| Issue |
MATEC Web Conf.
Volume 329, 2020
International Conference on Modern Trends in Manufacturing Technologies and Equipment: Mechanical Engineering and Materials Science (ICMTMTE 2020)
|
|
|---|---|---|
| Article Number | 02037 | |
| Number of page(s) | 6 | |
| Section | Materials Science | |
| DOI | https://doi.org/10.1051/matecconf/202032902037 | |
| Published online | 26 November 2020 | |
Temperature Dependences of Structural Parameters of PMN in the Region of Diffuse Phase Transition
1 Academy of Architecture and Arts SFU, 39 Budennovskiy Av., Rostov-on-Don, 344002, Russia
2 Department of Physics SFU, 5, Zorge St., Rostov-on-Don, 344090, Russia
* Corresponding author: lebed1989@rambler.ru
In this work, we analyzed the structural parameters of the lead magnoniobate sample in the temperature range from 20 ºC to 450 ºC by X- ray structural analysis. It was found that the PMN cubic perovskite cell does not undergo distortions over the entire temperature range under study. In the vicinity of a temperature of 250 ºC in PMN, an abrupt decrease in the coefficient of linear expansion from 1.06∙10-5 K-1 to 0.32∙10-5 K-1, which is possibly associated with a change in the anharmonicity of the potential relief of atoms in the structure, is recorded.
© The Authors, published by EDP Sciences, 2020
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