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Sökning: onr:"swepub:oai:DiVA.org:uu-364369" > The origin of low b...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04145naa a2200421 4500 | |
| 001 | oai:DiVA.org:uu-364369 | |
| 003 | SwePub | |
| 008 | 181025s2018 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3643692 URI |
| 024 | 7 | a https://doi.org/10.1209/0295-5075/124/270052 DOI |
| 040 | a (SwePub)uu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Phuyal, Dibyau Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)dibph977 |
| 245 | 1 0 | a The origin of low bandgap and ferroelectricity of a co-doped BaTiO3 |
| 264 | c 2018-11-19 | |
| 264 | 1 | b IOP Publishing,c 2018 |
| 338 | a print2 rdacarrier | |
| 500 | a Corection in: EPL, Volume: 124, Issue: 6, Article Number: 69901, DOI: 10.1209/0295-5075/124/69901 | |
| 520 | a We recently demonstrated the lowest bandgap bulk ferroelectric material, BaTi1-x(Mn1/2Nb1/2)xO3, a promising candidate material for visible light absorption in opto- electronic devices. Using a combination of x-ray spectroscopies and density functional theory (DFT) calculations, we here elucidate this compound’s electronic structure and the modifications induced by Mn doping. In particular, we are able to rationalize how this compound retains its ferroelectricity even through a significant reduction of the optical gap upon Mn doping. The local electronic structure and atomic coordination are investigated using x-ray absorption at the Ti K, Mn K, and O K edges, which suggests only small distortions to the parent tetragonal ferroelectric system, BaTiO3, thereby providing a clue to the substantial retention of ferroelectricity in spite of doping. Features at the Ti K edge, which are sensitive to local symmetry and an indication of Ti off-centering within the Ti-O6 octahedra, show modest changes with doping and strongly corroborates with our measured polarization values. Resonant photoelectron spectroscopy results suggest the origin of the reduction of the bandgap in terms of newly created Mn d bands that hybridize with O 2p states. X-ray absorption spectra at the O K-edge provide evidence for new states below the conduction band of the parent compound, illustrating additional contributions facilitating bandgap reduction. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Den kondenserade materiens fysik0 (SwePub)103042 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Condensed Matter Physics0 (SwePub)103042 hsv//eng |
| 653 | a Physics with spec. in Atomic, Molecular and Condensed Matter Physics | |
| 653 | a Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik | |
| 700 | 1 | a Mukherjee, Sohamu Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)sohmu733 |
| 700 | 1 | a Das, Shyamashisu Department of Solid State and Structural Chemistry Unit, Indian Institute of Science - Bengaluru 560012, India4 aut |
| 700 | 1 | a Jana, Somnathu Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)somja217 |
| 700 | 1 | a Kvashnina, Kristina O.u Rossendorf Beamline at ESRF - The European Synchrotron - CS40220, 38043 Grenoble Cedex 9, France; Helmholtz Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology - PO Box 510119, 01314 Dresden, Germany4 aut |
| 700 | 1 | a Sarma, D.D.u Department of Solid State and Structural Chemistry Unit, Indian Institute of Science - Bengaluru 560012, India4 aut |
| 700 | 1 | a Rensmo, Håkanu Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)hakanrm |
| 700 | 1 | a Butorin, Sergei M.u Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)sergbuto |
| 700 | 1 | a Karis, Olofu Uppsala universitet,Molekyl- och kondenserade materiens fysik4 aut0 (Swepub:uu)olofkari |
| 710 | 2 | a Uppsala universitetb Molekyl- och kondenserade materiens fysik4 org |
| 773 | 0 | t Europhysics lettersd : IOP Publishingg 124:2q 124:2x 0295-5075x 1286-4854 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-364369 |
| 856 | 4 8 | u https://doi.org/10.1209/0295-5075/124/27005 |
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