Photoconductivity in bifeo3 thin films
WebAbove-band-gap optical excitation produces interdependent structural and electronic responses in a multiferroic BiFeO3 thin film. Time-resolved synchrotron x-ray diffraction shows that photoexcitation can induce a large out-of-plane strain, with magnitudes on the order of half of one percent following pulsedlaser excitation. WebMar 23, 2011 · We investigated capacitors based on polycrystalline narrow-band-gap BiFeO 3 (BFO) thin films with different top electrodes. The photovoltaic response for the capacitor with a Sn-doped In 2 O 3 (ITO) top electrode is about 25 times higher than that with a Au top electrode, which indicates that the electrode plays a key role in determining the …
Photoconductivity in bifeo3 thin films
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WebMar 4, 2008 · The optical properties of epitaxial BiFeO3 thin films have been characterized in the visible range. Variable temperature spectra show an absorption onset near 2.17 eV, …
WebApr 23, 2014 · The BiFeO3 (BFO) thin film was deposited by pulsed-laser deposition on SrRuO3 (SRO)-buffered (111) SrTiO3 (STO) substrate. X-ray diffraction pattern reveals a well-grown epitaxial BFO thin film. Atomic force microscopy study indicates that the BFO film is rather dense with a smooth surface. The ellipsometric spectra of the STO substrate, the … Webphotoconductivity, the increase in the electrical conductivity of certain materials when they are exposed to light of sufficient energy. Photoconductivity serves as a tool to understand …
WebFeb 25, 2005 · Fig. 2B compares the normalized XMCD spectrum of the 30-nm BFO film to that of a Fe 3 O 4 film. Several key points emerge from this comparison. First, using the Fe 3 O 4 spectrum as a fingerprint, we can clearly identify the peak at ∼709.5 eV as the Fe 2+ peak, consistent with our x-ray photoelectron spectroscopy results. Second, this peak … WebOptical properties of epitaxial BiFeO3 thin films grown via pulsed-laser deposition on (110) DyScO3 substrates have been investigated. Their near-normal spectroscopic reflectivity was measured in the spectral range 2 to 14 eV at room temperature, while spectroscopic ellipsometry in the spectral range 1–6 eV was measured in the temperature range from …
WebHerein, a photoelectrochemical study of optimized ferroelectric BiFeO 3 film shows that positive and negative polarization by applying an external field may lead to enhancement …
WebPhotoconductivity in BiFeO[sub 3] thin films. RC Rai. 2008, Applied Physics Letters ... freshly cut essential oil blendWebSep 11, 2024 · BFO monodomain thin films were grown at 650 °C under an oxygen pressure of 0.15 mbar, and the pulsed laser energy was set at 0.7 J cm −2 with a 10 Hz frequency. … freshly cut hay always smells clean and sweetWebSep 10, 2014 · A drastic change in the conductivity of strained BiFeO3 (BFO) films is observed after illuminating them with above-band gap light. This has been termed as … fates shura boots favorite characterWebcapacitor. Moreover, an almost 1000-fold photoconductivity enhancement is obtained in a ITO/poly-BFO/Pt capacitor at an incident light intensity of 450 μWcm−2 and zero bias. 2. Experimental details Poly-BFO ferroelectric thin films were grown by means of the conventional sol–gel method. Bismuth nitrate [Bi(NO 3) ·H 2O] and iron nitrate ... freshly cut grass smell is grass screamingWebPhotoconductivity of SrBi2Ta2O9 Thin Films L. Pintiliea and M. Alexeb* aNational Institute of Materials Physics, Bucharest-Magurele, PO Box MG-7, 76900, Romania bMax Planck Institute for Microstructure Physics, Weinberg 2, 06200 Halle/Saale, Germany Abstract Photoconductive properties of SrBi2Ta2O9 thin films in the 250–400nm wavelength … fate starry night fanfictionWebPhotoconductivity, as a well-known optical and electrical phenomenon in semiconductor, ... Temperature dependence of the dark resistivity of several DyBa 2 Cu 3 O 7-δ thin films … freshly cut grass screamsWeb4.3 Morphology of BiFeO3/FePt bilayer thin films at different deposition temperature 45 4.4 Measurement of magnetism of BiFeO3/FePt bilayer thin films at different deposition temperatures 49 Chapter 5 Discussion 53 5.1 Ordered-volume fraction 53 5.1.1 Ordered-volume fraction analysis in discussion forums of BiFeO3/FePt bilayer thin films 55 fate stay altrouge