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 LuTh3 (Materials Project id mp-973556)

        81       34       34        0        0        0  
        34       81       34        0        0        0  
        34       34       81        0        0        0  
         0        0        0       48        0        0  
         0        0        0        0       48        0  
         0        0        0        0        0       48  

Average properties

Averaging schemeBulk modulusYoung's modulusShear modulusPoisson's ratio
VoigtKV = 49.667 GPaEV = 91.215 GPaGV = 38.2 GPaνV = 0.19391
ReussKR = 49.667 GPaER = 82.798 GPaGR = 33.874 GPaνR = 0.22215
HillKH = 49.667 GPaEH = 87.056 GPaGH = 36.037 GPaνH = 0.20787

Eigenvalues of the stiffness matrix

λ1 λ2 λ3 λ4 λ5 λ6
47 GPa 47 GPa 48 GPa 48 GPa 48 GPa 149 GPa

Variations of the elastic moduli

Young's modulusLinear compressibility Shear modulusPoisson's ratio
EminEmax βminβmaxGminGmax νminνmax
Value 60.896 GPa 108.91 GPa 6.7114 TPa–1 6.7114 TPa–1 23.5 GPa 48 GPa-0.0523040.44171Value
Anisotropy 1.789 1.0000 2.043Anisotropy
Axis 0.0000
1.0000
0.0000
0.5774
0.5774
0.5773
0.0000
0.0000
1.0000
0.4830
0.6294
0.6088
0.7071
0.0001
-0.7071
-0.0000
0.0000
1.0000
0.7071
-0.0003
0.7071
-0.7071
0.0000
0.7071
Axis
-0.7071
-0.0002
-0.7071
-0.7660
0.6428
-0.0000
0.7071
-0.0005
-0.7071
-0.0001
-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