Optical properties of the Ba0.8Sr0.2TiO3/(Bi0.82, Nd0.02)FeO3 superlattice. Shirokov, V. B., Golovko, Y. I., Mukhortov, V. M., & Revinskii, Y. V. Technical Physics, 59(4):571–575, April, 2014.
Optical properties of the Ba0.8Sr0.2TiO3/(Bi0.82, Nd0.02)FeO3 superlattice [link]Paper  doi  abstract   bibtex   
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.
@article{shirokov_optical_2014,
	title = {Optical properties of the {Ba0}.{8Sr0}.{2TiO3}/({Bi0}.82, {Nd0}.02){FeO3} superlattice},
	volume = {59},
	issn = {1090-6525},
	url = {https://doi.org/10.1134/S1063784214040239},
	doi = {10.1134/S1063784214040239},
	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.},
	language = {en},
	number = {4},
	urldate = {2023-11-11},
	journal = {Technical Physics},
	author = {Shirokov, V. B. and Golovko, Yu. I. and Mukhortov, V. M. and Revinskii, Yu. V.},
	month = apr,
	year = {2014},
	keywords = {Barium Strontium, Barium Strontium Titanate, Multilayer Structure, Strontium Titanate, Wavelength Interval},
	pages = {571--575},
}

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