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 MgAl2O4 (Materials Project id mp-3536)

       252      145      145        0        0        0  
       145      252      145        0        0        0  
       145      145      252        0        0        0  
         0        0        0      142        0        0  
         0        0        0        0      142        0  
         0        0        0        0        0      142  

Average properties

Averaging schemeBulk modulusYoung's modulusShear modulusPoisson's ratio
VoigtKV = 180.67 GPaEV = 267.24 GPaGV = 106.6 GPaνV = 0.25347
ReussKR = 180.67 GPaER = 221.45 GPaGR = 85.456 GPaνR = 0.29571
HillKH = 180.67 GPaEH = 244.72 GPaGH = 96.028 GPaνH = 0.27424

Eigenvalues of the stiffness matrix

λ1 λ2 λ3 λ4 λ5 λ6
107 GPa 107 GPa 142 GPa 142 GPa 142 GPa 542 GPa

Variations of the elastic moduli

Young's modulusLinear compressibility Shear modulusPoisson's ratio
EminEmax βminβmaxGminGmax νminνmax
Value 146.08 GPa 337.56 GPa 1.845 TPa–1 1.845 TPa–1 53.5 GPa 142 GPa-0.104770.63568Value
Anisotropy 2.311 1.0000 2.654Anisotropy
Axis 0.0000
0.0000
1.0000
0.5774
0.5774
0.5773
0.2500
0.9330
0.2588
-0.5272
0.6871
0.5000
0.7071
0.0001
-0.7071
0.0000
0.0000
1.0000
0.7071
0.0001
-0.7071
0.0000
0.7071
0.7071
Axis
-0.7071
-0.0002
-0.7071
0.9397
0.3420
-0.0000
-0.7071
-0.0002
-0.7071
-1.0000
0.0000
-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