• About
  • Policies
  • What is openaccess
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Nanotechnology Research Center (NANOTAM)
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Nanotechnology Research Center (NANOTAM)
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Electron spectroscopy and the electronic structure of KNbO3: First principle calculations

      Thumbnail
      View / Download
      547.7 Kb
      Author
      Simsek S.
      Koc, H.
      Trepakov, V. A.
      Mamedov, A. M.
      Özbay, Ekmel
      Date
      2014
      Source Title
      Ferroelectrics
      Print ISSN
      0015-0193
      Publisher
      Taylor & Francis Online
      Volume
      461
      Issue
      1
      Pages
      99 - 105
      Language
      English
      Type
      Article
      Item Usage Stats
      137
      views
      141
      downloads
      Abstract
      The electronic structures of KNbO3were calculated within the density functional theory, and their evolution was analyzed as the crystal-field symmetry changes from cubic to rhombohedral via tetragonal phase. We carried out electron-energy loss spectroscopy experiments by using synchrotron radiation and compared the results with the theoretical spectra calculated within Density Functional Theory. The dominant role of the NbO6 octahedra in the formation of the energy spectra of KNbO3compound was demonstrated. The anomalous behavior of plasmons in ferroelectrics was exhibited by the function representing the characteristic energy loss in the region of phase transition. © 2014 Copyright Taylor & Francis Group, LLC.
      Keywords
      Density functional theory
      Electron spectroscopy
      Energy dissipation
      Niobium oxide
      Plasmons
      Anomalous behavior
      Characteristic energy
      Electron energy loss
      First principle calculations
      Symmetry changes
      Tetragonal phase
      Theoretical spectra
      Electronic structure
      Permalink
      http://hdl.handle.net/11693/28630
      Published Version (Please cite this version)
      http://dx.doi.org/10.1080/00150193.2014.889998
      Collections
      • Nanotechnology Research Center (NANOTAM) 1026
      Show full item record

      Related items

      Showing items related by title, author, creator and subject.

      • Thumbnail

        Dynamical screening effects in hot-electron scattering from electron-hole plasma and LO-phonon modes in quantum wires 

        Bennett, C. R.; Tanatar, Bilal; Constantinou, N. C. (Elsevier, 1996)
        We present a fully dynamical and finite temperature study of the hot-electron momentum relaxation rate and the power loss in a coupled system of electron-hole plasma and bulk LO-phonons in a quantum wire structure. ...
      • Thumbnail

        Imaging capability of pseudomorphic high electron mobility transistors, AlGaN/GaN, and Si micro-Hall probes for scanning Hall probe microscopy between 25 and 125 °c 

        Akram, R.; Dede, M.; Oral, A. (American Vacuum Society, 2009)
        The authors present a comparative study on imaging capabilities of three different micro-Hall probe sensors fabricated from narrow and wide band gap semiconductors for scanning hall probe microscopy at variable temperatures. ...
      • Thumbnail

        Simultaneous photoinduced electron transfer and photoinduced CuAAC processes for antibacterial thermosets 

        Oz, E.; Uyar, T.; Esen, H.; Tasdelen, M. A. (Elsevier, 2017)
        A combination of simultaneous photoinduced electron transfer and photoinduced CuAAC processes enables the in-situ preparation of antibacterial thermosets containing silver nanoparticles (AgNPs) in one-pot. Upon photolysis ...

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartments

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 1771
      Copyright © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy