DIAMAGNETIZATION IN THE VORTEX STATE OF BI(PB) SR CA CU O - MAGNETIC-FIELD MEASUREMENT AT THE SURFACE BY NUCLEAR-MAGNETIC-RESONANCE

被引：5
作者：
MANIWA, Y
SATO, H
MITUHASHI, T
MIZOGUCHI, K
SHIOZAKI, I
KUME, K
机构：
[1] Department of Physics, Tokyo Metropolitan University, Tokyo, 158, Fukazawa, Setagaya-ku
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 4A期
关键词：
MAGNETIZATION; OXIDE SUPERCONDUCTOR; NMR; CRITICAL CURRENT DENSITY;
D O I：
10.1143/JJAP.30.L572
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Diamagnetization M of high-T(c) oxide superconductor Pb-doped Bi-Sr-Ca-Cu-O powder in the vortex state has been studied by nuclear magnetic resonance (NMR) of the surface material coated on the sample. It was found that there is no apparent anomaly in the temperature dependence of M extracted from NMR in field cooling below 1.1 T, in contrast with the result obtained by superconducting quantum interference device (SQUID) magnetometer which shows an unusually steep increase in M(T) at low temperatures. An origin of the different results produced by the two methods is discussed.
引用
收藏
页码：L572 / L575
页数：4
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