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Title: Investigation of domain behaviour in 0.7Pb(Mg1/3Nb 2/3) O3-0.3PbTiO3 single crystals at different temperatures in the transmission electron microscope
Authors: Meng, X
Baba-Kishi, KZ
Pang, GKH
Chan, HL 
Choy, CL 
Luo, HS
Issue Date: 2003
Publisher: Taylor & Francis
Source: Philosophical magazine, 2003, v. 83, no. 4, p. 513-526 How to cite?
Journal: Philosophical magazine : structure and properties of condensed matter 
Abstract: Using transmission electron microscopy, in-situ changes in ferroelastic domains in 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO 3 single crystals were observed at 60 to -163°C. At -163°C, the microscopic tweed morphology of the ferroelastic domains rotated by 90°, and certain orientation changes in the mesoscopic sawtooth domains took place. At this temperature, the ferroelastic domains became coarsened and certain S-shaped mesoscopic domains were reshaped. The disappearance and/or changes in the orientations of both the sawtooth and the ferroelastic domains were reversible upon return to room temperature. On heating to 60°C, both the mesoscopic sawtooth and the microscopic tweed domains were stable below 53°C. Above 53°C, the mesoscopic walls disappeared and the contrast of the tweed domains became blurred. Upon return to room temperature from 60°C, the mesoscopic domain patterns could not be retrieved, indicating that the transformation was irreversible. The morphology of the tweeds at this temperature indicated a structural transition from a two-variant domain state to a multivariant state, eliminating mesoscopic boundaries.
ISSN: 1478-6435
EISSN: 1478-6443
DOI: 10.1080/01418610210164375
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