Study of Deterioration in a Piezoelectric Lead Zirconate Titanate Radiation Detector through Measurement of the Electromechanical Coupling Factor with 400 MeV/n Zenon Ions

In this investigation, we extend our previous works to improve piezoelectric properties of Pb(Zr,Ti)O3 ceramics. Modified lead zirconate titanate (PZT) piezoceramics with a composition Zr/Ti=53/47 containing a trace of mixing dopants were prepared by conventional ceramic technology sintering powder compacts. Replacement of (Zr, Ti)+4 by Nb+5, Pb+2 by Sb+3 and Mn+4 in PZT perovskite type solid solutions was accomplished by the creation of cation and anion vacancies. Modified ceramics were explored as a function of firing temperature to acquire exceedingly good piezoelectric characterizations. From the analysis results, calcined at 850°C for 2 h, and then sintered at 1280°C for 2 h, PZT piezoceramic showed the larger dielectric constant er 2013, mechanical quality factor Qm 120 and maximum electromechanical coupling factor kp 0.67. Besides, the bulk ceramic grains distribution were found to be uniform. Furthermore, the sample was found to possess piezoelectric properties, the resonance frequency being about 200 KHz suitable for acoustic sensor.

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Piezoelectric Thin Film Ultrasonic Micromotors

MRS Proceedings ◽

10.1557/proc-243-49 ◽

1991 ◽

Vol 243 ◽

Cited By ~ 12

Author(s):

K. R. Udayakumar ◽

J. Chen ◽

K. G. Brooks ◽

L. E. Cross ◽

A. M. Flynn ◽

...

Keyword(s):

Thin Films ◽

Lead Zirconate Titanate ◽

Electromechanical Coupling ◽

Breakdown Strength ◽

Relative Dielectric Constant ◽

Electromechanical Coupling Factor ◽

Lead Zirconate ◽

Coupling Factor ◽

New Family ◽

Piezoelectric Thin Film

AbstractThin films of lead zirconate titanate have been fabricated for application to a new family of flexure-wave piezoelectric micromotors that are characterized by low speed and high torque. The high relative dielectric constant and breakdown strength of the films lead to high stored energy densities. Evaluation of the film as a bimorph yielded a value of -88 pC/N for the transverse piezoelectric strain coefficient, d31; the relevant electromechanical coupling factor, k31, calculated thereupon was 0.22. The development of the piezoelectric ultrasonic micromotors from the PZT thin films, and the architecture of the stator structure are described. Nonoptimized prototype micromotors show rotational velocities of 100-300 rpm at drives of 3-5 V.

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Radiation detector based on piezoelectric lead zirconate titanate material

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2007.11.048 ◽

2008 ◽

Vol 586 (2) ◽

pp. 309-313 ◽

Cited By ~ 14

Author(s):

Seiji Takechi ◽

Takashi Miyachi ◽

Masayuki Fujii ◽

Nobuyuki Hasebe ◽

Kunishiro Mori ◽

...

Keyword(s):

Lead Zirconate Titanate ◽

Radiation Detector ◽

Lead Zirconate ◽

Zirconate Titanate ◽

Piezoelectric Lead Zirconate Titanate

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Study of the characteristics of a piezoelectric lead zirconate titanate radiation detector using a pulsed xenon source

Journal of Applied Physics ◽

10.1063/1.3373383 ◽

2010 ◽

Vol 107 (10) ◽

pp. 104902 ◽

Cited By ~ 7

Author(s):

Takashi Miyachi ◽

Masayuki Fujii ◽

Nobuyuki Hasebe ◽

Osamu Okudaira ◽

Seiji Takechi ◽

...

Keyword(s):

Lead Zirconate Titanate ◽

Radiation Detector ◽

Lead Zirconate ◽

Zirconate Titanate ◽

Piezoelectric Lead Zirconate Titanate

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Electrothermal Phenomena in Ferroelectrics

Actuators ◽

10.3390/act9040093 ◽

2020 ◽

Vol 9 (4) ◽

pp. 93

Author(s):

Kenji Uchino

Keyword(s):

Thermal Diffusivity ◽

Lead Zirconate Titanate ◽

Electromechanical Coupling ◽

Short Circuit ◽

Electromechanical Coupling Factor ◽

Lead Zirconate ◽

Coupling Factor ◽

Open Circuit ◽

Comprehensive Knowledge ◽

Poling Direction

Physical properties of lead-zirconate-titanate (PZT) ceramics change according to the initial electric poling process and electrical boundary conditions. This paper reports the electrothermal, piezothermal, and piezoelectric coupling phenomena in ferroelectrics from thermodynamics viewpoints, in particular, thermal property differences between unpoled and poled PZT’s in the poling direction for open circuit and short circuit conditions. We propose a new terminology, “secondary electrothermal” coupling factor kλ, which is analogous to the electromechanical coupling factor k, relating the elastic compliances under short- and open-circuit conditions, in order to explain the fact that the short-circuit condition exhibited the larger thermal diffusivity than the open-circuit condition. On the other hand, the unpoled specimen exhibits the lowest thermal diffusivity. This tutorial paper was authored for providing comprehensive knowledge on equilibrium and time-dependent thermodynamics in ferroelectrics.

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