New perovskite oxides of the type (Ln1/3Ba1/3Ca1/3)(Zn1/3Ti⅔)O3-δ: Rietveld analysis and dielectric properties

Jha, P. ; Ganguli, A. K. (2006) New perovskite oxides of the type (Ln1/3Ba1/3Ca1/3)(Zn1/3Ti⅔)O3-δ: Rietveld analysis and dielectric properties Materials Chemistry and Physics, 97 (2-3). pp. 337-342. ISSN 0254-0584

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.matchemphys.2005.08.025

Abstract

Pure phases were obtained for the oxides (Ln1/3Ba1/3Ca1/3)(Zn1/3Ti2/3)O3-δ in case of Ln = La, Pr and Nd. These oxides crystallized in a cubic structure as observed from Rietveld refinement of powder X-ray diffraction studies and do not show any ordering of the cations. All the three compounds exhibit highly stable dielectric properties with respect to frequency (in the range 50-500 kHz) and temperature (35-300°C). The dielectric constant depends on the size of the cations and varies from 81 for the La-based oxide to 70 for the Nd-based oxides. The dielectric loss is in the range of 0.003-0.004 for all the three oxides at 100 kHz.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Ceramics; Oxides; Rietveld Analysis; Dielectric Properties
ID Code:61998
Deposited On:16 Sep 2011 03:54
Last Modified:16 Sep 2011 03:54

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