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Title: Ferroelectric studies of excessive Sm{sup 3+} containing perovskite PZT and pyrochlore biphase ceramics

Polycrystalline samples of Sm{sup 3+} modified Pb{sub 1−x} Sm{sub 2x/3} (Zr{sub 0.6}Ti{sub 0.4}) O{sub 3} (PSZT) ceramics (where x = 0.1, 0.2, 0.3, 0.4) have been prepared by a high energy ball milling technique, followed by calcination at 950°C and sintering at 1150°C. As x is increased more than 0.1 mole%, considerable secondary phase has been formed. This phase has been identified as pyrochlore Sm{sub 2}Ti{sub 2}O{sub 7} from its X-ray diffraction (XRD) peaks. The XRD studies also indicate that the perovskte phases of the present systems undergo a dopant induced phase transformation from rhombohedral to tetragonal strucure. All the samples exhibit diffuse but non-relaxor type ferroelectric phase transition. The results of dielectric and hysteresis studies of these materials are presented.
Authors:
;  [1] ;  [2] ;  [3]
  1. Physics Department, Andhra University, Visakhapatnam - 530 003, AP (India)
  2. Department of Engineering Physics, GITAM University, Visakhapatnam - 530 045, AP (India)
  3. UGC-DAE Consortium for Scientific Research, University Campus, Indore-452017, MP (India)
Publication Date:
OSTI Identifier:
22269518
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; 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; 36 MATERIALS SCIENCE; CALCINATION; CERAMICS; CONCENTRATION RATIO; FERROELECTRIC MATERIALS; HYSTERESIS; MILLING; PHASE TRANSFORMATIONS; POLYCRYSTALS; PZT; SAMARIUM COMPOUNDS; SAMARIUM IONS; SINTERING; TETRAGONAL LATTICES; TRIGONAL LATTICES; X-RAY DIFFRACTION