Exchange-coupled nanocomposites with novel microstructure and enhanced remanence by a new approach
作者： Baoru Bian , Li Jin , Qiang Zheng , Fang Wang , Xiaohong Xu
DOI: 10.1016/J.JMST.2020.09.052
关键词:
摘要: Abstract Exchange-coupled nanocomposites with hard/soft magnetic phases are promising for the next generation of permanent magnets. Chemical methods have an advantage in controlling nanoscale size both phases. The obtained by chemical method generally consist a hard phase core and soft shell. However, soft-phase shell is easily oxidized leading to small enhancement remanence. Here, novel microstructure Fe@FePt Fe FePt has been synthesized replacement reaction, which can be controlled below 10 nm adjusting ratio nanoparticles PtCl4. Excellent exchange-coupling (single-phase-like demagnetization curves) between soft-hard was observed due precise control phases, substantial enhancements remanence (32 %) saturation magnetization (81 were optimal nanocompistes. This work provides alternative routine prepare heterostructure materials various applications.
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