Physics of the Solid State
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Linear coefficient of thermal expansion and Debye temperature of PbTe at high temperatures
Sharov M. K.1
1Voronezh State University, Voronezh, Russia
Email: sharov-mk@mail.ru

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The linear coefficient of thermal expansion and the Debye temperature of PbTe in the high-temperature range have been investigated using X-ray diffractometry. The studies were carried out on samples of two types: single crystal and PbTe powder, synthesized separately. Both types of samples showed fairly similar results in all measurements. It has been established that in the temperature range 293-773 K the linear thermal expansion coefficient is constant and for powder: α=20.1· 10-6± 0.9· 10-6 K-1 and for single crystal: α=19.7· 10-6± 0.8· 10-6 K-1. The Debye temperature measured in the temperature range 293-573 K equal to 105±3 K Keywords: lead telluride, linear thermal expansion coefficient, Debye temperature.
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