Kim, YW Park, JH Park, JG 2024-01-21T07:08:17Z 2024-01-21T07:08:17Z 2021-09-02 2004-05 0955-2219 https://pubs.kist.re.kr/handle/201004/137632 We have studied the effect of sintering temperature and time on cationic ordering in BaMg1/3Nb2/3O3 (BMN) microwave dielectric ceramics using transmission electron microscopy. Energy-dispersive spectroscopy was used to analyze the local chemical compositions. It is revealed that according to the sintering conditions the BMN ceramics show diverse local cationic ordering behavior, such as the development of domain twinning and 'core-shell'-structured grains and the formation of local disordered domains, although generally having 1:2 cation ordering structure. The disordered structure is formed in Mg-excess regions. Such local chemical variation seems to be caused by the formation of BaNb2O6 second phase in the neighboring grain boundary. Microwave dielectric properties of the ceramics will also be discussed in relation to the structural variation. (C) 2003 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD DIELECTRIC-PROPERTIES BA(NI1/3NB2/3)O-3 Local cationic ordering behavior in Ba(Mg1/3Nb2/3)O-3 ceramics Article 10.1016/S0955-2219(03)00595-8 1 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.24, no.6, pp.1775 - 1779 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 24 6 1775 1779 scie scopus 000189247800175 2-s2.0-0942269461 Materials Science, Ceramics Materials Science Article; Proceedings Paper DIELECTRIC-PROPERTIES BA(NI1/3NB2/3)O-3 capacitors dielectric properties electron microscopy perovskites sintering