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http://dx.doi.org/10.4283/JKMS.2016.26.4.129

Characterization of FePtN Nano-particles Synthesized by Thermal Decomposition and Mixed-gas Nitrification  

Oh, Young Woo (Department of Nano Science and Materials Engineering)
Publication Information
Journal of the Korean Magnetics Society / v.26, no.4, 2016 , pp. 129-132 More about this Journal
Abstract
The effect of thermal-nitrification on L1o transfomation in nano-sized FePt particles was studied. As-synthesized FePt nanoparticles by thermal decomposition method have fcc structured phase and their Hc and Ms were 247.34 Oe and 27.308 emu/g, respectively. According to the XRD analysis, phase transformation from fcc (face centered cubic) to fct (face centered tetragonal) structure was revealed by heating under $NH_3+H_2$ mixed-gas atmosphere. Also a slight shift of each (111) peak indicated phase transformation from fcc to fct structure. Hc and Ms of fct FePtN were 1058.2 Oe and 32.718 emu/g, respectively. The nano-sized FePtN magnetic particles synthesized by thermal decomposition method and mixed-gas nitrification are expected for advanced applications such as high density magnetic recording media and biomedical materials.
Keywords
FePt nanoparticles; mixed-gas nitrification; phase transformation;
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