Giant magneto-optical Faraday effect of nanometer Fe-ln2O3 granular films
The giant magneto-optical Faraday effect of nanometer ferromagnetic metal-semiconductor matrix Fe-ln2O3 granular films prepared by the radio frequency sputtering are studied. The result shows that the Faraday rotation angle θF value of the granular film samples with Fe volume fraction x = 35% is of...
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Published in | Chinese science bulletin Vol. 53; no. 8; pp. 1133 - 1137 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2008
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Subjects | |
Online Access | Get full text |
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Summary: | The giant magneto-optical Faraday effect of nanometer ferromagnetic metal-semiconductor matrix Fe-ln2O3 granular films prepared by the radio frequency sputtering are studied. The result shows that the Faraday rotation angle θF value of the granular film samples with Fe volume fraction x = 35% is of the order of 10^5(°)/cm at room temperature. Temperature dependence of the Faraday rotation angle θF of Fe0.35(In2O3)0.65 granular films shows that θF value below 10 K increases rapidly with the decrease of the temperature, and when T= 4.2 K, θF value is 106(°)/cm. Through the study of the dependence of low field susceptibility on temperature and the hysteresis loops at different temperatures, it has been found that when the temperature decreases to a critical point Tp = 10 K, the transformation of state from ferro-agnetic to spin-glass-like occurs in Fe0.35(In2O3)0.65 granular films. The remarkable increase of the Faraday rotation angle θF value of Fe0.35(In2O3)0.65 granular films below 10 K seems to arise from the sp-d exchange interaction of the granular film samples in the spin-glass-like state. |
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Bibliography: | granular films, magneto-optical Faraday effect, structure, magnetic property 11-1785/N O484 |
ISSN: | 1001-6538 1861-9541 |