Optical Response of La 1-x MnO 3 /Al 2 O 3 Films
G.-J. Babonas a,b , A. Reza a , R. Szymczak c , M. Baran c , K. Fr÷hlich d , V. Jasutis a and R. Diduszko c
a Semiconductor Physics Institute, 2600 Vilnius, Lithuania
b Vilnius Gediminas Technical University, Sauletekio 11, 2040 Vilnius, Lithuania
c Institute of Physics, Polish Academy of Sciences, al. Lotnikˇw 32/46, 02-668 Warsaw, Poland
d Institute of Electrical Engineering, 84239 Bratislava, Slovak Republic
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Received: October 2, 2002
La 1-x MnO 3 films grown by metal organic chemical vapor deposition technique on r-plane cut Al 2 O 3 substrates were investigated. The change of the optical response over the La 1-x MnO 3 /Al 2 O 3 sample surface was investigated along with the temperature dependence of magnetization. The mostly pronounced difference in the spectra of dielectric function occurred in the region of the d-d transitions of Mn-ions. The changes in the optical spectra and magnetic properties were correlated to the structural features of thin film.
DOI: 10.12693/APhysPolA.103.77
PACS numbers: 78.66.Li, 75.70.Ak