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Ba 4 LiNb 3− x Ta x O 12 ( x =0–3): A Series of High‐Q Microwave Dielectrics from the Twinned 8H Hexagonal Perovskites
Author(s) -
Fang Liang,
Li Chunchun,
Peng Xiyang,
Hu Changzheng,
Wu Bolin,
Zhou Huangfu
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.1551-2916.2009.03548.x
Subject(s) - analytical chemistry (journal) , permittivity , hexagonal crystal system , microwave , materials science , temperature coefficient , atmospheric temperature range , solid solution , ceramic , dielectric , crystallography , chemistry , physics , thermodynamics , optoelectronics , chromatography , quantum mechanics , metallurgy , composite material
A series of the twinned 8H hexagonal perovskites in the Ba 4 LiNb 3− x Ta x O 12 ( x =0–3) system were synthesized by the conventional solid‐state reaction method. Ba 4 LiNb 3− x Ta x O 12 solid solutions were single phase in the whole range of x values. The ceramics exhibit perfect microwave dielectric properties with relative permittivity, ɛ r ∼28–37, high quality factor, Q × f ∼37 000–104 000 GHz, and temperature coefficient of resonant frequency, τ f ∼+25–+65 ppm/°C.