Shift in Morphotropic Phase Boundary in La-Doped BiFeO3–PbTiO3 Piezoceramics

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概要

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• Polycrystalline BiFeO3–PbTiO3 (BF–PT) powders with mixed tetragonal and rhombohedral crystal structure (morphotropic phase boundary: MPB) were modified with lanthanum to provide a wide variation in tetragonal distortion. X-ray diffraction from both the powder and the corresponding bulk ceramic demonstrated that the MPB in the bulk is shifted from 1–5 mol % towards the tetragonal PT as compared to the powder. This shift was correlated with the degree of tetragonal distortion as quantified by $c/a$ ratio.

• 2009-12-25

著者

• Bell Andrew

  Institute For Materials Research The University Of Leeds

• Leist Thorsten

  Institute of Materials Science, Technische Universität Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany

• Jo Wook

  Institute of Materials Science, Technische Universität Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany

• Comyn Timothy

  Institute of Materials Research, University of Leeds, Leeds, LS2 9JT, U.K.

• Rödel Jürgen

  Institute of Materials Science, Technische Universität Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany

• Jo Wook

  Institute of Materials Science, Technische Universität Darmstadt, Petersenstr. 23, 64287 Darmstadt, Germany

• Jo Wook

  Institute of Materials Science, Technische Universität Darmstadt, 64287 Darmstadt, Germany

• Bell Andrew

  Institute of Materials Research, University of Leeds, Leeds, LS2 9JT, U.K.

関連論文

• Shift in Morphotropic Phase Boundary in La-Doped BiFeO3–PbTiO3 Piezoceramics
• A Two Order Parameter Thermodynamic Model for Pb(Zr1-xTix)O3
• Effect of K0.5Na0.5NbO3 on Properties at and off the Morphotropic Phase Boundary in Bi0.5Na0.5TiO3--Bi0.5K0.5TiO3 Ceramics

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