Volume 124, Number 5, December 2018
|Number of page(s)||4|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||27 December 2018|
Detecting the Burns temperature in Na0.5Bi0.5TiO3-xBaTiO3 lead-free relaxor ferroelectrics by means of acoustic emission
Department of Applied Physics, The Hebrew University of Jerusalem - Jerusalem 91904, Israel
Received: 7 June 2018
Accepted: 12 November 2018
Na0.5Bi0.5TiO3-xBaTiO3 ceramics samples (0 < x < 0.8) were studied by means of an acoustic emission method. The characteristic temperatures such as the Burns temperature, TB, the transition to paraelectric phase, Tp, the temperature maximum of the dielectric constant, Tm, and the intermediate temperature, were detected and their dependences on x were plotted. Based on the comparison of the obtained data with the previously published ones, it is shown that the Burns temperature, TB, cannot be reliably determined by the deviation of the reverse dielectric constant, , from a straight line.
PACS: 77.80.Jk – Relaxor ferroelectrics / 77.80.B- – Phase transitions and Curie point / 43.40.Le – Techniques for nondestructive evaluation and monitoring, acoustic emission
© EPLA, 2018
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