Science;
School,;
Xi'an;
University;
of;
Technology,;
Xi'an;
710048,;
China;
Science;
School,;
Xi'an;
University;
of;
Technology,;
Xi'an;
710048,;
China;
.Electronic;
Information;
Science;
and;
Engineering;
School,;
Northwestern;
University,;
Xi;
';
an;
710068,;
China;
.Electronic;
Information;
Science;
and;
Engineering;
School,;
Northwestern;
University,;
Xi;
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an;
710068,;
China;
红外振动光谱; 溶胶凝胶法; 氮化镓; 纳米晶; 高分辨透射电子显微镜; X射线光电子能谱; X射线衍射; HRTEM;