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arXiv · 0908.3782

Local magnetism and magnetoelectric effect in HoMnO3 studied with muon-spin relaxation

H. J. Lewtas·T. Lancaster·P. J. Baker·S. J. Blundell·D. Prabhakaran·F. L. Pratt
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Abstract

We present the results of muon-spin relaxation (muSR) measurements on the hexagonal manganite HoMnO3. Features in the temperature-dependent relaxation rate, lambda, correlate with the magnetic transitions at 76 K, 38 K and 34 K. The highest temperature transition, associated with the ordering of Mn3+ moments has the largest effect on lambda. The application of a static electric field of E=10^4 Vm^-1 below T=50 K causes a small reduction in lambda which is suggestive of coupling between ferroelectric and magnetic domain walls in the ordered state of the material.

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H. J. Lewtas, T. Lancaster, P. J. Baker, S. J. Blundell, D. Prabhakaran, F. L. Pratt. 2009-08-26. Local magnetism and magnetoelectric effect in HoMnO3 studied with muon-spin relaxation. https://doi.org/10.1103/physrevb.81.014402

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