Optical properties of quasi-tetragonal BiFeO3 thin films

Chen, P.; Podraza, N. J.; Xu, X. S.; Melville, A.; Vlahos, E.; Gopalan, V.; Ramesh, R.; Schlom, D. G.; Musfeldt, J. L.
March 2010
Applied Physics Letters;3/29/2010, Vol. 96 Issue 13, p131907
Academic Journal
Optical transmission spectroscopy and spectroscopic ellipsometry were used to extract the optical properties of an epitaxially grown quasi-tetragonal BiFeO3 thin film in the near infrared to near ultraviolet range. The absorption spectrum is overall blue shifted compared with that of rhombohedral BiFeO3, with an absorption onset near 2.25 eV, a direct 3.1 eV band gap, and charge transfer excitations that are ∼0.4 eV higher than those of the rhombohedral counterpart. We interpret these results in terms of structural strain and local symmetry breaking.


Related Articles

  • Optical properties of silicon oxynitride thin films determined by vacuum ultraviolet spectroscopic ellipsometry. Hyun Jong Kim, N.; Yong Jai Cho, N.; Hyun Mo Cho, N.; Sang Youl Kim; Changsun Moon, N.; Gyungsu Cho, N.; Youngmin Kwon, N. // AIP Conference Proceedings;2003, Vol. 683 Issue 1, p171 

    We determined the optical constants of silicon oxynitride (SiOxNy) thin films using a vacuum ultraviolet spectroscopic ellipsometer. The SiOxNy layers with a nominal thickness of 25 nm ∼ 35 nm were grown on silicon substrates by using plasma enhanced chemical vapor deposition (PECVD). The...

  • Temperature dependence of electronic transitions and optical properties in multiferroic BiFeO3 nanocrystalline film determined from transmittance spectra. Li, W. W.; Zhu, J. J.; Wu, J. D.; Gan, J.; Hu, Z. G.; Zhu, M.; Chu, J. H. // Applied Physics Letters;9/20/2010, Vol. 97 Issue 12, p121102 

    The ultraviolet-infrared transmittance spectra of BiFeO3 nanocrystalline film have been studied in the temperature range 5.3-300 K. A redshift trend of the absorption edge and optical constants with increasing the temperature can be observed. Four interband electronic transitions can be uniquely...

  • Enhancement of ferromagnetic properties in Ni-doped BiFeO3. WANG, Y.; XU, G.; YANG, L.; REN, Z.; WEI, X.; WENG, W.; DU, P.; SHEN, G.; HAN, G. // Materials Science (0137-1339);2009, Vol. 27 Issue 1, p219 

    Ni-doped BiFeO3 samples were successfully synthesized by a hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy (EDS). It was found that the magnetization can be controlled by the Ni doping concentration. The...

  • Valence-driven electrical behavior of manganese-modified bismuth ferrite thin films. Wu, Jiagang; Wang, John; Xiao, Dingquan; Zhu, Jianguo // Journal of Applied Physics;Jun2011, Vol. 109 Issue 12, p124118 

    BiFe0.95R0.05O3 (Mn2+, Mn3+, and Mn4+) thin films with (110) orientation were fabricated on SrRuO3/Pt/TiO2/SiO2/Si(100) substrates via rf sputtering. With the increasing valence of Mn in BiFe0.95R0.05O3, the concentration of Fe2+ increases, whereas the concentration of oxygen vacancies...

  • X-ray nanodiffraction of tilted domains in a poled epitaxial BiFeO3 thin film. Hruszkewycz, S. O.; Folkman, C. M.; Highland, M. J.; Holt, M. V.; Baek, S. H.; Streiffer, S. K.; Baldo, P.; Eom, C. B.; Fuoss, P. H. // Applied Physics Letters;12/5/2011, Vol. 99 Issue 23, p232903 

    We present measurements of crystallographic domain tilts in a (001) BiFeO3 thin film using focused beam x-ray nanodiffraction. Films were ferroelectrically pre-poled with an electric field orthogonal and parallel to as-grown tilt domain stripes. The tilt domains, associated with higher energy...

  • Bismuth ferrite composite thin films. Wu, Jiagang; Zhang, Binyu; Wang, Xiaopeng // Applied Physics A: Materials Science & Processing;Jun2013, Vol. 111 Issue 4, p1017 

    0.60BiLaFeO-0.40Pb(ZrTi)O composite thin films were deposited on Pt/TiO/SiO/Si(100) substrates by radio-frequency sputtering and their ferroelectric and fatigue properties were mainly investigated. The composite thin films have a low dielectric loss, a high dielectric constant, and enhanced...

  • Giant optical enhancement of strain gradient in ferroelectric BiFeO3 thin films and its physical origin. Schaller, Richard D.; Schlom, Darrell G.; Li, Yuelin; Walko, Donald A.; Wen, Haidan; Adamo, Carolina; Chen, Pice; Evans, Paul G.; Zhang, Qingteng; Nakhmanson, Serge M.; Parker, William; Rowland, Clare E. // Scientific Reports;11/20/2015, p16650 

    Through mapping of the spatiotemporal strain profile in ferroelectric BiFeO3 epitaxial thin films, we report an optically initiated dynamic enhancement of the strain gradient of 105-106 m−1 that lasts up to a few ns depending on the film thickness. Correlating with transient optical...

  • Magnetic and optical properties of rf-sputtered zinc ferrite thin films. Sultan, M.; Singh, R. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07A512 

    Zn-ferrite (ZnFe2O4) thin films were deposited by rf-magnetron sputtering on glass substrates at room temperature (RT) in pure oxygen environment. The as-deposited films were investigated by x-ray diffraction to show that single phase nanocrystalline spinel patterns belong to zinc ferrite. The...

  • Optical spectroscopy of charge transfer transitions in multiferroic manganites, ferrites, and related insulators. Moskvin, A. S.; Pisarev, R. V. // Low Temperature Physics;Jun2010, Vol. 36 Issue 6, p489 

    The results of theoretical and experimental studies of charge transfer (CT) transitions in multiferroic manganites, ferrites, and related insulators are reviewed. Starting with a simple cluster model approach one-center p-d and two-center d-d CT transitions, their polarization properties, the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics