Dynamic method for measuring the velocity variation of ultrasound in piezoelectric ceramics with an alternating electric field
作者:
Yasuo Cho,
Fumihiko Matsuno,
期刊:
Review of Scientific Instruments
(AIP Available online 1993)
卷期:
Volume 64,
issue 5
页码: 1244-1247
ISSN:0034-6748
年代: 1993
DOI:10.1063/1.1144124
出版商: AIP
数据来源: AIP
摘要:
The development and application of a new dynamic measuring method of velocity variation of piezoelectric materials, especially of lead zirconate titanate (PZT) ceramics, with an alternating electric field is presented. This method has the following advantages over the conventional static method. (1) The velocity variation due to nonlinear effect is separable from the velocity variation due to temperature change. (2) The adiabatic nonlinear coefficients are obtainable. (3) In spite of the dynamic nature of the method, it fixes the sign of the nonlinear coefficient. (4) Separating the orders of the velocity variation as a function of the applied electric field, each order of coefficients is determinable.
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