Abstract
The lattice site of iron in potassium niobate has been investigated by channeling of He-ions in combination with simultaneous Rutherford backscattering analysis (RBS), nuclear reaction analysis (NRA) and particle induced X-ray emission (PIXE). He-ions with energies of 3.1 MeV were used at the Dynamitron accelerator of the university at Stuttgart. Oxygen was detected by the resonant 16O(α,α)16O nuclear reaction at 3.05 MeV. Two crystals containing 0.12 mol% iron cut perpendicular to the 〈100〉 and 〈110〉 axis directions according to the cubic configuration of the lattice have been examined. Angular PIXE yield profiles of axial channeling close to the 〈100〉, 〈110〉, 〈111〉 and 〈221〉 axes have been compared for iron, niobium and potassium. Also computer simulations have been performed and compared with the measured data. Close resemblance between the angular yield profiles for K and Fe has been found. Therefore we conclude that Fe occupies K lattice sites in Fe:KNbO3. This result is also supported by computer simulations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
