Anantharaman, M R; Joy, P A; Sagar, S(Taylor & Francis, March 13, 2009)
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Abstract:
Here we report the multiferroic nature of charge ordered manganite Gd0.5Sr0.5MnO3 for
the first time. The temperature variation of dielectric constant shows broad relaxor type
ferroelectric transition at around 210K and magnetization measurements shows weak
ferromagnetism at 50K. The dielectric peak is very close to charge ordering temperature
which is an evidence of the link between electronic state and increase of dielectric
response. Butterfly variation of capacitance with voltage confirms ferroelectric nature
of the sample at room temperature