<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Slight A-site deficiency in ordered perovskites Ba(M2+
                        1/3Nb2/3)O3(M - Co, Zn, Mg) is shown to promote the formation of single-phase dense ceramics, in which the microwave (MW) quality factor Q attains its maximum values. Any further decrease in the Ba concentration in Ba(M2+
                        1/3Nb2/3)O3 always results in the formation of a multiphase material containing secondary phase with the tetragonal tungsten bronze (TTB) structure. The amount of TTB phase in the perovskite matrix was found to depend on both the Ba concentration and the sintering temperature. The composition and properties of the TTB phase are discussed in terms of their effect on the MW dielectric parameters of Ba(M2+
                        1/3Nb2/3)O3 ceramics.</p></abstract>

Slight A-site deficiency in ordered perovskites Ba(M2+
                        1/3Nb2/3)O3(M - Co, Zn, Mg) is shown to promote the formation of single-phase dense ceramics, in which the microwave (MW) quality factor Q attains its maximum values. Any further decrease in the Ba concentration in Ba(M2+
                        1/3Nb2/3)O3 always results in the formation of a multiphase material containing secondary phase with the tetragonal tungsten bronze (TTB) structure. The amount of TTB phase in the perovskite matrix was found to depend on both the Ba concentration and the sintering temperature. The composition and properties of the TTB phase are discussed in terms of their effect on the MW dielectric parameters of Ba(M2+
                        1/3Nb2/3)O3 ceramics.

A-site deficient perovskites Ba(M2+
                     1/3Nb2/3)O3: microstructural attributes for a high quality factor

V.I. Vernadskii Institute of General and Inorganic Chemistry, Kyiv, 03680, Ukraine

Jozef Stefan Institute, Ljubljana, 1001, Slovenia

National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Slight A-site deficiency in ordered perovskites Ba(M2+
                        1/3Nb2/3)O3(M - Co, Zn, Mg) is shown to promote the formation of single-phase...

A-site deficient perovskites Ba(M2+ 1/3Nb2/3)O3: microstructural attributes for a high quality factor

Published Online: Aug 03, 2011

Page range: 56 - 62

DOI: https://doi.org/10.2478/s13536-011-0010-z

Keywords
ordered perovskites, cation deficiency, microwave naterials, dielectric properties

© 2011 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A-site deficient perovskites Ba(M2+ 1/3Nb2/3)O3: microstructural attributes for a high quality factor

Published Online: Aug 03, 2011

Page range: 56 - 62

DOI: https://doi.org/10.2478/s13536-011-0010-z

Keywordsordered perovskites, cation deficiency, microwave naterials, dielectric properties

© 2011 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
ordered perovskites, cation deficiency, microwave naterials, dielectric properties