High-frequency broadband transducers of ultrasonic oscillations

被引：0
|
作者：
Sarnatskii, V. M. [2 ]
Nedbai, A. I. [2 ]
Sarnatskii, V. V. [1 ]
机构：
[1] OOO Polifon, Petrodvorets, St Petersburg 198504, Russia
[2] St Petersburg State Univ, Fok Inst Phys, Fac Phys, St Petersburg 198504, Russia
来源：
ACOUSTICAL PHYSICS | 2009年 / 55卷 / 01期
关键词：
PULSE;
D O I：
10.1134/S1063771009010175
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The amplitude-frequency responses (AFRs) of ultrasonic oscillation transducers based on piezoelectric lithium iodate crystals of hexagonal modification and on magnetic soft ferrite powders are experimentally studied. The possibility to control the efficiency of magnetostriction powder transducers (MPTs) by variation in the value and orientation of the external magnetic field is shown. Results of measurements of the transformation efficiency for ferrites of various chemical compositions are presented.
引用
收藏
页码：143 / 145
页数：3
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