Experimental study of piezoelectric coefficient of ferroelectric materials

guo shu-guang; zhang shu-ren; cheng zhong-dao

Volume 17 Issue 10

Oct. 2005

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guo shu-guang, zhang shu-ren, cheng zhong-dao. Experimental study of piezoelectric coefficient of ferroelectric materials[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

guo shu-guang, zhang shu-ren, cheng zhong-dao. Experimental study of piezoelectric coefficient of ferroelectric materials[J]. High Power Laser and Particle Beams, 2005, 17.

guo shu-guang, zhang shu-ren, cheng zhong-dao. Experimental study of piezoelectric coefficient of ferroelectric materials[J]. High Power Laser and Particle Beams, 2005, 17.

Citation:

guo shu-guang, zhang shu-ren, cheng zhong-dao. Experimental study of piezoelectric coefficient of ferroelectric materials[J]. High Power Laser and Particle Beams, 2005, 17.

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Experimental study of piezoelectric coefficient of ferroelectric materials

1.
Institute of Microelectronics and Solid-electronics,University of Electronic Science and Technology of China,Chengdu 610054,China

Publish Date: 2005-10-15

Abstract

Abstract

The ferroelectric cathode material is a new kind of functional material. A new electron emission phenomena was observed by chance. With the increase of emission times, the piezoelectric coefficient decreased to zero firstly and then gradually approached to a given inverse value, whose absolute value was less than that of the initial value. Surprisingly, it was found that the current emission density had not changed during the course of the change of the piezoelectric coefficient. It is found that the experiment is repeatable.It is difficult to explain the observed phenomena using the existing electron emission theory.
- piezoelectric coefficient,
- electron emission,
- ferroelectric cathode material,
- theoretical explain

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