Observation of spin glass transition in spinel LiCoMnO sub(4)

Spinel LiCoMnO sub(4) is prepared by solid-state reaction and its magnetic properties are comprehensively studied by direct current (DC) and alternating current (AC) susceptibilities, isothermal remanent magnetizations, and magnetic hysteresis. Fitting to the Curie-Weiss law by using high-temperatur...

Full description

Saved in:
Bibliographic Details
Published in:Chinese physics B 2015-12, Vol.24 (12)
Main Authors: Chen, Hong, Yang, Xu, Zhang, Pei-Song, Liang, Lei, Hong, Yuan-Ze, Wei, Ying-Jin, Chen, Gang, Du, Fei, Wang, Chun-Zhong
Format: Article
Language:English
Subjects:
Alternating current
Direct current
Fittings
Magnetic fields
Magnetic permeability
Magnetic properties
Spin glass
Spinel
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Spinel LiCoMnO sub(4) is prepared by solid-state reaction and its magnetic properties are comprehensively studied by direct current (DC) and alternating current (AC) susceptibilities, isothermal remanent magnetizations, and magnetic hysteresis. Fitting to the Curie-Weiss law by using high-temperature zero-field-cooled susceptibility confirms a low-spin state of Co super(3+) with S= 0. Both the fitting parameters first increase and then tend to be saturated at high magnetic fields through using isothermal remanent magnetizations, which suggests a spin glass transition at low temperature. AC susceptibility study also supports this conclusion since the frequency dependence of peak position and intensity follows the tendency of a spin glass transition. The origin of the spin-glass transition in LiCoMnO sub(4) might be attributed to a spatial segregation between non-magnetic Co super(3+) regions and spin glass ordered regions of Mn super(4+) ions.
ISSN:1674-1056
1741-4199
DOI:10.1088/1674-1056/24/12/127501