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arXiv · 0901.1816

Spin-glass state and long-range magnetic order in Pb(Fe1/2Nb1/2)O3

G. -M. Rotaru·B. Roessli·A. Amato·S. N. Gvasaliya·C. Mudry·S. G. Lushnikov·T. A. Shaplygina
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Abstract

We have investigated the magnetic ground-state of the multiferroic relaxor ferroelectric \pfn with $μ$SR spectroscopy and neutron scattering. We find that a transition to a partially disordered phase occurs below T=20 K that coexists with long-range antiferromagnetic ordering. The disordered phase resembles a spin-glass. No clustering of magnetic ions could be evidenced by $μ$SR so that the coexistence appears homogeneous in the sample.

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G. -M. Rotaru, B. Roessli, A. Amato, S. N. Gvasaliya, C. Mudry, S. G. Lushnikov, T. A. Shaplygina. 2009-06-02. Spin-glass state and long-range magnetic order in Pb(Fe1/2Nb1/2)O3. https://doi.org/10.1103/physrevb.79.184430

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