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Structure and properties of multiferroic (1 − x)BiFeO3xPbTiO3 single crystals

Published online by Cambridge University Press:  31 January 2011

W-M. Zhu
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
H-Y. Guo
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
Z-G. Ye*
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Single crystals of the multiferroic (1 − x)BiFeO3xPbTiO3 (BF–PT) solid solution with a nominal morphotropic phase boundary (MPB) composition were grown from flux. Structural characterization by x-ray diffraction shows the simultaneous existence of a tetragonal, an orthorhombic, and a rhombohedral perovskite phase in the crystals. A high ferroelectric Curie point of 660 °C was found in the BF–PT crystals by dielectric measurements. The variation of the magnetic moment as a function of temperature of the BF–PT crystals measured under zero field cooling mode reveals three anomalies with the highest one around 440 K, corresponding to the antiferromagnetic ordering temperatures of the rhombohedral, orthorhombic, and tetragonal phases, respectively. These results demonstrate the intrinsic relations between the MPB phase components and the macroscopic ferroic properties.

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Articles
Copyright
Copyright © Materials Research Society 2007

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References

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