ELATE: Elastic tensor analysis

Welcome to ELATE, the online tool for analysis of elastic tensors, developed by Romain Gaillac and Fran├žois-Xavier Coudert at CNRS / Chimie ParisTech.
If you use the software in published results (paper, conference, etc.), please cite the corresponding paper (J. Phys. Condens. Matter, 2016, 28, 275201) and give the website URL.

ELATE is open source software. Any queries or comments are welcome at

Summary of the properties

Input: stiffness matrix (coefficients in GPa) of GaSb (Materials Project id mp-1156)

        74       30       30        0        0        0  
        30       74       30        0        0        0  
        30       30       74        0        0        0  
         0        0        0       37        0        0  
         0        0        0        0       37        0  
         0        0        0        0        0       37  

Average properties

Averaging schemeBulk modulusYoung's modulusShear modulusPoisson's ratio
VoigtKV = 44.667 GPaEV = 75.527 GPaGV = 31 GPaνV = 0.21818
ReussKR = 44.667 GPaER = 71.666 GPaGR = 29.071 GPaνR = 0.23259
HillKH = 44.667 GPaEH = 73.608 GPaGH = 30.036 GPaνH = 0.22534

Eigenvalues of the stiffness matrix

λ1 λ2 λ3 λ4 λ5 λ6
37 GPa 37 GPa 37 GPa 44 GPa 44 GPa 134 GPa

Variations of the elastic moduli

Young's modulusLinear compressibility Shear modulusPoisson's ratio
EminEmax βminβmaxGminGmax νminνmax
Value 56.692 GPa 86.982 GPa 7.4627 TPa–1 7.4627 TPa–1 22 GPa 37 GPa0.0369330.39043Value
Anisotropy 1.534 1.0000 1.682 10.5714Anisotropy
Axis 0.0000
0.0000
1.0000
0.5774
0.5774
0.5773
0.8365
0.4830
0.2588
0.0000
0.0000
1.0000
0.7071
-0.0003
0.7071
0.0000
0.0000
1.0000
0.7071
-0.0002
0.7071
-0.7071
-0.0000
0.7071
Axis
0.7071
-0.0005
-0.7071
-0.9397
-0.3420
0.0000
0.7071
-0.0006
-0.7071
0.0000
-1.0000
-0.0000
Second axis

Spatial dependence of Young's modulus



Young's modulus in (xy) plane

Young's modulus in (xz) plane

Young's modulus in (yz) plane

Spatial dependence of linear compressibility



linear compressibility in (xy) plane

linear compressibility in (xz) plane

linear compressibility in (yz) plane

Spatial dependence of shear modulus



Shear modulus in (xy) plane

Shear modulus in (xz) plane

Shear modulus in (yz) plane

Spatial dependence of Poisson's ratio



Poisson's ratio in (xy) plane

Poisson's ratio in (xz) plane

Poisson's ratio in (yz) plane