LA-139-NQR STUDY OF MAGNETIC PHASE-DIAGRAM OF LA2-XBAXCUO4

被引：19

作者：

WATANABE, I

KUMAGAI, K

NAKAMURA, Y

NAKAJIMA, H

机构：

[1] Department of Physics, Faculty of Science, Hokkaido University

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 06期

关键词：

antiferromagnetic order; La2-xBaxCuO4; magnetic phase diagram; NQR;

D O I：

10.1143/JPSJ.59.1932

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observed the temperature and the x-dependence of the 139La-NQR spectra in magnetically ordered La2-xBaxCuO4. The internal field at La nuclei increases discontinuously at Tc *, where the nuclear relaxation rate is enhanced and shows its peak. This indicates that a successive magnetic transition occurs at Tc * for x < 0.02. An asymmetry parameter of the electric quadrupole interaction changes anomalously at the magnetic transition. The magnetic phase diagram of the La-system is discussed. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

引用

页码：1932 / 1935

页数：4

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