IR magnetotransmission and magnetoresistance of Nd$_{0.52}$Sr$_{0.48}$MnO$_{3-\delta}$ manganite films on LaAlO$_3$ substrate

E. V. Mostovschikova^a, N. N. Loshkareva^a, N. I. Solin^a, Yu. M. Nikolaenko^b, V. A. Khokhlov^b, A. Yu. Prokhorov<sup>b

a</sup> Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg
^b Galkin Donetsk Institute for Physics and Engineering, Donetsk

Abstract: Nd$_{0.52}$Sr$_{0.48}$MnO$_{3-\delta}$ manganite films on LaAlO$_3$ substrate exhibit a large negative magnetotransmission [$(t_H - t_{H=0})/t_{H=0}\approx$ -14%] at a wavelength of 8.8 $\mu$m in a magnetic field of $H$ = 8 kOe and a large negative magnetoresistance [$(\rho_H - \rho_{H=0})/\rho_{H=0}\approx$ -50%] in a field of $H$ = 10 kOe at a temperature $T$ = 225 K. The influence of oxygen vacancies in the manganite lattice on the magnitude of observed effects is discussed. The high values of magnetotransmission and magnetoresistance allow Nd$_{0.52}$Sr$_{0.48}$MnO$_3$ films to be recommended for use in magnetic-field-controlled optoelectronic devices and in spintronics.

Received: 12.04.2012

 English version: Technical Physics Letters, 2012, 38:9, 835–838

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