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

doi:10.1088/1742-6596/51/1/020

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

IMR - Institute for Materials Research (institute affiliation only)

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2 Citations (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 language	English
Article number	020
Pages (from-to)	95-98
Number of pages	4
Journal	Journal of Physics: Conference Series
Volume	51
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/51/1/020
Publication status	Published - 2006 Dec 1

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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.",

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T1 - Half-Step magnetization in the polyoxometalate family with Cu 3-type triangular spin ring

AU - Choi, K. Y.

AU - Matsuda, Y. H.

AU - Nojiri, H.

AU - Kortz, U.

AU - Hussain, F.

AU - Dalal, N. S.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - 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.

AB - 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.

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

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