Direct synthesis of fct-structured FePt nanoparticles at low temperature with assistance of poly(N-vinyl-2-pyrrolidone).
Direct synthesis of fct-structured FePt nanoparticles at low temperature with assistance of poly(N-vinyl-2-pyrrolidone).
复制标题
DOI：
10.1016/j.jcis.2007.01.049
复制
发表时间：
2007-04
影响因子：
9.9
通讯作者：
T. Iwamoto;Kin'ya Matsumoto;Y. Kitamoto;N. Toshima
中科院分区：
文献类型：
--
作者：
T. Iwamoto;Kin'ya Matsumoto;Y. Kitamoto;N. Toshima
以聚N-乙烯基-2-吡咯烷酮为保护剂，在较低的温度下成功地合成了具有fct结构的FePt纳米粒子。实验数据表明，在261 °C的反应温度下，FePt纳米颗粒从面心立方结构转变为面心四方（fct）结构。XRD和磁性测试结果表明，261 °C合成的FePt纳米粒子具有部分有序的fct结构，室温下具有铁磁性。
Direct synthesis of fct-structured FePt nanoparticles was successfully achieved by using poly(N-vinyl-2-pyrrolidone) as a protective reagent at lower temperature than the case using low molecular weight ligands as a protective reagent. Experimental data suggest that a transformation of FePt nanoparticles from face-centered cubic to face-centered tetragonal (fct) structure takes place at reaction temperature of 261 °C. The results of XRD and the magnetic properties exhibit that the FePt nanoparticles synthesized at 261 °C have partially ordered fct-structure and a ferromagnetic behavior at room temperature.