A COMPARATIVE COMPOSITIONAL STUDY OF LN2-XMXCUO4-Y ELECTRON-DOPED SUPERCONDUCTORS

被引：28

作者：

AYOUB, NY

MARKERT, JT

EARLY, EA

SEAMAN, CL

PAULIUS, LM

MAPLE, MB

机构：

[1] UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92093

[2] UNIV CALIF SAN DIEGO,INST PURE & APPL PHYS SCI,LA JOLLA,CA 92093

来源：

PHYSICA C | 1990年 / 165卷 / 5-6期

关键词：

D O I：

10.1016/0921-4534(90)90383-P

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present the results of temperature-dependent magnetization and electrical resistivity measurements for a systematic series of compositions and concentrations of the electron-doped copper-oxide superconducting compounds Ln2-xMxCuO4-y (Ln = Pr, Nd, Sm, Eu; M = Ce, Th). The concentration dependences of normal and superconducting properties for both the Ce- and Th- doped systems are nearly identical, indicating that the Ce dopant ions exhibit simple tetravalent behavior. A number of distinct measures of superconducting properties display similar sharply-peaked concentration dependences; such variation is discussed in terms of phase homogeneity. © 1990.

引用

页码：469 / 474

页数：6

共 42 条

[1] EFFECT OF CE DOPING ON THE CU CHARGE IN THE ELECTRON SUPERCONDUCTOR ND2-XCEXCUO4
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[2] DEPRESSION OF THE WEAK-FERROMAGNETISM OF CUO2 PLANES IN GD2CUO4 THROUGH CE AND TH DOPING
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[3] SINGLE-PHASE 60-K BULK SUPERCONDUCTOR IN ANNEALED BA2YCU3O7-DELTA(0.3-LESS-THAN-DELTA-LESS-THAN-0.4) WITH CORRELATED OXYGEN VACANCIES IN THE CU-O CHAINS
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[4] DALICHAOUCH Y, IN PRESS
[5] SM1.85TH0.15CUO4-Y - A NEW ELECTRON-DOPED COPPER-OXIDE SUPERCONDUCTOR
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AYOUB, NY
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MARKERT, JT
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[6] FUJIMORI A, UNPUB PHYS REV B
[7] ELECTRONIC-STRUCTURE OF ND2CUO4-YFY AND ND2-XCEXCUO4-DELTA STUDIED BY PHOTOEMISSION SPECTROSCOPY
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SCHLOTTERER, J
STROBEL, J
KLAUDA, M
JOHNSON, RL
SAEMANNISCHENKO, G
[J]. PHYSICA C, 1989, 162 : 1383 - 1384
[8] GROWTH AND ANISOTROPIC SUPERCONDUCTING PROPERTIES OF ND2-XCEXCUO4-Y SINGLE-CRYSTALS
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SUZUKI, M
[J]. NATURE, 1989, 338 (6217) : 635 - 637
[9] STRUCTURAL ANOMALIES IN ND2-XCEXCUO4-Y - EVIDENCE FOR MIXED-VALENCE AND CHARGE-TRANSFER
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XUE, YY
SUN, YY
TAO, YC
HUANG, ZJ
RABALAIS, W
CHU, CW
[J]. PHYSICA C, 1989, 159 (05): : 629 - 633
[10] DETERMINATION OF THE AVERAGE IONIC RADIUS AND EFFECTIVE VALENCE OF CE IN THE ND2-XCEXCUO4 ELECTRON SUPERCONDUCTOR SYSTEM BY X-RAY-DIFFRACTION
HUANG, TC
MORAN, E
NAZZAL, AI
TORRANCE, JB
WANG, PW
[J]. PHYSICA C, 1989, 159 (05): : 625 - 628

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