Origin of extra diffraction spots for high crystalline alpha-Ga2O3
Yong-Hee Lee,
Duyoung Yang,
Byeongjun Gil,
Mi-Hyang Sheen,
Euijoon Yoon,
Yongjo Park,
Ho-Won Jang,
Sangmoon Yoon,
Miyoung Kim,
Young-Woon Kim
Affiliations
Yong-Hee Lee
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Duyoung Yang
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Byeongjun Gil
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Mi-Hyang Sheen
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Euijoon Yoon
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Yongjo Park
Advanced Institute of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea
Ho-Won Jang
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Sangmoon Yoon
Department of Physics, Gachon University, Seougnam Gyeonggi-do 13120, Republic of Korea
Miyoung Kim
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
Young-Woon Kim
Department of Materials Science and Engineering, and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
This work has investigated the microstructure characteristics of high-quality alpha-Ga2O3 thin film grown on the Al2O3 single crystal substrate membrane. Hetero-epitaxial alpha Ga2O3 crystals reveal the formation of a three-fold symmetry at the initial stage of the growth by the oxygen template provided by the Al2O3. Inversion domains are found, and they have a 180° inverted configuration from the surroundings. These IDs lead to extra diffraction spots when observed along [110] and [010].
