%0 Journal Article %1 ihlefeld2008optical %A Ihlefeld, JF %A Podraza, NJ %A Liu, ZK %A Rai, RC %A Xu, X %A Heeg, T %A Chen, YB %A Li, J %A Collins, RW %A Musfeldt, JL %A others, %D 2008 %I AIP %J Applied physics letters %K BiFeO3 absorption bandgap experiment ferroelectric_photovoltaics %N 14 %P 142908 %T Optical band gap of BiFeO3 grown by molecular-beam epitaxy %V 92 %X BiFeO3 thin films have been deposited on (001) SrTiO3 substrates by adsorption-controlled reactive molecular-beam epitaxy. For a given bismuth overpressure and oxygen activity, single-phase BiFeO3 films can be grown over a range of deposition temperatures in accordance with thermodynamic calculations. Four-circle x-ray diffraction reveals phase-pure, epitaxial films with w rocking curve full width at half maximum values as narrow as 29 arc sec (0.008°). Multiple-angle spectroscopic ellipsometry reveals a direct optical band gap at 2.74 eV for stoichiometric as well as 5% bismuth-deficient single-phase BiFeO3 films.

@article{ihlefeld2008optical, abstract = {BiFeO3 thin films have been deposited on (001) SrTiO3 substrates by adsorption-controlled reactive molecular-beam epitaxy. For a given bismuth overpressure and oxygen activity, single-phase BiFeO3 films can be grown over a range of deposition temperatures in accordance with thermodynamic calculations. Four-circle x-ray diffraction reveals phase-pure, epitaxial films with w rocking curve full width at half maximum values as narrow as 29 arc sec (0.008°). Multiple-angle spectroscopic ellipsometry reveals a direct optical band gap at 2.74 eV for stoichiometric as well as 5% bismuth-deficient single-phase BiFeO3 films.}, added-at = {2018-08-19T23:34:45.000+0200}, author = {Ihlefeld, JF and Podraza, NJ and Liu, ZK and Rai, RC and Xu, X and Heeg, T and Chen, YB and Li, J and Collins, RW and Musfeldt, JL and others}, biburl = {https://www.bibsonomy.org/bibtex/27e96442c9dc19ba9475c53cdfa61ca5d/skoerbel}, interhash = {6d54178ae32eea8b74c7d2d8eb0d0a3d}, intrahash = {7e96442c9dc19ba9475c53cdfa61ca5d}, journal = {Applied physics letters}, keywords = {BiFeO3 absorption bandgap experiment ferroelectric_photovoltaics}, number = 14, pages = 142908, publisher = {AIP}, timestamp = {2018-08-22T02:23:11.000+0200}, title = {Optical band gap of BiFeO3 grown by molecular-beam epitaxy}, volume = 92, year = 2008 }