World Journal of Condensed Matter Physics

Volume 2, Issue 2 (May 2012)

ISSN Print: 2160-6919   ISSN Online: 2160-6927

Google-based Impact Factor: 1.12  Citations  

Dielectric Properties and the Phase Transition of Pure and Cerium Doped Calcium-Barium-Niobate

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DOI: 10.4236/wjcmp.2012.22014    5,284 Downloads   9,404 Views  Citations

ABSTRACT

The complex dielectric constant of pure and cerium doped calcium-barium-niobate (CBN) was studied at frequencies 20 Hz ≤ f ≤ 1 MHz in the temperature range 300 K ≤ T ≤ 650 K and compared with the results for the well known ferroelectric relaxor strontium-barium-niobate (SBN). By the analysis of the systematically taken temperature and frequency dependent measurements of the dielectric constant the phase transition characteristic of the investigated materials was evaluated. From the results it must be assumed that CBN shows a slightly diffuse phase transition without relaxor behavior. Doping with cerium yields a definitely different phase transition characteristic with some indications for a relaxor type ferroelectric material, which are common from SBN.

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Niemer, A. , Pankrath, R. , Betzler, K. , Burianek, M. and Muehlberg, M. (2012) Dielectric Properties and the Phase Transition of Pure and Cerium Doped Calcium-Barium-Niobate. World Journal of Condensed Matter Physics, 2, 80-84. doi: 10.4236/wjcmp.2012.22014.

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