Magnetization density measurements on metastable (Formula presented) alloys at four compositions (Formula presented) 40, 50, and 60 at. %) and at 5 K temperature were carried out by means of polarized neutron diffraction. The samples were produced by high-energy ball milling and characterized by x-ray diffraction and fluorescence measurements. Additional bulk magnetization measurements were carried out on the two samples at high Fe concentration. Over the present concentration region, the Fe-Cu system is ferromagnetic and the four samples were found to be in the fcc phase. Fe-Cu is therefore a very suitable system to investigate the magnetic state of Fe in an fcc environment. Other than confirming that the Fe-Cu system is not a simple dilution alloy, the present results were compatible with a two-state model for fcc Fe—that is, two different coexisting electronic states associated with different magnetic moments and form factors. © 2000 The American Physical Society.
Experimental study of the spin density of metastable fcc ferromagnetic Fe-Cu alloys / Bove, L.; Petrillo, C.; Sacchetti, F.; Mazzone, G.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 61:14(2000), pp. 9457-9466. [10.1103/PhysRevB.61.9457]
Experimental study of the spin density of metastable fcc ferromagnetic Fe-Cu alloys
Bove, L.;
2000
Abstract
Magnetization density measurements on metastable (Formula presented) alloys at four compositions (Formula presented) 40, 50, and 60 at. %) and at 5 K temperature were carried out by means of polarized neutron diffraction. The samples were produced by high-energy ball milling and characterized by x-ray diffraction and fluorescence measurements. Additional bulk magnetization measurements were carried out on the two samples at high Fe concentration. Over the present concentration region, the Fe-Cu system is ferromagnetic and the four samples were found to be in the fcc phase. Fe-Cu is therefore a very suitable system to investigate the magnetic state of Fe in an fcc environment. Other than confirming that the Fe-Cu system is not a simple dilution alloy, the present results were compatible with a two-state model for fcc Fe—that is, two different coexisting electronic states associated with different magnetic moments and form factors. © 2000 The American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
