X-ray and mechanical elastic constants for hexagonal system by Kröner model

Crystal system: hexagonal, default values are siffness for α-Ti taken from E.S. Fisher and C.J. Renken, Physical Review,135, No.2A, A482-A494 (1964).
c11 c12 c13 c33 c44
c/a
h k l

This cgi system was made by K. Suzuki, Niigata University.(mail:suzuki@ed.niigata-u.ac.jp)

References
Mg (GPa): c11=59.40, c12=25.61, c13=21.44, c33=61.60, c44=16.40, c/a=1.623.
Ref: LJ. Slutsky and C.W. Garland, Physical Review, 107, No. 4, pp. 972-976 (1957).
β-Si3N4 (GPa): c11=439, c12=166, c13=142, c33=494, c44=106, c/a=0.383.
Ref: K. Tanaka, K. Suzuki, Y. Sakaida, H. Kimachi and Y. Akiniwa, Materials Science Research Inetrnational, 6, No. 4, pp. 249-254 (2000).
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