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Table 2 The value of elastic stiffness tensor elements C i j

From: Investigation of cracks in GaN films grown by combined hydride and metal organic vapor-phase epitaxial method

  C xx (Gpa) C xy (Gpa) C xz (Gpa) C zz (Gpa) References
GaN 374 106 70 379 [26]
Al2O3 409.2 165.4 113.0 490.2 [27]