기계적으로 연마한 GaN 분말로부터 열처리로 합성된 ${\beta}-Ga_2O_3$ 나노물질

${\beta}-Ga_2O_3$ Nanomaterials Synthesized from Mechanically Ground GaN Powders by a Thermal Annealing

${\beta}-Ga_2O_3$ nanobelts and nanoparticles were synthesized by a thermal annealing of as-milled GaN powders at $930^{\circ}C$ in nitrogen and oxygen atmosphere. respectively. The width of the nanobelts are $20\;nm{\sim}1000\;nm$. the thickness of the nanobelts are 100 nm. A bundle of the nanobelts is several centimeters in length. The lattice structure of these nanobelts and nanoparticles was identified to be a monoclinic ${\beta}-Ga_2O_3$ by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED).