Elastic Constants of Strontium Fluoride Between 4.2 and 300°K
Elastic Constants of Strontium Fluoride Between 4.2 and 300°K
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氟化锶在 4.2 至 300°K 之间的弹性常数
DOI：
10.1103/physrev.136.a1366
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发表时间：
1964
期刊：
影响因子：
--
通讯作者：
D. Gerlich
中科院分区：
文献类型：
--
作者：
D. Gerlich
The elastic constants of single-crystal Sr${\mathrm{F}}_{2}$ have been determined over the temperature range 4.2-300\ifmmode^\circ\else\textdegree\fi{}K, by an ultrasonic pulse-echo technique. The values of the elastic constants, extrapolated to 0\ifmmode^\circ\else\textdegree\fi{}K, in units of ${10}^{11}$ dyn/${\mathrm{cm}}^{2}$, are: ${c}_{11}=12.88$, ${c}_{12}=4.748$, and ${c}_{44}=3.308$. From these values, a Debye temperature of 380\ifmmode^\circ\else\textdegree\fi{}K is calculated for Sr${\mathrm{F}}_{2}$ at 0\ifmmode^\circ\else\textdegree\fi{}K. The elastic constants of Sr${\mathrm{F}}_{2}$ are computed theoretically from a rigid-ion model, and the results are compared with the experimentally measured values. The elastic constants of Sr${\mathrm{F}}_{2}$ are compared with those of the other alkaline-earth fluorides.
The elastic constants of single-crystal Sr${\mathrm{F}}_{2}$ have been determined over the temperature range 4.2-300\ifmmode^\circ\else\textdegree\fi{}K, by an ultrasonic pulse-echo technique. The values of the elastic constants, extrapolated to 0\ifmmode^\circ\else\textdegree\fi{}K, in units of ${10}^{11}$ dyn/${\mathrm{cm}}^{2}$, are: ${c}_{11}=12.88$, ${c}_{12}=4.748$, and ${c}_{44}=3.308$. From these values, a Debye temperature of 380\ifmmode^\circ\else\textdegree\fi{}K is calculated for Sr${\mathrm{F}}_{2}$ at 0\ifmmode^\circ\else\textdegree\fi{}K. The elastic constants of Sr${\mathrm{F}}_{2}$ are computed theoretically from a rigid-ion model, and the results are compared with the experimentally measured values. The elastic constants of Sr${\mathrm{F}}_{2}$ are compared with those of the other alkaline-earth fluorides.