Tunable magnetic orders in UAu1-xSb2

doi:10.1088/1674-1056/28/1/017102

Abstract

Two nonstoichiometric UAu_1-xSb₂ (x=0.25, 0.1) single crystals are successfully synthesized using a flux method, and their physical properties are comprehensively studied by measuring the dc-magnetization and electrical resistivity. Evidence for at least three magnetic phases is found in these samples. In zero field, both samples undergo an antiferromagnetic transition at a relatively high temperature, and with further cooling they pass through another antiferromagnetic phase, before reaching a ferromagnetic ground state. Furthermore, the magnetic order can be tuned by varying the site occupation of Au. Such a tunable magnetic order may provide an opportunity for exploring the potential quantum critical behavior in this system.

Keywords: tunable magnetic order metamagenetic transitions UAu_1-xSb₂

Received: 04 September 2018
Revised: 07 November 2018
Accepted manuscript online:

PACS:	75.30.Mb	(Valence fluctuation, Kondo lattice, and heavy-fermion phenomena)
	75.20.Hr	(Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions)
	71.27.+a	(Strongly correlated electron systems; heavy fermions)

Fund:

Project supported by the National Natural Science Foundation of China (Grant Nos. 11874330, 11504342, 11504341, and U1630248), the National Key R&D Program of China (Grant No. 2017YFA0303104), and the Science Challenge Project, China (Grant No. TZ2016004).

Corresponding Authors: Xin-Chun Lai
E-mail: laixinchun@caep.cn

Cite this article:

Wen Zhang(张文), Qiu-Yun Chen(陈秋云), Dong-Hua Xie(谢东华), Yi Liu(刘毅), Shi-Yong Tan(谭世勇), Wei Feng(冯卫), Xie-Gang Zhu(朱燮刚), Qun-Qing Hao(郝群庆), Yun Zhang(张云), Li-Zhu Luo(罗丽珠), Xin-Chun Lai(赖新春) Tunable magnetic orders in UAu_1-xSb₂ 2019 Chin. Phys. B 28 017102

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Tunable magnetic orders in UAu_1-xSb₂