The sign of the internal field at 119Sn nuclei in Co2MnSn
- 1 November 1969
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 2 (11) , 2037-2046
- https://doi.org/10.1088/0022-3719/2/11/318
Abstract
The sign of the nuclear hyperfine field at a Sn nucleus in the ordered ferromagnetic Heusler-type alloy Co2MnSn has been determined using polarized Mössbauer γ-rays. Unlike all other fields measured at various nuclei in Heusler alloys, the field at Sn in Co2MnSn is shown to be positive. The measured value of + 107 ± 1 kOe at 42 °κ is compared with the theoretically predicted value obtained by assuming the field to be due to the oscillating conduction electron spin polarization induced by localized moments on the Mn atoms. This model, which yields the correct negative sign for all other measured fields, is also shown to yield the correct positive sign for the field at Sn in Co2MnSn.Keywords
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