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Persistent URL http://purl.org/net/epubs/work/50658
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Record Id 50658
Title High temperature neutron diffraction studies of 0.9BiFeO3-0.1PbTiO3
Abstract Neutron diffraction data were collected from sintered polycrystalline 0.9BiFeO3-0.1PbTiO3 at temperatures between 293 and 793 K and the crystal and magnetic structures refined by the Rietveld method. An antiferromagnetic Néel temperature of 592 K was determined from a Brillouin fit to the refined magnetic moments with a ground state of 4.34µB, showing no loss of moment per Fe site compared to BiFeO3. Some magnetic order was observed to persist above the Néel temperature. A maximum in the spontaneous rhombohedral strain was observed close to the Néel temperature, in a significant departure from typical Landau behavior for a ferroelectric and suggesting a coupling between the magnetic and nuclear structures.
Keywords Physics , Materials , Chemistry
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Language English (EN)
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Journal Article J Appl Phys 105, no. 9 (2009): 094108. doi:10.1063/1.3116735 2009