Structural investigations on (BaxSr1-x)(ZryTi1-(y+delta)Ta-delta)O-3 dielectric resonator compounds used for microwave applications

被引:10
作者
Joseph, J
Vimala, TM
Raju, KCJ
Murthy, VRK
机构
[1] Department of Physics, Indian Institute of Technology
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1996年 / 35卷 / 1A期
关键词
microwave dielectric resonator; ceramics; Rietveld analysis; temperature coefficient of resonant frequency; (BaSr)(ZrTi)O-3; crystal structure;
D O I
10.1143/JJAP.35.179
中图分类号
O59 [应用物理学];
学科分类号
摘要
Structural investigations on 4BO(3) type perovskite dielectric resonator (DR) compounds, namely (Ba0.29Sr0.71) (Zr0.973Ti0.027)O-3 [BSZT] and (Ba0.29Sr0.71)(Zr0.951Ti0.039Ta0.01)O-3 [BSZTTa] were carried out using X-ray Rietveld method. The structures were found to be isostructural with SrZrO3 and belong to the space group Pbnm. In both the structures, the tilt angles of the BO6 octahedra were lower than that in SrZrO3. The volume of the octahedron was comparable for all the three. When Ta was substituted in BSZT, dielectric resonator properties of the resulting product BSZTTa improved substantially.
引用
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页码:179 / 181
页数:3
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