Temperature dependence of piezoelectric properties for textured SBN ceramics.
Temperature dependences of piezoelectric properties were studied for h001i textured ceramics of bismuth layer-structured ferroelectrics, SrBi(2)Nb(2)O(9) (SBN). The textured ceramics with varied orientation degrees were fabricated by templated, grain-growth method, and the temperature dependences of resonance frequency were estimated. Excellent temperature stability of resonance frequency was obtained for the 76% textured ceramics. The resonance frequency of the 76% textured specimens varied almost linearly over a wide temperature range. Therefore, the variation was slight, even in a high temperature region above 150 degrees C. Temperature stability of a quartz crystal oscillator is generally higher than that of a ceramic resonator around room temperature. The variation of resonance frequency for the 76% textured SrBi(2)Nb(2)O(9) was larger than that of oscillation frequency for a typical quartz oscillator below 150 degrees C also in this study. However, the variation of the textured SrBi(2)Nb(2)O(9) was smaller than that of the quartz oscillator over a wide temperature range from -50 to 250 degrees C. Therefore, textured SrBi(2)Nb(2)O(9) ceramics is a major candidate material for the resonators used within a wide temperature range.
Kimura
Masahiko
M
Murata Manufacturing Company Ltd., Kyoto, Japan. mkimura@murata.co.jp
Ogawa
Hirozumi
H
Kuroda
Daisuke
D
Sawada
Takuya
T
Higuchi
Yukio
Y
Takagi
Hiroshi
H
Sakabe
Yukio
Y
D000162:Acoustics / Q000295:instrumentation*; D002516:Ceramics / Q000737:chemistry*; D017097:Electric Impedance; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013499:Surface Properties; D013696:Temperature; D014159:Transducers