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Scaling behavior of the magnetocapacitance of YbMnO(3)
U Adem1, M Mostovoy, N Bellido
1Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands.
Abstract:
We observe a seemingly complex magnetic field dependence of the dielectric constant of hexagonal YbMnO(3) near the spin ordering temperature. After rescaling, the data taken at different temperatures and magnetic fields collapse on a single curve describing the sharp anomaly in nonlinear magnetoelectric response at the magnetic transition. We show that this anomaly is a result of the competition between two magnetic phases. The scaling and the shape of the anomaly are explained using the phenomenological Landau description of the competing phases in hexagonal manganites.
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