Francisites as new geometrically frustrated quasi-two-dimensional magnets

Abstract The synthesis of new geometrically frustrated layered systems has fueled experimental work and progress in building models of low-dimensional magnetism. Compounds with the structure of the francisite mineral, Cu 3 Bi(SeO 3 ) 2 O 2 Cl, are quasi-two-dimensional antiferromagnets with a kagome...

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Bibliographic Details
Published in:Physics Uspekhi 2021-04, Vol.64 (4), p.344-356
Main Authors: Markina, M M, Berdonosov, P S, Dolgikh, V A, Zakharov, K V, Kuznetsova, E S, Vasiliev, A N
Format: Article
Language:English
Subjects:
Antiferromagnetism
Broadband
Electromagnetic radiation
Ferromagnetism
Frustrated magnetism
Interlayers
Ion implantation
Magnetism
Magnets
Metal ions
Phase transitions
Rare earth elements
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Summary:Abstract The synthesis of new geometrically frustrated layered systems has fueled experimental work and progress in building models of low-dimensional magnetism. Compounds with the structure of the francisite mineral, Cu 3 Bi(SeO 3 ) 2 O 2 Cl, are quasi-two-dimensional antiferromagnets with a kagome-type lattice. With the dominant ferromagnetic interaction in the layer and a weak interlayer antiferromagnetic bond, the main noncollinear state of francisite is easily destroyed by an external magnetic field, which opens the possibility of reversible switching between states with the minimum and maximum possible magnetization. In the region of metamagnetic transition, multiferroelectric effects and broadband absorption of electromagnetic waves are observed. The implantation of rare-earth ions R into the Bi position is accompanied by spin-reorientation phase transitions in Cu 3 R (SeO 3 ) 2 O 2 X compounds, where X = Cl, Br.
ISSN:1063-7869
1468-4780
DOI:10.3367/UFNe.2020.05.038773