skip to main content

SciTech ConnectSciTech Connect

Title: Magnetism of Zn-doped SnO{sub 2}: Role of surfaces

Surface effects on the magnetization of Zn-doped SnO{sub 2} are investigated using first principles method. Magnetic behavior of Zn-doped bulk and highest and lowest energy surfaces—(001) and (110), respectively, are investigated in presence and absence of other intrinsic defects. The Zn-doped (110) and (001) surfaces of SnO{sub 2} show appreciable increase in the magnetic moment (MM) compared to Zn-doped bulk SnO{sub 2}. Formation energies of Zn defects on both the surfaces are found to be lower than those in bulk SnO{sub 2}. Zn doping favors the formation of oxygen vacancies. The density of states analysis on the Zn-doped (110) surface reveals that the spin polarization of the host band occurs primarily from p-orbitals of bridging oxygen atoms and the Zn atom itself contributes minimally. The present work provides a key understanding on the role played by the surfaces in inducing the magnetism of doped nanoparticles and thin films.
Authors:
;  [1]
  1. Department of Physics, Boise State University, 1910 University Dr., Boise, Idaho 83725 (United States)
Publication Date:
OSTI Identifier:
22273803
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; COMPARATIVE EVALUATIONS; DOPED MATERIALS; FORMATION HEAT; MAGNETIC MOMENTS; MAGNETISM; MAGNETIZATION; NANOSTRUCTURES; OXYGEN; PARTICLES; SPIN ORIENTATION; SURFACES; THIN FILMS; TIN OXIDES; VACANCIES; ZINC COMPOUNDS