Strong charge carrier effect on the magnetic coupling of La-doped CaMnO3
作者： H Martinho , E Granado , N.O Moreno , A Garcı́a , I Torriani
DOI: 10.1016/S0921-4526(02)00615-4
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摘要: Abstract The exchange interactions in polycrystalline samples of Ca1−xLaxMnO3 (0.00⩽x⩽0.05) are studied by means Raman scattering and electron paramagnetic resonance. Dramatic reductions the spin-phonon magnetic correlations observed for La doping levels as small ∼2–3%. These results show that charge carriers play an important role overall coupling electron-doped manganites, even at very low levels.
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