室温时磁铁矿是立方尖晶石结构 (cubic spinel structure) (如图 1)，其中铁有 A 及 B 位子 (site) 之区别，1/3 的铁占据 A-site，为三价铁，2/3 的铁占据 B-site，二价 图1.
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spinel cubic structure 尖晶石立方结构
The results showed that although the structure of the samples was confirmed to be cubic spinel structure, the lattice parameter and specific surface area of the samples are different.
结果表明虽然各样品均属于立方尖晶石结构但晶格常数和比表面积均不相同。
The powder prepared by the coprecipitation process showed the formation of spinel cubic structure with a saturation magnetization (Ms) of 31.
研究结果表明 ，高温合成过程中过渡金属氧化物形成立方尖晶石固溶体。
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