Giant change in infrared light transmission in La0.67Ca0.33MnO3 film near the Curie temperature
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Transport, magnetic, magneto-optical (Kerr effect) and optical (light absorption) properties have been studied in an oriented polycrystalline La 0.67Ca 0.33MnO 3 film which shows colossal magnetoresistance. The correlations between these properties are presented. A giant change in infrared light transmission (more than a thousand-fold decrease) is observed on crossing the Curie temperature (about 270 K) from high to low temperature. Large changes in transmittance in a magnetic field were observed as well. The giant changes in transmittance and the large magnetotransmittance can be used for development of IR optoelectronic devices controlled by thermal and magnetic fields. Required material characteristics of doped manganites for these devices are discussed. © 2002 American Institute of Physics. © 2002 American Institute of Physics.
author list (cited authors)
Sukhorukov, Y. P., Gan'shina, E. A., Belevtsev, B. I., Loshkareva, N. N., Vinogradov, A. N., Rathnayaka, K., Parasiris, A., & Naugle, D. G.