Spin correlations and exchange in square lattice frustrated ferromagnets

M et al Skoulatos, NSP Shannon

Research output: Contribution to journalArticle (Academic Journal)peer-review

35 Citations (Scopus)

Abstract

The J1-J2 model on a square lattice exhibits a rich variety of different forms of magnetic order that depend sensitively on the ratio of exchange constants J2/J1. We use bulk magnetometry and polarized neutron scattering to determine J1 and J2 unambiguously for two materials in a new family of vanadium phosphates, Pb2VO(PO4)2 and SrZnVO(PO4)2, and we find that they have ferromagnetic J1. The ordered moment in the collinear antiferromagnetic ground state is reduced, and the diffuse magnetic scattering is enhanced, as the predicted bond-nematic region of the phase diagram is approached.
Translated title of the contributionSpin correlations and exchange in square lattice frustrated ferromagnets
Original languageEnglish
Pages (from-to)57005-1 - 5700-6
Number of pages6
JournalEPL
Volume88
DOIs
Publication statusPublished - Dec 2009

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