Journal of Applied Sciences ›› 1996, Vol. 14 ›› Issue (4): 457-462.
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ZHANG YIBING1, WANG BO1, JIN BIANJUN1, CHENG DAREN2
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Abstract: The dielectric constant ε of Pb(Fe1/2Nb1/2)O3-Ph(Fe2/3W1/3)O3 binary system has been measured at high hydrostatic pressures from 0 to 14kbar and temperature from -190℃ to 100℃. The experimental results indicate that temperature and pressure-induced phase transitions are diffused. With increasing pressure, the phase transition temperature Tm drops linearly with dTm/dP=-3.1℃/kbar, maximum permittivity εmax decreases, and the diffusion degree of the phase transition increases. These properties of diffused phase transition at high pressure are discussed phenomenologically in this paper.
Key words: high pressure, ferroelectrics, diffused phase transition
ZHANG YIBING, WANG BO, JIN BIANJUN, CHENG DAREN. HIGH PRESSURE EFFECTS ON THE DIFFUSED PHASE TRANSITION OF Pb (Fe1/2Nb1/2)O3-Pb(Fe2/3W1/3)O3 CERAMIC[J]. Journal of Applied Sciences, 1996, 14(4): 457-462.
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https://www.jas.shu.edu.cn/EN/Y1996/V14/I4/457
