Chemical synthesis and L12 ordering of CrPt3 nanoparticles
作者： A. Tomou , I. Panagiotopoulos , V. Tzitzios , Wanfeng Li , G.C. Hadjipanayis
DOI: 10.1016/J.JMMM.2013.01.025
关键词: Materials science 、 Nanoparticle 、 Ferrimagnetism 、 Nanotechnology 、 Microstructure 、 Stoichiometry 、 Phase (matter) 、 Chemical engineering 、 Coercivity 、 Chemical synthesis
摘要: Abstract Cr–Pt nanoparticles of different compositions around the ferrimagnetic Pt 3 Cr have been synthesized with thermolytic method and proper adjustment Pt(acac) 2 Cr(acac) mole ratios. The as prepared particles a size (5.5±1.0) nm but after heat-treatment at 850 °C for 2 h an inhomogeneous microstructure consisting clustered variable sizes 5–50 nm is obtained. Chemical ordering to L1 phase up S =0.83 has achieved optimized stoichiometry while moderate coercivity values 380 Oe are achieved.
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