Electron momentum density in Ni75Cu25 and Ni75Co25 disordered alloys: a high-resolution Compton-scattering study
作者： J Kwiatkowska , L Dobrzyński , A Andrejczuk , E Żukowski , Ch Bellin
DOI: 10.1088/0953-8984/17/41/013
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摘要: We report high-resolution Compton profiles (CPs) of Ni75Cu25 and Ni75Co25 disordered, ferromagnetic alloys measured along [100], [110] [111] crystallographic directions. The directional CP anisotropies, profile derivatives reciprocal form factors B(z) are analysed in detail compared with first-principles KKR-CPA (Korringa–Kohn–Rostoker coherent potential approximation) calculations. Good overall agreement is found between the experimental theoretical anisotropies. It follows from experiment that majority-spin Fermi surface occurs at higher momentum than theory predicts. Also, a splitting secondary maxima functions observed, which not predicted by
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