Evaluation of the four elastic constants of some cubic crystals

1955 ◽  
Vol 42 (3) ◽  
pp. 111-130 ◽  
Author(s):  
C. V. Raman ◽  
D. Krishnamurti
Keyword(s):  
Elastic Constants ◽  
Cubic Crystals

The dislocations contrast factors of cubic crystals in the Zener constant range between zero and unity

2002 ◽  
Vol 17 (2) ◽  
pp. 104-111 ◽  
Author(s):  
I. C. Dragomir ◽  
T. Ungár
Keyword(s):  
Elastic Constants ◽  
Elastic Anisotropy ◽  
Profile Analysis ◽  
Anisotropy Constant ◽  
Diffraction Peak ◽  
Polycrystalline Materials ◽  
Ionic Crystals ◽  
Strain Anisotropy ◽  
Cubic Crystals ◽  
Lattice Distortions

Diffraction peak profiles broaden due to the smallness of crystallites and the presence of lattice defects. Strain broadening of powders of polycrystalline materials is often anisotropic in terms of the hkl indices. This kind of strain anisotropy has been shown to be well interpreted assuming dislocations as one of the major sources of lattice distortions. The knowledge of the dislocation contrast factors are inevitable for this interoperation. In a previous work the theoretical contrast factors were evaluated for cubic crystals for elastic constants in the Zener constant range 0.5≤Az≤8. A large number of ionic crystals and many refractory metals have elastic anisotropy, Az, well below 0.5. In the present work the contrast factors for this lower anisotropy-constant range are investigated. The calculations and the corresponding peak profile analysis are tested on ball milled PbS and Nb and nanocrystalline CeO2.

Elastic constants of cubic crystals

2014 ◽  
Vol 95 ◽  
pp. 592-599 ◽  
Author(s):  
M. Jamal ◽  
S. Jalali Asadabadi ◽  
Iftikhar Ahmad ◽  
H.A. Rahnamaye Aliabad
Keyword(s):  
Elastic Constants ◽  
Cubic Crystals

Dislocation Contribution to the Elastic Constants of Body-Centered Cubic Crystals

1962 ◽  
Vol 127 (2) ◽  
pp. 501-502 ◽  
Author(s):  
Bal Krishna Agrawal ◽  
G. S. Verma
Keyword(s):  
Elastic Constants ◽  
Body Centered Cubic ◽  
Cubic Crystals
Sign in / Sign up

Export Citation Format

Share Document