Park Jong-Hwan, Shin Se-Hee, Kim Seok-Hun, Park Jung-Kab, Lee Jung-Woo, Shin Jin-Ha, Park Jung-Ho, Kim Sun-Woo, Choi Ho-Jun, Lee Kyung-Sub, Ro Jae-Chul, Park Chan, Suh Su-Jeong
J Nanosci Nanotechnol. 2018 Oct 1;18(10):7115-7119. doi: 10.1166/jnn.2018.15477.
This study investigated the effect of synthesis time and composition on magnetic properties of FeCo nanoparticles. Fe75Co25, Fe66Co34, Fe52Co48 nanoparticles were synthesized by the polyol method. The saturation magnetization of Fe75 Co25, Fe66Co34, Fe52Co48 nanoparticles was 178 emu/g, 191 emu/g and 197 emu/g, respectively. The coercivity of Fe75 Co25, Fe66Co34, Fe52Co48 was 113 Oe, 131 Oe and 89.2 Oe respectively. The synthesis time of Fe52Co48 nanoparticles was also varied (2 h and 3 h) to determine the optimal synthesis time. The saturation magnetization of Fe52Co48 synthesized for 2 h, 3 h was 243 emu/g, 202 emu/g, respectively. The coercivity of Fe52Co48 synthesized for 2 h and 3 h was 46 Oe and 111 Oe, respectively. The highest saturation magnetization and lowest coercivity was obtained using a synthesis time of 2 h. Based on these results, it was confirmed that Fe52Co48 had the highest saturation magnetization and lowest coercivity among all of the compositions tested, and optimal synthesis time was 2 h.
本研究调查了合成时间和成分对FeCo纳米颗粒磁性的影响。采用多元醇法合成了Fe75Co25、Fe66Co34、Fe52Co48纳米颗粒。Fe75Co25、Fe66Co34、Fe52Co48纳米颗粒的饱和磁化强度分别为178 emu/g、191 emu/g和197 emu/g。Fe75Co25、Fe66Co34、Fe52Co48的矫顽力分别为113 Oe、131 Oe和89.2 Oe。还改变了Fe52Co48纳米颗粒的合成时间（2小时和3小时）以确定最佳合成时间。合成2小时、3小时的Fe52Co48的饱和磁化强度分别为243 emu/g、202 emu/g。合成2小时和3小时的Fe52Co48的矫顽力分别为46 Oe和111 Oe。使用2小时的合成时间可获得最高的饱和磁化强度和最低的矫顽力。基于这些结果，证实了在所有测试成分中，Fe52Co48具有最高的饱和磁化强度和最低的矫顽力，且最佳合成时间为2小时。
