Chemistry, Processing, and Microwave Dielectric Properties of Mn-Substituted KTaO3 Ceramics

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Mn-doped KTaO3 samples were prepared by the solid-state method. From the analysis of A-and B-site substitution characteristics, we determined the solid solubility limits for both doping mechanisms, the influence on unit cell parameters, the phase relations, and the sintering characteristics. The sintered samples were used for the analysis of microwave dielectric properties. From the temperature and frequency dependence of permittivity and dielectric loss as a function of Mn content in KTaO3 the behavior of polar regions, induced by the doping, was estimated.

Document Type: Research Article


Affiliations: 1: Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K. 2: London South Bank University, 103 Borough Road, London SE1 0AA, U.K.

Publication date: March 1, 2010

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