Structural and dielectric characteristics of Ba2MeWO6 (Me=Mg, Ni, Zn) double peroliskites

被引：9

作者：

Khalyavin, DD ^{[1
]}

Han, JP ^{[1
]}

Senos, AMR ^{[1
]}

Mantas, PQ ^{[1
]}

机构：

[1] Univ Aveiro, Dept Ceram & Glass Engn, CICECO, P-3810193 Aveiro, Portugal

来源：

ADVANCED MATERIALS FORUM II | 2004年 / 455-456卷

关键词：

perovskite oxides; microwave ceramic; ionic ordering; dielectrics;

D O I：

10.4028/www.scientific.net/MSF.455-456.30

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ba2MeWO6 (Me=Mg, Ni, Zn) double perovskites were prepared by the conventional reaction method. The crystal structure of these compounds is characterized by the cubic symmetry (space group Fm3m) with a complete NaCl type ordering between Me2+ and W6+ ions. In all cases, dense (similar to98%) and homogeneous ceramics were obtained. An investigation of the dielectric characteristics was carried out at radio and microwave frequencies. Comparative analysis with dielectric properties reported early for another complex barium-based perovskites has been done. It was concluded that the charge distribution between B-site ions has a considerable influence on the temperature behaviour of the permittivity.

引用

页码：30 / 34

页数：5

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