Half-Step magnetization in the polyoxometalate family with Cu 3-type triangular spin ring

K. Y. Choi, Y. H. Matsuda, H. Nojiri, U. Kortz, F. Hussain, N. S. Dalal

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1 Citation (Scopus)

Abstract

We report on pulsed field magnetization and ESR measurements of the family of copper(II)-substituted polyoxotungstates [Cu3(H2O) 3(α-XW9O33)2]12-. (X As, Sb) where the three Cu2+(S 1/2) ions form an antiferromagnetically-coupled triangle. The distinct features are the observation of half step magnetization and hysteresis loops as well as asymmetric/symmetric magnetization between a positive and negative field, depending on the diamagnetic heteroatom X. This is attributed to the interplay between an adiabatic magnetization and Dzyaloshinskii-Moriya interactions. Moreover, the more symmetric magnetization curve of X Sb is discussed in terms of dynamical mixing of a S 1/2 state via a phonon mode.

Original languageEnglish
Article number020
Pages (from-to)95-98
Number of pages4
JournalJournal of Physics: Conference Series
Volume51
Issue number1
DOIs
Publication statusPublished - 2006 Dec 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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