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- W2038136973 abstract "We made measurements of polar Kerr rotation (KR) on granular thin films, composed of iron particles, with different average diameter (50<Φ<100 Å), dispersed in an amorphous Al2O3 matrix. The measurements were performed at 300 and 4 K in the wavelength interval 0.5–2.5 μm. The spectra observed show a decreasing tail in the visible region and then oscillations in the near infrared due to composition of the light beams reflected by the two surfaces of the sample. Values as high as 2.8° of KR in the visible are obtained when a magnetic field of 4 KOe is applied perpendicular to the surface of the sample. The KR signal was also measured as a function of the temperature at the specific values of wavelength corresponding to some maxima and minima of the spectrum. The KR intensity increases as the temperature decreases down to a characteristic temperature T*1, below which it remains constant. T*1 increases with increasing iron concentration and particle dimensions. This behavior is in agreement with previous results of Faraday rotation and susceptibility measurements." @default.
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- W2038136973 date "1991-04-15" @default.
- W2038136973 modified "2023-09-27" @default.
- W2038136973 title "Magneto-optical Kerr rotation on Fe-Al2O3 granular thin films" @default.
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- W2038136973 doi "https://doi.org/10.1063/1.348099" @default.
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