Smirnov, A. I., Svistov, L. E., Prozorova, L. A., Zheludev, A., Lumsden, M. D., Ressouche, E., Petrenko, O. A., Nishikawa, K., Kimura, S., Hagiwara, M., Kindo, K., Shapiro, A. Ya. and Demianets, L. N.. (2009) Chiral and collinear ordering in a distorted triangular antiferromagnet. Physical Review Letters, Vol.102 (No.3). Article no. 037202. ISSN 0031-9007

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Abstract

Magnetization, specific heat, and neutron diffraction measurements are used to map out the entire magnetic phase diagram of KFe(MoO4)(2). This stacked triangular antiferromagnet is structurally similar to the famous multiferroic system RbFe(MoO4)(2). Because of an additional small crystallographic distortion, it contains two sets of inequivalent distorted magnetic triangular lattices. As a result, the spin network breaks down into two intercalated yet almost independent magnetic subsystems. One is a collinear antiferromagnet that shows a simple spin-flop behavior in applied magnetic fields. The other is a helimagnet that instead goes through a series of exotic commensurate-incommensurate phase transformations. In the various phases one observes either true three-dimensional or unconventional quasi-two-dimensional ordering.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Date:	23 January 2009
Volume:	Vol.102
Number:	No.3
Number of Pages:	4
Page Range:	Article no. 037202
Identification Number:	10.1103/PhysRevLett.102.037202
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Warwick University, Engineering and Physical Sciences Research Council (EPSRC), KYOKUGEN, Osaka University
URI:	http://wrap.warwick.ac.uk/id/eprint/28625

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