人工晶体学报2013，Vol.42Issue(2)：316-321,350,7.
聚丙烯酰胺凝胶法制备NiFe2O4纳米颗粒及性能
Preparation and Properties of NiFe2O4 Nanoparticles by a Polyacrylamide Gel Route
摘要
Abstract
A polyacrylamide gel route was used to prepare NiFe2O4 nanoparticles. The prepared samples were characterized by X-ray diffraction (XRD) , scanning electron microscope (SEM) , ultraviolet-visible diffuse reflectance spectroscopy, fourier transform infrared spectroscopy (FTIR) , X-ray photoelectron spectroscopy (XPS) , and vibrating sample magnetometer (VSM). It is demonstrated that single-phase NiFe2O4 nanoparticles can be prepared separately using ethylenediamine-tetraacetic acid (EDTA) and acetic acid as the chelating agent at a calcining temperature of 600 ℃. The two as-prepared samples have regular spherical particle shapes and uniform particle sizes with an average diameter of 55 run and 75 nm, respectively. The energy bandgap of the samples is estimated to be 1.85 eV by ultraviolet-visible diffuse reflectance spectroscopy. Fe 2p3/2 and Ni 2p3/2 XPS spectra reveal that the samples have an inverse spinel-type structure with the chemical formula (Fe3+ ) [Ni2+Fe3+ ]O4. Magnetic hysteresis loop measurements indicate that the samples exhibit good soft magnetic properties, and their saturation magnetization, remanent magnetization and coercivity have a decrease with decrease in particle size.关键词
铁酸镍/纳米颗粒/聚丙烯酰胺凝胶法/XPS/磁性Key words
nickel ferrite/nanoparticles/polyacrylamide gel method/XPS/magnetic properties分类
数理科学引用本文复制引用
赵东方,杨华,县涛,王伟鹏,魏智强,李瑞山,冯旺军,姜金龙..聚丙烯酰胺凝胶法制备NiFe2O4纳米颗粒及性能[J].人工晶体学报,2013,42(2):316-321,350,7.基金项目
国家自然科学基金(50962009,51262018) （50962009,51262018）
甘肃省自然科学基金(1010RJZA041) （1010RJZA041）
兰州理工大学红柳杰出人才培养计划(J201205) （J201205）
