Interfacial Tm3+ moment-driven anomalous Hall effect in Pt/Tm3Fe5O12 heterostructure

被引：1

作者：

Liu, Yu Kuai ^{[1
,2
]}

Wong, Hon Fai ^{[2
]}

Ng, Sheung Mei ^{[2
]}

Mak, Chee Leung ^{[2
]}

Leung, Chi Wah ^{[2
]}

机构：

[1] Zhaoqing Univ, Coll Elect Informat & Mechatron Engn, Zhaoqing Rd, Zhaoqing 526061, Guangdong, Peoples R China

[2] Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Hong Kong, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 501卷

基金：

中国国家自然科学基金;

关键词：

MAGNETIC-PROPERTIES; TEMPERATURE-DEPENDENCE; DIFFRACTION; INSULATOR; GARNETS;

D O I：

10.1016/j.jmmm.2020.166454

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We performed anomalous Hall effect (AHE) measurements in Pt/Tm3Fe5O12 (Pt/TmIG) bilayers grown on (1 1 0) and (1 1 1)-oriented Gd3Ga5O12 (GGG) substrates (Pt/110TmIG and Pt/111TmIG). Qualitative differences were observed in the two sets of samples: at low magnetic fields only Pt/111TmIG displays square AHE loop, while Pt/110TmIG exhibits non-hysteretic AHE behavior. Systematic temperature-dependent AHE measurements in Pt/111TmIG showed double switching events of AHE loops below 30 K, which was attributed to the larger moment of Tm3+ sublattice at low temperatures and was consistent with earlier theoretical calculations [A. Lehmann-Szweykowska et al., Phys. Rev. B 37, 459 (1988)]. Our results confirmed the strong coupling of Tm3+ magnetic moment with the lattice and the crucial role of the interfacial structure, suggesting a way to detect rare earth moment switching in iron garnets by electrical measurements.

引用

页数：5

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