A temperature change in elastic and acoustic properties of auricupride

International Conference on Mechanical Engineering, Automation and Control Systems 2015

机械制造;无线电电子学;计算机科学

Tesleva, E.P.^1 ; Sorokin, B.P.^2,3

Yurga Institute of Technology of National Research Tomsk Polytechnic University, 26, Leningrad st., Yurga

652050, Russia^1

Moscow Institute of Physics and Technology, 9, Institute st., Dolgoprudny

141700, Russia^2

Technological Institute for Superhard and Novel Carbon Materials, 7a, Central st., Moscow, Troitsk

142190, Russia^3

关键词: Crystallographic directions;    Elastic properties;    High temperature;    Longitudinal elastic wave;    Order disorder phase transitions;    Temperature changes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/124/1/012144/pdf
DOI  :  10.1088/1757-899X/124/1/012144

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Changes in acoustic and elastic properties of auricupride approach within the high temperature interval and close to an order-disorder phase transition have been discussed. Calculations of the phase velocities of purely transverse and longitudinal elastic waves, elastic moduli and Poisson's ratios based on elastic constants cij(T) of the crystal have been executed. Temperature changes of Grüneisen parameter along crystallographic directions [100], [110] and [111] have been defined.