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 CdInGaS4 (Materials Project id mp-624929)

        58       26       38       -4        0        0  
        26       58       38        4        0        0  
        38       38       13        0        0        0  
        -4        4        0       17        0        0  
         0        0        0        0       17       -4  
         0        0        0        0       -4       16  

Average properties

Averaging schemeBulk modulusYoung's modulusShear modulusPoisson's ratio
VoigtKV = 37 GPaEV = 31.998 GPaGV = 11.8 GPaνV = 0.35586
ReussKR = 42.762 GPaER = 86.615 GPaGR = 37.257 GPaνR = 0.16241
HillKH = 39.881 GPaEH = 61.066 GPaGH = 24.528 GPaνH = 0.2448

Eigenvalues of the stiffness matrix

λ1 λ2 λ3 λ4 λ5 λ6
-15.907 GPa 12.469 GPa 15.106 GPa 20.531 GPa 33.894 GPa 112.91 GPa
Stiffness matrix is not definite positive, crystal is mechanically unstable
No further analysis will be performed.