High temperature hardness of bulk single crystal GaN

I. Yonenaga, T. Hoshi, A. Usui

研究成果: Article査読

4 被引用数 (Scopus)


The hardness of single crystal GaN (gallium nitride) at elevated temperature is measured for the first time and compared with other materials. A Vickers indentation method was used to determine the hardness of crack-free GaN samples under an applied load of 0.5N in the temperature range 20-1200°C. The hardness is 10.8 GPa at room temperature, which is comparable to that of Si. At elevated temperatures GaN shows higher hardness than Si and GaAs. A high mechanical stability for GaN at high temperature is deduced.

ジャーナルMaterials Research Society Symposium - Proceedings
出版ステータスPublished - 2000 12月 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学


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