TY - JOUR
T1 - Enhanced chemical ordering and coercivity in FePt alloy nanoparticles by Sb-doping
AU - Yan, Qingyu
AU - Kim, Taegyun
AU - Purkayastha, Arup
AU - Ganesan, Pethuraja Gopal
AU - Shima, Mutsuhiro
AU - Ramanath, Ganapathiraman
PY - 2005/9/16
Y1 - 2005/9/16
N2 - The enhanced chemical ordering and coercivity in FePt nanoparticles by the addition of Sb-doped nanoparticles during synthesis and annealing, were analyzed. It was found that Sb-doped FePt nanoparticles require very low annealing temperatures to partially transform to the ordered-L10 structure. Annealing promotes the L10 phase transformation from disordered fcc to ordered fct, as indicated by the emergence of (001), (110), (002), and (201) Bragg peaks. The results show that the ordering temperature bears an inverse correlation with Sb activity and can be lowered by ∼50-100°C.
AB - The enhanced chemical ordering and coercivity in FePt nanoparticles by the addition of Sb-doped nanoparticles during synthesis and annealing, were analyzed. It was found that Sb-doped FePt nanoparticles require very low annealing temperatures to partially transform to the ordered-L10 structure. Annealing promotes the L10 phase transformation from disordered fcc to ordered fct, as indicated by the emergence of (001), (110), (002), and (201) Bragg peaks. The results show that the ordering temperature bears an inverse correlation with Sb activity and can be lowered by ∼50-100°C.
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U2 - 10.1002/adma.200500949
DO - 10.1002/adma.200500949
M3 - Article
AN - SCOPUS:25144486822
SN - 0935-9648
VL - 17
SP - 2233
EP - 2237
JO - Advanced Materials
JF - Advanced Materials
IS - 18
ER -