Spin Glass in a Geometrically Frustrated Magnet of ZnFe2O4 Nanoparticles

被引：6

作者：

Ying, Yao ^{[1
]}

Wang, Lichao ^{[1
]}

Li, Wangchang ^{[1
]}

Qiao, Liang ^{[1
]}

Zheng, Jingwu ^{[1
]}

Yu, Jing ^{[1
]}

Cai, Wei ^{[1
]}

Jiang, Liqiang ^{[1
]}

Che, Shenglei ^{[1
]}

Zhang, Lei ^{[2
]}

Ling, Langsheng ^{[2
]}

机构：

[1] Zhejiang Univ Technol, Coll Mat Sci & Engn, Res Ctr Magnet & Elect Mat, Hangzhou 310014, Zhejiang, Peoples R China

[2] Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2018年 / 31卷 / 11期

关键词：

Geometrically frustrated magnet; Nanoparticles; Spin glass; CATALYTIC-PROPERTIES; COMBUSTION SYNTHESIS; BEHAVIOR; DYNAMICS; EQUILIBRIUM; TRANSITION; FULCHER; FERRITE;

D O I：

10.1007/s10948-018-4626-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the magnetic properties of a geometrically frustrated magnet of ZnFe2O4 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-g is obtained to be 18 K and the dynamic exponent z is 8.0. The weak exchange interaction disorder introduced by the ferrimagnetic J(AB) interaction, together with the weak nonmagnetic dilute disorder induced by the ionic inversion, is responsible for the formation of spin glass in the ZnFe2O4 nanoparticles.

引用

页码：3553 / 3558

页数：6

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