Magnetic properties and long-range magnetic order of Er3+ in Er2Ba4Cu7O14.92

被引：4

作者：

Bottger, G ^{[1
]}

Fischer, P

Donni, A

Aoki, Y

Sato, H

Berastegui, P

机构：

[1] Swiss Fed Inst Technol, Lab Neutronenstreuung, CH-5232 Villigen, Switzerland

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[3] Natl Res Inst Met, Tsukuba, Ibaraki 305, Japan

[4] Tokyo Metropolitan Univ, Fac Sci, Dept Phys, Hachioji, Tokyo 19203, Japan

[5] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷

关键词：

magnetic ordering; long range; superconductors; high-T-c; neutron diffraction; specific heat; low temperature;

D O I：

10.1016/S0304-8853(97)00699-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic ordering of the Er ions in the high-temperature superconductor Er2Ba4Cu7O14.92 (T-c = 89 K) has been studied by low temperature heat capacity measurements and by neutron diffraction. A sharp peak in the specific heat at T-N = 0.54 K can be described by an anisotropic two-dimensional (2D) Ising model. By neutron diffraction we observed a quasi three-dimensional (3D) antiferromagnetic order of the Er ions. The magnetic Er moments are oriented parallel to the b-axis. This work proves that Er-247 is the first compound in the 247 system showing a long-range magnetic ordering. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：517 / 518

页数：2

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