Optical properties of the Ba0.8Sr0.2TiO3/(Bi0.82, Nd0.02)FeO3 superlattice View Full Text


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Article Info

DATE

2014-04-27

AUTHORS

V. B. Shirokov, Yu. I. Golovko, V. M. Mukhortov, Yu. V. Revinskii

ABSTRACT

A Ba0.8Sr0.2TiO3/(Bi0.82, Nd0.02)FeO3 multilayer heteroepitaxial structure is prepared by successively depositing 20 Ba0.8Sr0.2TiO3 and (Bi0.82, Nd0.02)FeO3 layers, each 4 nm thick, using the method of rf sputtering. The layers grow on a single-crystal MgO substrate following the layer-by-layer mechanism. The structural perfection of the layers is examined by X-ray diffraction. The optical transmission is studied in the wavelength interval 200–1100 nm. The spectra are processed using a dispersion formula for the permittivity represented as a superposition of two oscillators with regard to relaxation. Such an approach allows us to separate direct and indirect transitions. The absorption edge of the superlattice for direct transitions is 80 nm wide and is estimated to be 3.78 eV. More... »

PAGES

571-575

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1063784214040239

DOI

http://dx.doi.org/10.1134/s1063784214040239

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1026962858


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