Hyperfine Interactions

, 39:235 | Cite as

Electric field gradient tensors of57Fe in orthorhombic (Mg, Fe)SiO3

  • J. Stanek
  • S. S. Hafner
Article

Abstract

A complete description of the electric field gradient (EFG) tensor at the M2 site of Fe2+ in a natural magnesium-rich orthopyroxene (orthoenstatite) was obtained from single-crystal Mössbauer spectra of57Fe. The sign ofV zz , asymmetry parameter η, and orientation of the tensor with respect to the crystallographic axesa, b andc were determined.V zz is positive, and its direction is about (±0.07). The data for the tensor at the M1 site of Fe2+ are less accurate.V zz at M1 may be assumed to be about parallel to the [111] direction. The results obtained for orthoenstatite are compared with the data of other pyroxenes.

Keywords

Thin Film Field Gradient Electric Field Gradient Asymmetry Parameter Gradient Tensor 

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Copyright information

© J.C. Baltzer AG, Scientific Publishing Company 1988

Authors and Affiliations

  • J. Stanek
    • 1
  • S. S. Hafner
    • 2
  1. 1.Institute of PhysicsJagiellonian UniversityCracowPoland
  2. 2.Institute of MineralogyUniversity of MarburgMarburgWest Germany

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