Incommensurate spin density wave and magnetocaloric effect in the metallic triangular lattice HoAl2Ge2 br

doi:10.1103/PhysRevB.106.134426

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	Incommensurate spin density wave and magnetocaloric effect in the metallic triangular lattice HoAl2Ge2 br
	Gao, Fei 1,2; Sheng, Jieming 3,4; Ren, Weijun 1,2; Zhang, Qiang 5; Luo, Xiaohua 6; Qi, Ji 1,2; Cong, Mengru 1,2; Li, Bing 1,2; Wu, Liusuo 4,7; Zhang, Zhidong 1,2
通讯作者	Sheng, Jieming(shengjm@sustech.edu.cn)
	2022-10-21
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
卷号	106 期号:13 页码:8
摘要	We report the magnetic structure and the magnetocaloric effect (MCE) of the ternary compound HoAl2Ge2 with a trigonal CaAl2Si2-type crystal structure. A neutron powder diffraction experiment reveals that HoAl2Ge2 exhibits an incommensurate spin density wave (SDW) with a propagation vector k = (0.23, 0, 0.06). The special arrangement of magnetic moments in HoAl2Ge2 induces interesting physical phenomena and large magnetocaloric effects. The rise in resistivity at low temperatures indicates the effect of the SDW state in the electronic transport. The maximum magnetic-entropy change is -16.1 J/kg K under a magnetic field change of 0-70 kOe for an isotropic HoAl2Ge2 powder and it increases to -17.9 J/kg K for a single crystal when the magnetic field (H) is applied parallel to the ab plane. A large rotating magnetic-entropy change of -5.1 J/kg K for H = 20 kOe in a HoAl2Ge2 single crystal is obtained, which is closely associated to the magnetic anisotropy of the SDW order and its response to the external magnetic field. We discuss the large MCE in terms of the field-induced metamagnetic transition from the incommensurate SDW order to the ferromagnetic order. Our study establishes the triangular lattice RAl2Ge2 (R = rare-earth elements) as a unique family of compounds to explore the existence of the incommensurate spin density waves and the correlated physical properties.
资助者	Ministry of Science and Technology of China ; National Natural Science Foundation of China
DOI	10.1103/PhysRevB.106.134426
收录类别	SCI
语种	英语
资助项目	Ministry of Science and Technology of China[2020YFA0406002] ; Ministry of Science and Technology of China[2021YFB3501201] ; National Natural Science Foundation of China[52071323] ; National Natural Science Foundation of China[12104255] ; National Natural Science Foundation of China[52031014] ; National Natural Science Foundation of China[12134020]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000878645700002
出版者	AMER PHYSICAL SOC
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/176625
专题	中国科学院金属研究所
通讯作者	Sheng, Jieming
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China 4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China 5.Oak Ridge Natl Lab, Neutron Sci Div, Oak Ridge, TN 37831 USA 6.Jiangxi Univ Sci & Technol, Coll Rare Earths, Jiangxi Key Lab Rare Earth Magnet Mat & Devices, Ganzhou 341000, Peoples R China 7.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Gao, Fei,Sheng, Jieming,Ren, Weijun,et al. Incommensurate spin density wave and magnetocaloric effect in the metallic triangular lattice HoAl2Ge2 br[J]. PHYSICAL REVIEW B,2022,106(13):8.
APA	Gao, Fei.,Sheng, Jieming.,Ren, Weijun.,Zhang, Qiang.,Luo, Xiaohua.,...&Zhang, Zhidong.(2022).Incommensurate spin density wave and magnetocaloric effect in the metallic triangular lattice HoAl2Ge2 br.PHYSICAL REVIEW B,106(13),8.
MLA	Gao, Fei,et al."Incommensurate spin density wave and magnetocaloric effect in the metallic triangular lattice HoAl2Ge2 br".PHYSICAL REVIEW B 106.13(2022):8.