[17a-K310-1~9] 15.1 Bulk crystal growth

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[17a-K310-4] Young’s modulus of single-crystal Si20Ge80

〇Yasutomo Arai¹, Shigeki Uchida², Masanori Kusama², Tsuyoshi Kanda², Koji Tsubaki², Yoshifumi Katano², Masami Kataoka³, Shingo Sasaki³, Yasunori Sato³, Okuhisa Matsumura³, Takeo Kobae³, Takuya Kawaski³ (1.JAXA, 2.Topcon, 3.TDY)

Keywords:

silicon germanium,single crystal,elastic constant

The elastic constants of single crystal Si20Ge80 were calculated from the sound velocity measurements. The orientation dependence of the Young's modulus is similar with the modulus of Si and Ge, but the value would be follows Bowing's law rather than Vegard's law. In this report, we also discuss 2D and 3D bulk modulus calculations, shear modulus, and Poisson's ratio.