Spin Glass in a Geometrically Frustrated Magnet of ZnFe{sub 2}O{sub 4} Nanoparticles
Journal Article
·
· Journal of Superconductivity and Novel Magnetism
- Zhejiang University of Technology, Research Center of Magnetic and Electronic Materials, College of Materials Science and Engineering (China)
- Chinese Academy of Sciences, High Magnetic Field Laboratory (China)
We investigated the magnetic properties of a geometrically frustrated magnet of ZnFe{sub 2}O{sub 4} nanoparticles by carrying out the comprehensive measurements of dc magnetization and ac susceptibility. Spin glass is confirmed to occur in this weakly Fe(Zn)-ionic-inversed sample. The common characteristics of spin glass including the aging, the memory, and the rejuvenation effects were observed. By using the critical-power law to study the spin dynamics, the spin-glass transition temperature T{sub g} is obtained to be 18 K and the dynamic exponent zν is 8.0. The weak exchange interaction disorder introduced by the ferrimagnetic J{sub AB} interaction, together with the weak nonmagnetic dilute disorder induced by the ionic inversion, is responsible for the formation of spin glass in the ZnFe{sub 2}O{sub 4} nanoparticles.
- OSTI ID:
- 22773652
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 11 Vol. 31; ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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