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Title: Thermal expansion behavior and estimated total polarizations of lead zirconate titanate-lead nickel niobate ceramics
Authors: Muangjai Unruan
Anurak Prasatkhetragarn
Yongyut Laosiritaworn
Supon Ananta
Orawan Khamman
Rattikorn Yimnirun
Ruyan Guo
Amar Bhalla
Keywords: Engineering
Materials Science
Physics and Astronomy
Issue Date: 30-Sep-2010
Abstract: Thermal expansion properties of lead zirconate titanate-lead nickel niobate ((1 - x)PZT-xPNN, x = 0.1-0.5) ceramics were determined in the temperature range of approximately - 100 to + 450 °C by dilatometer thermal expansion measurement. The observed deviation from the straight line below a Burns-like temperature for all the compositions was interpreted as due to the contribution from the dynamic polarization fluctuations of the relaxor part of the compositions. The Burns temperature was determined and found to increase with increasing PZT concentration. The local polarization was calculated from the thermal expansion data. Various aspects of understanding the polarization behavior and other effects in this ferroelectric system were also examined and discussed. © 2010 Elsevier B.V.
ISSN: 0167577X
Appears in Collections:CMUL: Journal Articles

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