Hyperfine Interactions

, Volume 14, Issue 1, pp 89–95 | Cite as

NMR spin echoes and quadrupole effects in nickel single crystals

  • J. Bunke
  • H. Brömer


NMR spin echo measurements of naturally abundant61Ni have been performed with Néel-type nickel single crystals at 4.2 K. The NMR excitation condition could properly be chosen in order to get signals either from nuclei situated within magnetic domains or within domain walls. In both cases a quadrupole splitting of the NMR line could be observed. By applying an external magnetic field, the direction of the domain magnetization could be varied with respect to the fcc crystal lattice. From the variation of the quadrupole splitting with the crystallographic direction, the tensor of the electric field gradient (EFG) has been derived. The quadrupole splittings and the corresponding field gradients in the principal axis system of the EFG are: ΔvQ kHz, ΔvQ kHz, ΔvQ kHz, V<111>=(6.6±0.5)·1018 V/m2, V<110>=4.6±0.5)·1018 V/m2, V<112>=(2.0±0.5)·1018 V/m2.


Domain Wall Quadrupole Splitting Electric Field Gradient Magnetic Domain Spin Echo 
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Copyright information

© J.C. Baltzer Scientific Publishing Company 1983

Authors and Affiliations

  • J. Bunke
    • 1
  • H. Brömer
    • 1
  1. 1.Institut A für Physik, Abteilung für Angewandte Kern- und NeutronenphysikTechnische Universität Carolo-WilhelminaBraunschweigFRG

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