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Phase transition in Li{sub 1/2}Bi{sub 1/2}TiO{sub 3}

Conference:

Abstract

Full text: Recent advancements in the electronics in this miniaturization age are found in many ferroelectric based materials of different structural families. Among them, perovskites are being used for the possible forefront applications in the areas of research as well as in industrial applications. Though a lot of lead-based compounds like PZT, PMN etc. have been investigated for device applications, the manufacturing companies are now heading towards the environmental friendly lead-free compounds. Li{sub 1/2}Bi{sub 1/2}TiO{sub 3} comes under this group. Here we report the studies of phase transition of Li{sub 1/2}Bi{sub 1/2}TiO{sub 3} (LBT) ceramic which was prepared by a mixed-oxide technique. The formation of the compound was confirmed by XRD studies. The dielectric permittivity, the loss tangent and polarization of the sample were studied in a wide frequency and temperature range. Detailed analysis of impedance spectrum obtained at different temperatures and frequencies suggested that the electrical properties of the material are strongly temperature dependant. The Nequist plots clearly showed the presence of both bulk and grain boundary effect in the compound. The frequency dependent ac conductivity at different temperatures indicated the conduction process is thermally activated. The activation energy was calculated from the temperature variation of d.c. conductivity.
Authors:
Barik, Subrat K; Choudhary, R N.P.; [1]  Mahapatra, P K [2] 
  1. Dept. of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur (India)
  2. Dept. of Physics and Technophysics, Vidyasagar Univ., Midnapur (India)
Publication Date:
Jul 01, 2008
Product Type:
Conference
Resource Relation:
Conference: RAMS-08: national seminar on recent advances in materials sciences, Dhanbad (India), 15-17 Feb 2008; Related Information: In: National seminar on recent advances in materials sciences: proceedings, 110 pages.
Subject:
36 MATERIALS SCIENCE; DIELECTRIC PROPERTIES; GRAIN BOUNDARIES; LITHIUM OXIDES; PHASE TRANSFORMATIONS; X-RAY DIFFRACTION
OSTI ID:
21093241
Research Organizations:
Dept. of Applied Physics, Indian School for Mines Univ., Dhanbad (India)
Country of Origin:
India
Language:
English
Other Identifying Numbers:
TRN: IN0801564103292
Submitting Site:
INIS
Size:
page(s) 33
Announcement Date:
Nov 13, 2008

Conference:

Citation Formats

Barik, Subrat K, Choudhary, R N.P., and Mahapatra, P K. Phase transition in Li{sub 1/2}Bi{sub 1/2}TiO{sub 3}. India: N. p., 2008. Web.
Barik, Subrat K, Choudhary, R N.P., & Mahapatra, P K. Phase transition in Li{sub 1/2}Bi{sub 1/2}TiO{sub 3}. India.
Barik, Subrat K, Choudhary, R N.P., and Mahapatra, P K. 2008. "Phase transition in Li{sub 1/2}Bi{sub 1/2}TiO{sub 3}." India.
@misc{etde_21093241,
title = {Phase transition in Li{sub 1/2}Bi{sub 1/2}TiO{sub 3}}
author = {Barik, Subrat K, Choudhary, R N.P., and Mahapatra, P K}
abstractNote = {Full text: Recent advancements in the electronics in this miniaturization age are found in many ferroelectric based materials of different structural families. Among them, perovskites are being used for the possible forefront applications in the areas of research as well as in industrial applications. Though a lot of lead-based compounds like PZT, PMN etc. have been investigated for device applications, the manufacturing companies are now heading towards the environmental friendly lead-free compounds. Li{sub 1/2}Bi{sub 1/2}TiO{sub 3} comes under this group. Here we report the studies of phase transition of Li{sub 1/2}Bi{sub 1/2}TiO{sub 3} (LBT) ceramic which was prepared by a mixed-oxide technique. The formation of the compound was confirmed by XRD studies. The dielectric permittivity, the loss tangent and polarization of the sample were studied in a wide frequency and temperature range. Detailed analysis of impedance spectrum obtained at different temperatures and frequencies suggested that the electrical properties of the material are strongly temperature dependant. The Nequist plots clearly showed the presence of both bulk and grain boundary effect in the compound. The frequency dependent ac conductivity at different temperatures indicated the conduction process is thermally activated. The activation energy was calculated from the temperature variation of d.c. conductivity.}
place = {India}
year = {2008}
month = {Jul}
}