Long-range magnetic order of the Er ions in Er2Ba4Cu7O14.92

被引：2

作者：

Bottger, G

Fischer, P

Donni, A

Berastegui, P

Aoki, Y

Sato, H

Fauth, F

机构：

[1] PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND

[2] NATL RES INST MET, TSUKUBA, IBARAKI 305, JAPAN

[3] RUTHERFORD APPLETON LAB, ISIS FACIL, DIDCOT OX11 0QX, OXON, ENGLAND

[4] TOKYO METROPOLITAN UNIV, FAC SCI,DEPT PHYS, HACHIOJI, TOKYO 19203, JAPAN

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.55.R12005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neutron-diffraction investigations at temperatures down to 25 mK were performed for the high-temperature superconductor Er2Ba4Cu7O14.92 (Er-247), T-c=89 K on a polycrystalline sample prepared by a sol-gel technique. Below T-N=0.54 K, a three-dimensional antiferromagnetic ordering of the Er ions corresponding to a propagation vector k=(1/2,0,0) and a finite correlation length of about 130 Angstrom along the c axis have been found. The magnetic Er moments are oriented parallel to the b axis. This work proves that Er-247 shows a long-range magnetic ordering.

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页码：12005 / 12007

页数：3

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