Microwave dielectric properties of Ba6-3xSm8+2xTi18O54 solid solutions with Sr substituted for Ba

被引：27

作者：

Imaeda, M ^{[1
]}

Ito, K ^{[1
]}

Mizuta, M ^{[1
]}

Ohsato, H ^{[1
]}

Nishigaki, S ^{[1
]}

Okuda, T ^{[1
]}

机构：

[1] DAIKEN CHEM CO LTD,JOTO KU,OSAKA 573,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1997年 / 36卷 / 9B期

关键词：

microwave dielectric resonator; quality factor q-f; ceramics; (Ba1-alpha Sr alpha)(6-3x)Sm8+2xTi18O54; tungsten bronze-type structure;

D O I：

10.1143/JJAP.36.6012

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have evaluated the effect of substituting Sr cations for Ba cations in solid solutions with a tungsten bronze-type structure used in microwave dielectric resonators. Instead of Ba6-3xSm8+2xTi18O54 solid solutions formula, the structure formula is presented as (Sm8+2xBa2-3x) (Ba-4)Ti18O54 for the range of 0 less than or equal to x less than or equal to 2/3 and (Sm9.33+2(x-2/3)) (Ba4-3(x-2/3))Ti18O54 for 2/3 less than or equal to x less than or equal to 1. The quality factor Q. f has been improved based on the substitution of 0.2 Sr ions for 0.2 Ba ions in perovskite blocks in (Sm9.2Ba0.2)(Ba-4)Ti18O54 where x = 0.6. This composition has the best dielectric quality in the solid solution series, because the substitution reduced the strain caused by the Ba ions. The relationship between the lattice parameters and the microwave dielectric properties is also presented.

引用

页码：6012 / 6015

页数：4

共 24 条

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