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Study of Magneto-Transmission Spectra of La _{0.7} Pb _{0.3} MnO _{3 - \delta } Epitaxial Thin Film

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3 Author(s)
Gorman, W. ; Dept. of Phys., Appl. Phys., & Astron., State Univ. of New York, Binghamton, NY ; Minseob Kim ; Wang, Jian-Qing

Magneto-transmission (MT) of epitaxially grown La0.7Pb 0.3MnO3-delta as measured and studied. ThermoElectron Nexus 670 FT-IR spectrometer equipped with an electromagnet was used to obtain IR spectra in the range of 350 to 4000 cm-1 in various applied magnetic fields up to 1.0 Tesla. For optimal magneto-spectroscopic measurements in transmission, the studied film had a thickness of 190 nm, with a maximum value up to 80% at 320 K in the colossal magneto-resistance (CMR) effect in 5.5 Tesla. It was observed that the MT peaks at around 1400 cm-1 with a maximum value of 1.0% at 1.0 Tesla. When compared with the CMR effect, the measured MT value at this peak position resembles that of the CMR effect closely in the field range studied

Published in:

Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 6 )

Date of Publication:

June 2007

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