU2O8.2 [J].

HEWAT, EA ;

CAPPONI, JJ ;

MAREZIO, M .

PHYSICA C, 1989, 157 (03) :502-508

[3] MODULATED STRUCTURE IN BI2SR2CA1-XYXCU2OY [J].

INOUE, Y ;

SHICHI, Y ;

MUNAKATA, F ;

YAMANAKA, M ;

KOYAMA, Y .

PHYSICAL REVIEW B, 1989, 40 (10) :7307-7309

[4] COULOMETRIC DETERMINATION OF THE AVERAGE VALENCIES OF COPPER AND BISMUTH IN THE SUPERCONDUCTING BISMUTH - STRONTIUM - CALCIUM - COPPER - OXYGEN SYSTEM [J].

KURUSU, K ;

TAKAMI, H ;

SHINTOMI, K .

ANALYST, 1989, 114 (10) :1341-1343

[5] A NEW HIGH-TC OXIDE SUPERCONDUCTOR WITHOUT A RARE-EARTH ELEMENT [J].

MAEDA, H ;

TANAKA, Y ;

FUKUTOMI, M ;

ASANO, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (02) :L209-L210

[6] POSSIBLE MODEL OF THE MODULATED STRUCTURE IN HIGH-TC SUPERCONDUCTOR IN A BI-SR-CA-CU-O SYSTEM REVEALED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY [J].

MATSUI, Y ;

MAEDA, H ;

TANAKA, Y ;

HORIUCHI, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (03) :L372-L375

[7] NEUTRON-DIFFRACTION STUDY OF TL2BA2CUO6+DELTA WITH VARIOUS TCS FROM 0 TO 73-K [J].

SHIMAKAWA, Y ;

KUBO, Y ;

MANAKO, T ;

IGARASHI, H ;

IZUMI, F ;

ASANO, H .

PHYSICAL REVIEW B, 1990, 42 (16) :10165-10171

[8] METAL-INSULATOR-TRANSITION IN THE BI2SR2CA1-XYXCU2O8+Y SYSTEM [J].

TAMEGAI, T ;

KOGA, K ;

SUZUKI, K ;

ICHIHARA, M ;

SAKAI, F ;

IYE, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1989, 28 (01) :L112-L115

[9] BROADER PERSPECTIVE ON THE HIGH-TEMPERATURE SUPERCONDUCTING YBA2CU3OY SYSTEM - THE REAL ROLE OF THE OXYGEN-CONTENT [J].

TOKURA, Y ;

TORRANCE, JB ;

HUANG, TC ;

NAZZAL, AI .

PHYSICAL REVIEW B, 1988, 38 (10) :7156-7159

[10] STRUCTURAL AND ELECTRONIC ROLE OF LEAD IN (PBBI)2SR2CACU2O8 SUPERCONDUCTORS BY STM [J].

WU, XL ;

ZHANG, Z ;

WANG, YL ;

LIEBER, CM .

SCIENCE, 1990, 248 (4960) :1211-1214

← 1 2 →