应用X射线衍射密度法Zn(Ga,Fe)2O4(R因子法)计算了Zn(Ga,Fe)2O4固溶体尖晶石结构中阳离子分布, 结果表明: 金属离子在ZnGa2O4尖晶石结构中采取中间偏反型分布. 随Fe3+离子进入尖晶石结构, 促使Zn2+进入A位的量增多, 而Ga3+进入B位的量增多. 同时, 各样品的IR光谱表明: Fe 3+进入尖晶石结构取代Ga 3+对代表电子传导活化能的极限频率影响很大.
The cation distribution in Zn(Ga,Fe)2O4 solid solutions with spinel structure were calculated by using the X-ray powder diffraction density method (R factor Method). The results indicate that the cations show osculant but lean to inverse distribution in Zn(Ga,Fe)2O4. With Fe3+ introduction into the spinel structure of Zn(Ga,Fe)2O4, the Zn2+ concentration in A sites and Ga3+ concentration in B sites increase. Meanwhile, the IR spectra of samples indicate threshold frequency representing the activation energy for electron conduction is affected sharply by the substitution of Fe3+ for Ga3+.
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