UNSPECIFIED (2003) Triangular lattice antiferromagnet RbFe(MoO4)(2) in an applied magnetic field. In: 2nd Moscow International Symposium on Magnetism (MISM 2001), JUN 20-24, 2001, MOSCOW STATE UNIV, MOSCOW, RUSSIA.

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Abstract

RbFe(MoO4)(2) is a rare example of a nearly two-dimensional Heisenberg antiferromagnet on a triangular lattice. We have studied its low-temperature magnetic properties by means of single crystal ESR spectroscopy and magnetization measurements. On the basis of the obtained results an H-T phase diagram, containing at least five different magnetic phases is constructed. In zero field, RbFe(MoO4)(2) undergoes a phase transition at T-N = 3.8 K into a noncollinear spin structure with all the spins confined in the hexagonal plane. The application of an external magnetic field in the plane induces a collinear spin state (H-cl = 47 kOe, H-c2 = 71 kOe) and produces magnetization plateaux at one-third of the saturation moment. Both the ESR and magnetization measurements also clearly indicate an additional first-order phase transition in a field of 35 kOe. The exact nature of this phase transition is unclear. (C) 2002 Elsevier Science B.V. All rights reserved.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Publisher:	ELSEVIER SCIENCE BV
ISSN:	0304-8853
Date:	March 2003
Volume:	258
Number:	Sp. Iss. SI
Number of Pages:	4
Page Range:	pp. 394-397
Publication Status:	Published
Title of Event:	2nd Moscow International Symposium on Magnetism (MISM 2001)
Location of Event:	MOSCOW STATE UNIV, MOSCOW, RUSSIA
Date(s) of Event:	JUN 20-24, 2001
URI:	http://wrap.warwick.ac.uk/id/eprint/9896

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