Study of the correltion between temperature and magnetic properties of Dy3+-doped ferrite nanoparticles
YANG Chong1, CHEN Jing2, LIU Zi-yan1，ZHANG Mao-run1
1.School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui,China 2.Sinosteel Anhui Tianyuan Technoiogy Co.Ltd, Maanshan 243000, Anhui, China
Abstract：Dy3+-doped ferrite nano-particles were prepared by the liquid phase coprecipitation method, the size of particles is about 17 nm. The effect of temperatures on magnetic properties of the sample were investigated in the range of -60 ℃ and 85 ℃. The morphology, structure, magnetic properties of the products were characterized by transmission electron microscopy(TEM), ray-diffraction(XRD),and super-conducting quantum interference device (SQUID). The results show that the major diameter of particles is about 15～18 nm，morphology of magnetic particles are spherical with face-centered cubic spinel structure. The saturation magnetization (Ms) and the coercitivity (Hc) of the sample increase with the decrease of temperature, Ms and Hc of the sample increase greet in the range 20 ℃ and -60 ℃.
杨冲，陈静，刘紫燕，张茂润. 纳米掺镝铁氧体颗粒的磁特性与温度的相关性[J]. , 2015, 22(3): 6-9.
YANG Chong, CHEN Jing, LIU Zi-yan，ZHANG Mao-run. Study of the correltion between temperature and magnetic properties of Dy3+-doped ferrite nanoparticles. , 2015, 22(3): 6-9.
Milos Bekovic, Mladen Trlep, Marko Jesenik, et al..An experimental study of magnetic field and temperature dependence on magnetic fluid’s heating power [J]. Journal of Magnetism and Magnetic Materials, 2013(331): 264-268.
M.M. Elokr, M.A.Salem, M.S.Salim, et al. Synthesis of cobalt ferrite nano-particles and their magnetic characterization[J]. Journal of Magnetism and Magnetic Materials, 2011, 323: 920-926.
[8]
Mathur P, Thakur A,Singh,M. Low temperature synthesis of Mn0.4Zn0.6In0.5Al0.1Fe1.4O4 nano-ferrite and characterization for high frequency applications [J]. EPJ Applied Physics, 2008,41(2):133-138.
[9]
Shivaji R. Kulal ,Sanjay S. Khetre, Pramod N. Jagdale ,et al. Synthesis of Dy doped Co–Zn ferrite by sol–gel auto combustion method and its characterization [J]. Materials Letters, 2012, 84:169-172.
2015, Vol. 22 
