Dielectric and Magnetic Properties of Pb(Fe1/2Ta1/2)O3
- 1 June 1968
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 7 (6)
- https://doi.org/10.1143/jjap.7.600
Abstract
Single crystals of Pb(Fe1/2Ta1/2)O3 were grown from ternary melts with excess PbO. The crystals, having cubic perovskite structure at room temperature, undergo a ferroelectric phase transition at about 243°K, changing to rhombohedral structure. The dielectric constant passes through a maximum of nearly 9500 at 1 KHz. The spontaneous polarization along [100] direction is ca 28 µC/cm2 at liquid nitrogen temperature. A magnetic anomaly at about 180°K is related to the onset of antiferromgnetic ordering.Keywords
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