Magnetoelectric phenomena in Fe langasites

doi:10.1103/PhysRevB.105.104424

	Magnetoelectric phenomena in Fe langasites
	Tikhanovskii, A. Yu.6,7; Ivanov, V. Yu.6; Kuzmenko, A. M.2,6; Balbashov, A. M.; Wang, Z.3,4; Skumryev, V.1,5; Mukhin, A. A.6
刊名	PHYSICAL REVIEW B
	2022-03-25
卷号	105
ISSN号	2469-9950
DOI	10.1103/PhysRevB.105.104424
通讯作者	Tikhanovskii, A. Yu.(tikhanovskii@phystech.edu)
英文摘要	Experimental and theoretical studies of the magnetoelectric properties of a series of Fe langasite multiferroics (Ba3NbFe3Si2O14, Ba3TaFe3Si2O14, and Sr3TaFe3Si2O14) with planar triangular spiral magnetic structure and double chiral magnetic order have been carried out. Magnetic field induced electric polarization is observed to emerge in the basal ab??? plane of the trigonal crystal, depending on both the magnitude (up to 60 T) and orientation of the magnetic field. Remarkably, the induced polarization is very sensitive to the projection of the field onto the c axis, with a sharp increase in polarization found for small deviations of the field from the basal plane and the sign of polarization determined by the direction of the field deviation. At high magnetic fields, the electric polarization behavior changes qualitatively and strongly depends on the magnetic field orientation. A detailed group theoretical analysis of the magnetic and magnetoelectric properties of Fe langasites is presented, and a relationship between the polarization and magnetic order parameters in an external magnetic field is established. We show that, in a magnetic field, the spiral magnetic structure is rotated and canted with respect to the original structure under zero field. The competition between these two processes, rotation and canting, strongly depends on the magnetic field orientation, and determines the polarization behavior. We propose a simplified description of the Fe langasites??? triangular spiral magnetic structure at low temperatures and with saturated moments, characterized by the spiral plane orientation and the field-induced magnetization only. We establish that, at weak fields, the appearance of polarization occurs mainly due to the reorientation of the magnetic spiral (analogous to a spin-flop transition) and could be explained by the inverse Dzyaloshinskii-Moriya interaction. At high fields (above 8 T), the polarization change occurs via canting of the magnetic spiral, owing to Fe-Fe exchange and single-ion contributions.
资助项目	HLD at HZDR ; Russian Science Foundation[16-12-10531]
WOS关键词	SINGLE-CRYSTALS ; CZOCHRALSKI GROWTH ; BA3NBFE3SI2O14 ; MULTIFERROICS ; MODULATION
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000803018700004
资助机构	HLD at HZDR ; Russian Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131181]
专题	中国科学院合肥物质科学研究院
通讯作者	Tikhanovskii, A. Yu.
作者单位	1.Univ Autonoma Barcelona, Dept Fis, Barcelona 08193, Spain 2.Moscow Power Engn Inst, Moscow 111250, Russia 3.Helmholtz Zentrum, Hochfeld Magnetlabor Dresden, D-01314 Dresden, Germany 4.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Peoples R China 5.Inst Catalana Recerca & Estudis Avancats, Barcelona 08010, Spain 6.Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia 7.Moscow Inst Phys & Technol, Dolgoprudnyi, Moscow Region, Russia
推荐引用方式 GB/T 7714	Tikhanovskii, A. Yu.,Ivanov, V. Yu.,Kuzmenko, A. M.,et al. Magnetoelectric phenomena in Fe langasites[J]. PHYSICAL REVIEW B,2022,105.
APA	Tikhanovskii, A. Yu..,Ivanov, V. Yu..,Kuzmenko, A. M..,Balbashov, A. M..,Wang, Z..,...&Mukhin, A. A..(2022).Magnetoelectric phenomena in Fe langasites.PHYSICAL REVIEW B,105.
MLA	Tikhanovskii, A. Yu.,et al."Magnetoelectric phenomena in Fe langasites".PHYSICAL REVIEW B 105(2022).