[Pw_forum] elestic constant for Hexagonal

[ali kazempour]

Dear All
Has anyone suitable reference about elastic constant matrix for Hexagonal lattice .
In principle does this elastic constants differ in each Hexagonal shape crystals?( I mean for example between NiAs-type material that has Hexagonal lattice and  HCP lattice )  .
Another question: is any reffernce about how to connect the elestic constant of Hexagonal to phonon frequency?
Thanks a lot

Ali Kazempour







Fritz-Haber-Institut              fax   : ++49-30-8413 4701

der Max-Planck-Gesellschaft

Faradayweg 4-6                    e-mail: kazempou at fhi-berlin.mpg.de

D-14 195 Berlin-Dahlem / German


      
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