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Durham University

Department of Physics

Staff profile

Publication details for Professor Tom Lancaster

Lewtas, H.J., Lancaster, T., Baker, P.J., Blundell, S.J., Prabhakaran, D. & Pratt, F.L. (2010). Local magnetism and magnetoelectric effect in HoMnO(3) studied with muon-spin relaxation. Physical review B 81(1): 014402.

Author(s) from Durham

Abstract

We present the results of muon-spin relaxation (μ+SR) measurements on the hexagonal manganite HoMnO3. Features in the temperature-dependent relaxation rate λ correlate with the magnetic transitions at 76, 38, and 34 K. The highest temperature transition, associated with the ordering of Mn3+ moments has the largest effect on λ. The application of a static electric field of E=5×106 Vm−1 below T=50 K causes a small reduction in λ which is suggestive of coupling between ferroelectric and magnetic domain walls in the ordered state of the material.