Magneto‐optical effects of aluminum and ferrous substituted cobalt ferrite

Magneto‐optical effects of aluminum and ferrous substituted cobalt ferrite
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铝和铁取代钴铁氧体的磁光效应

DOI:
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发表时间:
1982
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影响因子:
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通讯作者:
J. Martens
J. Martens
中科院分区:
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文献类型:
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作者:
W. L. Peeters;J. Martens

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多晶CoFe2−xAlxO4 (0≤x≤0.8)和CoxFe3−xO4 (0≤x≤1.0)的极克尔旋转在0.6 eV≤E≤5.5 eV能量区域内测量。 CoFe2−xAlx O4 (x=0.1 和 0.6) 多晶薄膜的法拉第旋转在 0.6 eV≤E≤2.8 eV 的能量范围内测量。低于 3 eV 能量区域的光谱根据 Co2+ (Td) 的晶体场跃迁进行讨论。此外,在 2 eV 左右观察到新的强烈跃迁。这种转变归因于 Co2+ 到 Fe3+ 的电荷转移,两者都在八面体位点上。
The polar Kerr rotation of polycrystalline CoFe2−xAlxO4 (0≤x≤0.8) and CoxFe3−xO4 (0≤x≤1.0) was measured in the energy region 0.6 eV≤E≤5.5 eV. The Faraday rotation of thin polycrystalline films of CoFe2−xAlx O4 (x=0.1 and 0.6) was measured in the energy region of 0.6 eV≤E≤2.8 eV. The spectra in the energy region below 3 eV are discussed in terms of crystal field transitions of Co2+ (Td). Furthermore a new intense transition is observed around 2 eV. This transition is assigned to a charge transfer of Co2+ to Fe3+, both on the octahedral site.