Author/Authors :
Roghani, R. Department of Physics - Islamic Azad University Science and Research Branch,, Tehran, Iran , Sebt, S. A. Department of Physics - Islamic Azad University Science and Research Branch,, Tehran, Iran , Khajehnezhad, A. Department of Physics - Islamic Azad University Science and Research Branch,, Tehran, Iran
Abstract :
L10-FePt nanoparticles with different Ag percentages were prepared. The presence of 6% Ag in co-sputtering process with
deposition rate of 1 ̇ A∕s 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.
Keywords :
FePt–Ag nanocomposites , L10 structure , Easy axis ordering , Co-sputtering , Exchange interaction
