Dielectric and structural studies in the systems Ba(Ti,Nb)O3 and Ba(Ti,Ta)O3

Subbarao, E. C. ; Shirane, G. (1959) Dielectric and structural studies in the systems Ba(Ti,Nb)O3 and Ba(Ti,Ta)O3 Journal of the American Ceramic Society, 42 (6). pp. 279-284. ISSN 0002-7820

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1151-...

Related URL: http://dx.doi.org/10.1111/j.1151-2916.1959.tb12954.x

Abstract

The dielectric properties, lattice parameters, and X-ray and neutron diffraction intensities of solid solutions of BaTiO3 containing Nb or Ta were studied. These solid solutions have a perovskite-type structure with part of the Ti4+ ions replaced by Nb5+ or Ta6+ ions and with some cation vacancies. These solid solutions exhibit a remarkable lowering of the Curie point, but the tetragonal-orthorhombic and the orthorhombic-rhombohedral transition points are raised.

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