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Title: Phase coexistence and transformations in field-cooled ternary piezoelectric single crystals near the morphotropic phase boundary

Structural phase transformations in (100)-oriented Pb(In{sub 1/2}Nb{sub 1/2})O{sub 3}-Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}-PbTiO{sub 3} single crystals have been investigated by X-ray diffraction. A cubic (C) → tetragonal (T) → monoclinic-C (M{sub C}) transformation sequence was observed in the field-cooled condition. Two phase coexistence regions of C + T and T + M{sub C} were found. In addition to an increase in the C → T phase transition temperature and a decrease of the T → M{sub C} one, a broadening of the coexistence regions was also found with increasing field. This broadening can be explained by the presence of polar nano regions within the C, T, and M{sub C} phase regions.
Authors:
; ; ; ; ;  [1] ;  [2]
  1. Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States)
  2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, 215 Chengbei Road, Jiading, Shanghai 201800 (China)
Publication Date:
OSTI Identifier:
22395487
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; LEAD COMPOUNDS; MAGNESIUM COMPOUNDS; MONOCLINIC LATTICES; MONOCRYSTALS; NIOBIUM COMPOUNDS; PHASE STABILITY; PHASE STUDIES; PHASE TRANSFORMATIONS; PIEZOELECTRICITY; TITANATES; TRANSITION TEMPERATURE; X-RAY DIFFRACTION