Fine-tolerance resonator applications of bismuth-layer-structured ferroelectric ceramics

被引：46

作者：

Ando, A ^{[1
]}

Sawada, T ^{[1
]}

Ogawa, H ^{[1
]}

Kimura, M ^{[1
]}

Sakabe, Y ^{[1
]}

机构：

[1] Murata Mfg Co Ltd, Kyoto 6178555, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2002年 / 41卷 / 11B期

关键词：

SrBi2Nb2O9; SBN; bismuth layer-structured ferroelectric ceramics; second harmonic of the thickness extensional; vibration; TE2; fine tolerance resonator; oriented BLSF; thickness shear vibration;

D O I：

10.1143/JJAP.41.7057

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The two-layered SrBi2Nb2O9 (SBN) ceramic resonator that generates second harmonics of the thickness extensional vibration is a strong candidate for fine-tolerance-resonator applications, because of its small electromechanical coupling coefficient and high temperature stability. The Nd substitution of Sr in SBN is effective in further decreasing the temperature coefficient of resonance frequency (TCF) while maintaining its high maximum value of electrical quality factor (Q(emax)) at a resonance frequency. On the other hand, a grain-oriented SBN-type ceramic resonator has an attractive property of thickness shear vibration. The temperature coefficient of oscillation frequency (TCO) could be less than 10 ppm/degreesC in an ordinary oscillation circuit with grain-oriented SBN-type ceramics. In this paper, we describe how a fine tolerance resonator can be realized using compositional and structural designs of the bismuth-layer-structured ferroelectric (BLSF) ceramic resonator, [DOI:10.11435JAP.41.7057].

引用

页码：7057 / 7061

页数：5