INTERNAL MAGNETIC-FIELDS AT MU+ SITES AND THE MAGNETIC PHASE-DIAGRAM OF BI2SR2Y1-XCAXCU2OY SYSTEM STUDIED BY THE MU-SR METHOD

被引：21

作者：

NISHIDA, N

OKUMA, S

MIYATAKE, H

TAMEGAI, T

IYE, Y

YOSHIZAKI, R

NISHIYAMA, K

NAGAMINE, K

KADONO, R

BREWER, JH

机构：

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

[2] UNIV TSUKUBA,INST APPL PHYS,SAKURA,IBARAKI 305,JAPAN

[3] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 1W5,BC,CANADA

[4] UNIV TOKYO,MESON SCI LAB,BUNKYO KU,TOKYO 103,JAPAN

[5] TRIUMF,VANCOUVER,BC,CANADA

来源：

PHYSICA C | 1990年 / 168卷 / 1-2期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/0921-4534(90)90099-Z

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic properties of the Bi2Sr2Y1-xCaxCu2Oy system have been studied by positive muon spin rotation or relaxation methods. The magnetic phase diagram has been obtained as a function of Ca content x and temperature T. A long-range magnetic ordering (probably antiferromagnetic) has been observed in Bi2Sr2Y1-xCaxCu2Oy with Ca content x ranging from 0.0 to about 0.3. The Néel temperature TN decreases with increasing Ca content; TN is above 300 K for x=0.0, 200-250 K for x=0.2 and drops abruptly to 10-20 K for x=0.3. Superconductivity sets in around the same Ca content (x≈0.5) where the magnetic ordering disappears completely. The magnetic phase diagram of the Bi2Sr2Y1-xCaxCu2Oy system is thus similar to that of YBa2Cu3Ox or La2-xAxCuO4-δ (A=Sr or Ba) and suggests a common origin of the superconductivity in all these oxide superconductors. The temperature dependence of the internal magnetic field at μ+ in Bi2Sr2YCu2Oy is also discussed. © 1990.

引用

页码：23 / 28

页数：6

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