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Title: Evidence for the suppression of intermediate anti-ferroelectric ordering and observation of hardening mechanism in Na{sub 1/2}Bi{sub 1/2}TiO{sub 3} ceramics through cobalt substitution

Co-ion (5 mol %) substitution in Na{sub 1/2}Bi{sub 1/2}TiO{sub 3} (NBT) host lattice and their effects on the structural, ferroelectric and dielectric behavior has been investigated thoroughly in this present study. The substituted Co-ion at Ti-site acts an acceptor type doping and hardens (i.e., increase in coercivity) the system without any noticeable change in the remanent polarization values. However, the intermediate antiferroelectric (AFE) ordering which exists between 200 °C–280 °C in NBT system has been suppressed due to Co-ion substitution, which is an interesting feature for device applications.
Authors:
 [1] ;  [2] ;  [3] ;  [1]
  1. Advanced Functional Materials Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Andhra Pradesh - 502 205, India. (India)
  2. (India)
  3. Department of Materials Science and Engineering, Indian Institute of Technology Hyderabad, Andhra Pradesh - 502 205, India. (India)
Publication Date:
OSTI Identifier:
22251701
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 4; Journal Issue: 1; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; COBALT; COBALT IONS; COERCIVE FORCE; EQUIPMENT; FERROELECTRIC MATERIALS; HARDENING; INHIBITION; POLARIZATION