Abstract
In La0.8-X Bi x Sr0.2MnO 3 films(x=0∼0.3) prepared by a laser deposition technique, Magneto-Circular Dichroism (MCD) spectra between 1.5 to 6 eV and temperature dependence of resistivity were investigated. In the films without Bi, three optical transitions between 3 and 5 eV in MCD spectra are confirmed by the fitting. The Bi-doping makes shift these three transitions to higher energy and induces a new transition which shifts to lower energy by increasing of doping content. These transitions are ascribed to the charge transfer transitions from O2p to Mndγ (eg).
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