^pKey;
Laboratory;
of;
New;
Ceramics;
and;
Fine;
Processing;
Department;
Chemistry;
Materials;
Science;
Engineering;
Tsinghua;
University;
Beijing;
100084;
^pof;
Physics;
Peking;
100871;
纳米磁学; 四氧化三钴; 形态转化; 制备; 焙烧温度; Co3O4; 电子显微镜; X射线衍射;