Possible ferrimagnetic ordering in YBaCo4O7+δ single-crystals at low temperatures

被引：6

作者：

Izquierdo, J. L. ^{[1
]}

Montoya, J. F. ^{[1
]}

Gomez, A. ^{[1
]}

Arnache, O. ^{[2
]}

Wolf, T. ^{[3
]}

Moran, O. ^{[1
]}

机构：

[1] Univ Nacl Colombia, Lab Mat Ceram & Vitreos, Dept Fis, Medellin 568, Colombia

[2] Univ Antioquia, Grp Estado Solido, Dept Fis, Medellin 1226, Colombia

[3] Karlsruhe Inst Technol, Inst Festkorperphys, Karlsruhe, Germany

来源：

SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 39-40期

关键词：

Magnetically ordered materials; Crystal growth; Spin dynamics; T-C; COBALTITE; SERIES; OXIDES;

D O I：

10.1016/j.ssc.2010.07.007

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Single-crystals of the novel mixed valent cobaltite YBaCo4O7+delta have been synthesized. Careful magnetization measurements gave evidence of a ferrimagnetic phase with a T-C approximate to 50 K and a large coercive field of similar to 1 Tat 5 K. As no substitution of a divalent cation for yttrium was realized, it is possible that the Co2+/Co-3 ratio to be modified only by the presence of extra oxygen atoms in the tetrahedral network. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1951 / 1954

页数：4

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