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- W1996378385 abstract "We have studied the magnetic and optical properties of hexaboride Eu1−xCaxB6 for x = 0, 0.13, 0.25, 0.35, 0.54 and 1.0 from measurements of dc magnetization and wide-range absolute reflectivity. The ferromagnetic transition temperature Tc decreases with Ca-doping and is completely suppressed when x exceeds 0.35. The Drude plasma frequency ωp2 also decreases with x and disappears at the same composition. We have analysed this correlation between Tc and ωp2 in terms of the RKKY theory. We have also simulated optical spectra of Eu1−xCaxB6 using the effective medium theory and compare them with the measured data. The results show that Eu1−xCaxB6 is not a composite of EuB6 and CaB6 but forms a homogeneous magnetic alloy." @default.
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- W1996378385 date "2007-02-16" @default.
- W1996378385 modified "2023-09-27" @default.
- W1996378385 title "Ferromagnetism and infrared conductivity of the homogeneous hexaboride alloy Eu1−xCaxB6" @default.
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- W1996378385 doi "https://doi.org/10.1088/0953-8984/19/10/106203" @default.
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