The texture ordering in L۱۰-FePt–Ag nanocomposites

AbstractL۱۰-FePt nanoparticles with different Ag percentages were prepared. The presence of ۶% Ag in co-sputtering process with deposition rate of ۱ A˙/sdocumentclass[۱۲pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-۶۹pt} egin{document} {dot{A}}/ ext{s} end{document} at ۵۰۰ °C led to the formation of FePt nanoparticles with ۵–۷ nm size in L۱۰-fct phase. Moreover, Ag atoms laying in boundaries of these nanoparticles in these circumstances caused c axis to orient and (۰۰۱) 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 L۱۰-FePt grains have the most boundaries with each other, the order index would be maximum.

کلیدواژه ها:

FePt–Ag nanocomposites ، L۱ structure ، Easy axis ordering ، CO ، Sputtering ، Exchange interaction