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Examples of domain studies of electric field or stress-induced phase transitions in the ferroic crystals of Cr₃B₇O₁₃Cl, Cd₂Nb₂O₇ and Pb(Mg₁/₃Nb₂/₃)O₃

ContributorsYe, Zuo-Guang
Published inFerroelectrics, vol. 140, p. 319-326
Publication date1993
Abstract

Stress or electric field-induced phase transitions have been studied in single crystals of Cr-Cl boracite, Cd2Nb2O7 and Pb(Mg1/3Nb2/3O3 by means of polarized light microscopy associated with electric characterizations. A mm2 phase was found to be induced in Cr-Cl by spontaneous stress at the mechanically non-matching 43m/42m interface at 264 K. Application of an electric field to the 42m phase can induce a mm2 phase, as wa characterized by an antiferroelectric behaviour. In the Cd2Nb2O7 crystals a field-induced phase ttransition mm2(pp)->mm2(ss)was observed. A macroscopically polar phase can be induced in PMN by E, with appearance of macrodomains, birefringent on (100)cub and (110)cub and optically isotropic on (111)cub (O.A//<111>cub ). the symmetry of the induced phase was deduced to be trigonal 3m. The polarized light microscopy was shown to be a powerful tool for studying the induced phase transitions in ferroic materials.

Keywords
  • Induced phase transition
  • Domains
  • Cr₃B₇O₁₃Cl
  • Cd₂Nb₂O₇
  • Pb(Mg₁/₃Nb₂/₃)O₃
Citation (ISO format)
YE, Zuo-Guang. Examples of domain studies of electric field or stress-induced phase transitions in the ferroic crystals of Cr₃B₇O₁₃Cl, Cd₂Nb₂O₇ and Pb(Mg₁/₃Nb₂/₃)O₃. In: Ferroelectrics, 1993, vol. 140, p. 319–326.
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Identifiers
  • PID : unige:81200
ISSN of the journal0015-0193
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