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Effects of Alkaline‐Earth‐Metal Addition on the Sinterability and Microwave Characteristics of (Zr,Sn)TiO 4 Dielectrics
Author(s) -
Kim DukJun,
Hahn JinWoo,
Han GeePyeong,
Lee SangSeok,
Choy TaeGoo
Publication year - 2000
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.1151-2916.2000.tb01321.x
Subject(s) - alkaline earth metal , strontium , barium , dielectric , materials science , magnesium , mineralogy , analytical chemistry (journal) , microwave , scanning electron microscope , grain boundary , metal , metallurgy , inorganic chemistry , microstructure , composite material , chemistry , optoelectronics , environmental chemistry , physics , organic chemistry , quantum mechanics
The sinterability and microwave dielectric properties of (Zr 0.8 Sn 0.2 )TiO 4 with additions of 1 mol% of magnesium, calcium, strontium, or barium were examined. All the alkaline‐earth metals were effective for densification, and the order of effectiveness was as follows: Mg < Ca < Sr < Ba. The dielectric constant and the temperature coefficient of the resonant frequency were not influenced very much by the additives; however, a strong deterioration of the quality factor ( Q ) did occur when magnesium was added. The presence of grain‐boundary phases was confirmed via microstructural observation, using transmission electron microscopy. In addition, energy‐dispersive X‐ray analysis was performed to investigate the cause of the deterioration in the Q value.