Exchange bias and antiferromagnetic interfacial exchange coupling in the mixed-spin oxide Li2/7Ni5/7O

We present a detailed study on magnetic properties of mixed spin oxide Li2/7Ni5/7O, where small ferromagnetic (FM) clusters (with averaged diameter of ∼18 Å) immersed with an antiferromagnetic (AFM) host. The exchange bias (EB) with shifts of the hysteresis loop along both the field and magnetizatio...

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Bibliographic Details
Published in:Journal of applied physics 2014-01, Vol.115 (4)
Main Authors: Shi, C. X., Ren, W. J., Liu, W., Zhang, Z. D.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Bias
Clusters
Coupling
Ferromagnetism
Hysteresis loops
Magnetic properties
Magnetism
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Summary:We present a detailed study on magnetic properties of mixed spin oxide Li2/7Ni5/7O, where small ferromagnetic (FM) clusters (with averaged diameter of ∼18 Å) immersed with an antiferromagnetic (AFM) host. The exchange bias (EB) with shifts of the hysteresis loop along both the field and magnetization axes is found, which is due to the interfacial interaction between the FM clusters and the AFM host. An AFM interfacial exchange coupling is deduced from the exchange interactions between Ni ions. The type and strength of this interfacial exchange interaction are discussed in terms of the EB at low temperature.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4863313