Elastic constants of orthorhombic KNbO3 by X-ray diffuse scattering
Elastic constants of orthorhombic KNbO3 by X-ray diffuse scattering
复制标题
X 射线漫散射法测定斜方 KNbO3 的弹性常数
DOI：
10.1107/s0567739472000622
复制
发表时间：
1972
期刊：
影响因子：
--
通讯作者：
E. Subbarao
中科院分区：
文献类型：
--
作者：
S. D. Phatak;R. Srivastava;E. Subbarao
用006、040和600漫反射衍射研究了斜方晶系钛酸钾（空间群Bmm ~ 2）在室温下的全部9个弹性常数。以1012达因·cm-2为单位的弹性常数的值为：C11 = 0.354，C22 = 0.516，C33= 0.632，C44 = 3.558，C55 = 3.651，C66 = 2.069，C12 = −1.058，C23 = −1.914，C13 = −2.027。用这些弹性常数计算了等散射等值线和K面。
All nine elastic constants of orthorhombic potassium niobate (space group Bmm2) have been determined at room temperature from a diffractometric study of 006, 040 and 600 diffuse reflexions. The values of the elastic constants in units of 1012 dynes.cm−2 are: C11 = 0.354, C22 = 0.516, C33= 0.632, C44 = 3.558, C55 = 3.651, C66 = 2.069, C12 = −1.058, C23 = −1.914, C13 = −2.027. Equiscattering contours and K surfaces have been calculated using these values of the elastic constants.