Frustration effects in the spinel oxide Ge(Fe sub(1-x)Co sub(x)) sub(2)O sub(4)

We studied magnetic properties of Ge-based spinel oxides Ge(Fe sub(1-x)Co sub(x)) sub(2)O sub(4) to verify the frustration effect. We discovered that the spin-glass-like behavior in Ge(Fe sub(1-x)Co sub(x)) sub(2)O sub(4) exists in 0 [< or =] x [< or =] 0.9, and coexists with the antiferromagn...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2012-01, Vol.391, p.1-4
Main Authors: Matsuda, Takahiro, Agata, Ryotaro, Watanabe, Tadataka, Umeyama, Norio, Hara, Sigeo, Tokumoto, Madoka, Hata, Yoshiaki, Yasuoka, Hiroshi, Ikeda, Shin-Ichi
Format: Article
Language:English
Subjects:
Antiferromagnetism
Cobalt
Freezing
Frustration
Iron
Magnetic properties
Oxides
Spinel
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We studied magnetic properties of Ge-based spinel oxides Ge(Fe sub(1-x)Co sub(x)) sub(2)O sub(4) to verify the frustration effect. We discovered that the spin-glass-like behavior in Ge(Fe sub(1-x)Co sub(x)) sub(2)O sub(4) exists in 0 [< or =] x [< or =] 0.9, and coexists with the antiferromagnetic order in 0.1 [< or =] x [< or =] 0.9. Taking into account the coexistence of spin molecular excitations (frustration effect) and antiferromagnetic order in GeCo sub(2)O sub(4) (x= 1), the spin-glass-like behavior coexisting with the antiferromagnetic order in Ge(Fe sub(1-x)Co sub(x)) sub(2)O sub(4) might be attributed to the freezing of the spin molecules by the substitution of Fe for Co.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/391/1/012098