基于“种子-生长”的液相法制备的CoFe_(2)O_(4)纳米颗粒及磁性能  

Preparation of CoFe_(2)O_(4) nanoparticles based on the liquid phase method from"seed-growth"and its magnetic properties

作　　者：王焱 冯治棋[1,2] 左显维 李昕[1,2] 刘一丹 何欣 WANG Yan;FENG Zhi-qi;ZUO Xian-wei;LI Xin;LIU Yi-dan;HE Xin(Institute of Sensor Technology,Gansu Academy of Sciences,Lanzhou 730000,China;Key Laboratory of Sensor and Sensing Technology of Gansu Province,Lanzhou 730000,China)

机构地区：[1]甘肃省科学院传感技术研究所,甘肃兰州730000 [2]甘肃省传感器与传感技术重点实验室,甘肃兰州730000

出　　处：《磁性材料及器件》2024年第3期21-26,共6页Journal of Magnetic Materials and Devices

基　　金：兰州市城关区科技计划项目(2021JSCX0047);兰州市青年科技人才创新项目(2023-QN-110);甘肃省科技计划项目青年科技基金(22JR11RA207);甘肃省科学院科技产业化项目(2021CY03)。

摘　　要：依据不同的应用需求,实现纳米材料颗粒尺寸和形状的可控制备一直是材料制备领域研究的重点。为了研究CoFe_(2)O_(4)纳米颗粒尺寸和形状对于磁性能的影响,本文分别通过传统的液相法和基于“种子-生长”的液相法制备出了不同颗粒尺寸和形状的CoFe_(2)O_(4)纳米颗粒并研究其磁性能。结果表明:CoFe_(2)O_(4)颗粒的尺寸和形状变化会影响纳米颗粒的分散性和矫顽力。其中,通过“种子-生长”的液相法制备的六边形CoFe_(2)O_(4)纳米颗粒的矫顽力在室温下可达383Oe,80K时高达13105Oe。Controllable preparation of nanomaterials with various sizes and shapes has always been the key research in the field of material preparation due to different application requirements.To further study the effect of sizes and shapes of CoFe_(2)O_(4) nanoparticles on its magnetic properties,CoFe_(2)O_(4) nanoparticles with different sizes and shapes were prepared by the conventional liquid phase method and the"seed-growth"liquid phase method in this paper,and the magnetic properties were studied.As a result,the change of sizes and shapes for CoFe_(2)O_(4) nanoparticles can influence the dispersion and coercivity of nanoparticles.Among them,the coercivity of the hexagonal CoFe_(2)O_(4) nanoparticles prepared by the"seed-growth"liquid phase method can reach 383 Oe at room temperature and as high as 13105 Oe at 80 K.

关 键 词：CoFe_(2)O_(4)纳米颗粒 液相法 “种子-生长”法 形状 磁性能 

分 类 号：O469[理学—凝聚态物理] O441.2[理学—电子物理学]