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Effects of ZnO–B 2 O 3 Addition on the Microstructure and Microwave Properties of Low‐Temperature Sintered Barium Strontium Titanate ( BST ) Thick Films
Author(s) -
Kohler Christian,
Friederich Andreas,
Sazegar Mohsen,
Nikfalazar Mohammad,
Stemme Florian,
Wang Di,
Kuebel Christian,
Jakoby Rolf,
Binder Joachim R.
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12116
Subject(s) - materials science , microstructure , sintering , amorphous solid , microwave , composite number , dielectric , strontium , composite material , relative permittivity , ceramic , mineralogy , permittivity , optoelectronics , crystallography , chemistry , physics , quantum mechanics , nuclear physics
BST –ZnO–B 2 O 3 –composite thick films have been investigated regarding their suitability as low‐temperature sintered tunable microwave dielectrics. The investigations showed that already a small amount of Z nO–B 2 O 3 additive can remarkably reduce the sintering temperature down to 900°C. Microstructural investigations of the thick films revealed the formation of an amorphous intergranular phase and a clustering of particles for high additive amounts. The microwave characterization showed a reduction in relative permittivity, dielectric loss, and tunability of the thick films with increasing additive content. These results demonstrate the potential to tailor the material abilities by varying the additive content.