Journal
JOURNAL OF APPLIED PHYSICS
Volume 109, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3555093
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- Department of Science and Technology, India
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A powder neutron diffraction study was carried out on 0.8BiFeO(3)-0.2PbTiO(3) in the temperature range 27-1000 degrees C. The system exhibits magnetic transition at similar to 300 degrees C and a rhombohedral (R3c)-cubic (Pm3m) ferroelectric phase transition at similar to 650 degrees C. Anomalous variation in the lattice parameters and the octahedral tilt angle is observed across the magnetic transition temperature. In the magnetic phase, the c parameter is contracted and the octahedral tilt angle is slightly increased. The results suggest coupling between the spin, lattice and structural degrees of freedom. (C) 2011 American Institute of Physics. [doi:10.1063/1.3555093]
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