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      https://www.ias.ac.in/article/fulltext/pram/011/02/0159-0169

    • Keywords

       

      Cu2MnAl; polarised neutron diffraction; Mn form factor; magnetic moment density

    • Abstract

       

      A polarised neutron study of the ferromagnetic Heusler alloy Cu2Mn0.863Al1.057 has been made. It has been concluded that the magnetic moment density is primarily situated on the Mn ions. On assigning the Mn-moment value, the observed magnetic form factor is found to be in good agreement with the Mn2+ free ion form factor calculated by Watson and Freeman. A slight asphericity has been observed in the moment density. It is estimated that there are about 3% excess 3d-electrons in the Eg states compared to spherical distribution. There is evidence of a very small positive polarisation of the Cu atoms. No appreciable conduction electron polarisation is found.

    • Author Affiliations

       

      V C Rakhecha1 R Chakravarthy1 N S Satya Murthy1

      1. Solid State Physics Section, Nuclear Physics Division, Bhabha Atomic Research Centre, Bombay - 400 085
    • Dates

       
  • Pramana – Journal of Physics | News

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