Publication Date:
2019
Description:
Abstract
The dielectric relaxation properties and freezing behavior of polar nanoregions (PNRs) of 0.24Pb(In1/2Nb1/2)O3‐0.47Pb(Mg1/3Nb2/3)O3‐0.29PbTiO3 single crystals have been studied. The Burns temperature TB, permittivity maximum temperature Tm, and freezing temperature Tf were determined, respectively. It was found that the temperature‐dependent dielectric constant can be well described by the Lorenz‐type relationship in the ergodic phase due to the existence of PNRs. The diffuseness factor δ is 〉30 and is basically not dependent on crystal orientation. The frequency dependence of Tm obeys the Vogel‐Fulcher relationship. The residual effect of the poling electric field disappears and the remnant polarization has a sharp decrease near the freezing temperature Tf.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
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