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Title: Effects of disorder on properties of non-conventionally prepared barium titanate

Barium titanaten (BaTiO{sub 3}) nanoparticles were prepared by non-conventional as well as conventional solid state reaction. A better response about the grain size distribution was obtained in the former. The former was then milled to get grains of successive reduced sizes. The defects induced within the samples were studies by positron annihilation spectroscopy. The effect of defects on dielectric property of sample with finest grains was measured. Dielectric stability with temperature was increased with decreasing grain size and the peak was shifted towards the lower value due to the enhancement of grain boundary defects generated due to milling for long time.
Authors:
;  [1] ; ;  [2] ;  [3]
  1. Department of Physics, West Bengal State University, Barasat, West Bengal-700126. India (India)
  2. UGC-DAE Consortium for Scientific Research, III/LB-8, Bidhannagar, Kolkata-700098 (India)
  3. Department of Applied Material Science, Saha Institute of Nuclear Physics, Kolkata-700064 (India)
Publication Date:
OSTI Identifier:
22490343
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 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; ANNIHILATION; BARIUM COMPOUNDS; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; GAMMA SPECTROSCOPY; GRAIN BOUNDARIES; GRAIN SIZE; MILLING; NANOPARTICLES; PHASE STABILITY; POSITRONS; SOLIDS; TITANATES