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Synthesis, Characterization, and Microwave Dielectric Properties of Sr 2− x La 2 Mg 1+ x W 2 O 12 ( x =0, 1) Ceramics
Author(s) -
Venugopal Vineeth,
Anjana Prabhakaran Sreekumari,
Parkash Om,
Kumar Devendra,
Sebastian Mailadil Thomas
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.03809.x
Subject(s) - ceramic , microwave , dielectric , analytical chemistry (journal) , materials science , mineralogy , physics , chemistry , metallurgy , optoelectronics , chromatography , quantum mechanics
SrLa 2 Mg 2 W 2 O 12 and Sr 2 La 2 MgW 2 O 12 ceramics were prepared by the conventional solid‐state ceramic route and their dielectric properties were investigated in the radio and microwave frequency regions. SrLa 2 Mg 2 W 2 O 12 sintered at 1500°C has ɛ r =25.2, Q u × f =15 900 GHz (at 4.9 GHz), and τ f =0 ppm/°C. Sr 2 La 2 MgW 2 O 12 sintered at 1525°C has ɛ r =24.7, Q u × f =35 000 GHz (at 4.7 GHz), and τ f =−83 ppm/°C. The dielectric properties of these ceramics are reported for the first time.