The texture ordering in L10-FePt–Ag nanocomposites
الموضوعات : Journal of Theoretical and Applied Physics
R. Roghani
1
(Department of Physics, Science and Research Branch, Islamic Azad University)
S. A. Sebt
2
(Department of Physics, Science and Research Branch, Islamic Azad University)
A. Khajehnezhad
3
(Department of Physics, Science and Research Branch, Islamic Azad University)
الکلمات المفتاحية: FePt–Ag nanocomposites, L1 structure, Easy axis ordering, CO, Sputtering, Exchange interaction,
ملخص المقالة :
AbstractL10-FePt nanoparticles with different Ag percentages were prepared. The presence of 6% Ag in co-sputtering process with deposition rate of 1 A˙/sdocumentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$ {dot{A}}/ ext{s} $$end{document} at 500 °C led to the formation of FePt nanoparticles with 5–7 nm size in L10-fct phase. Moreover, Ag atoms laying in boundaries of these nanoparticles in these circumstances caused c axis to orient and (001) peak intensity in XRD spectrum to increase. This is the result of the indirect exchange interactions of Fe magnetic atoms through Ag atoms in these boundaries. Therefore, where L10-FePt grains have the most boundaries with each other, the order index would be maximum.
