Effect of Critical External Influences on the Electrophysical Properties of a Ferro-Piezo-Electric Ceramic Material Base
- PDF / 554,303 Bytes
- 3 Pages / 612 x 792 pts (letter) Page_size
- 45 Downloads / 182 Views
ct of Critical External Influences on the Electrophysical Properties of a Ferro-Piezo-Electric Ceramic Material Based on the PZT–PMN–PZN + SiO2 System K. P. Andryushina, *, I. N. Andryushinaa, Kh. A. Sadykova, b, A. V. Nagaenkoc, and L. A. Reznichenkoa aResearch
Institute of Physics, Southern Federal University, Rostov-on-Don, 344090 Russia Faculty of Physics and Information Technology, Chechen State University, Grozny, 364024 Russia c Institute of High Technologies and Piezotechnology, Southern Federal University, Rostov-on-Don, 344090 Russia *e-mail: [email protected] b
Received March 19, 2020; revised April 10, 2020; accepted May 27, 2020
Abstract—Results are presented from studying industrially produced ferro-piezoelectric ceramic material PСR-80 based on the PbTiO3–PbZrO3–PbNb2/3Mn1/3O3–PbNb2/3Zn1/3O3 + SiO2 system. Patterns of changes in its reverse nonlinearity, inverse piezoelectric effect, and the electromechanical and dielectric hysteresis of the amplitude of a constant electric field are established. DOI: 10.3103/S106287382009004X
INTRODUCTION Dynamic processes (e.g., acoustic and variable pressures, vibration, and consumption of mass) are currently monitored using devices based on ferropiezoelectric ceramic materials (FPCMs). These are usually employed under critical conditions (e.g., when there is variation in a broad range of temperatures, linear acceleration, quasi-static and dynamic pressures, and the intensity of a constant electric field). However, there are virtually no data on the characteristics of FPCMs under these conditions, making it difficult to determine their practical applicability in many important devices (e.g., frequency-selective systems, varactors, and piezo-transformers) [1–3]. The aim of this work was to determine the effect critical external influences (temperature and/or a constant electric field) have on the macroresponse of FPCMs based on the multicomponent system PZT– PMN–PZN + SiO2 (PCR-80 piezoceramics Rostovskaya, group 3) [4]. Its piezoelectric parameters are highly stable, making it promising for use in midband filters. EXPERIMENTAL Our object of study was FPCM based on the PbTiO3–PbZrO3–PbNb2/3Mn1/3O3–PbNb2/3Zn1/3O3 + SiO2 system [5], fabricated via two-step solid-phase synthesis with subsequent sintering using conventional ceramic technology (Тsyn1 = 1123 K, Тsyn2 = 1143 K, τ1= τ2 = 6 h, Tsin = 1410 K, τ = 2 h). Specimens were polarized via hot polarization. They were loaded into a chamber with PES-5 polyethylenesilox-
ane liquid at ~300 K, and the temperature was gradually raised to 423 K over 0.5 h while increasing the generated field from 0 to 3.2–3.6 kV/mm. The specimens were held under these conditions for 20–25 min and then cooled in fields of up to ~300 K (room temperature). The microstructure of chips of the specimens was studied on a JSM-6390L scanning electron microscope (Japan) equipped with a system of microanalyzers from Oxford Instruments (United Kingdom). The microscope’s resolution was a high as 1.2 nm at an accelerating voltage of 30 kV (with
Data Loading...
