Magnetic properties of ZnFe2O4 nanoparticles produced by a low-temperature solid-state reaction method

作者：Li Fashen; Wang Haibo; Wang Li; Wang Jianbo

来源：Journal of Magnetism and Magnetic Materials, 2007, 309(2): 295-299.

DOI：10.1016/j.jmmm.2006.07.012

• low-temperature solid-state reaction
• zinc ferrite
• Mossbauer spectra

ZnFe2O4 nanoparticles with average grain size ranging from 40 to 60 nm behaving superparamagnetic at room temperature have been produced using a low-temperature solid-state reaction (LTSSR) method without ball-milling process. Abnormal magnetic properties such as S-shape hysteresis loops and non-zero magnetic moments were observed. ZnFe2O4 nanoparticles were also synthesized using a NaOH coprecipitation method and a PVA sol-gel method to study the relationship between the preparation processes and the magnetic properties. Spin-glass behavior was observed in the low temperature solid-state reaction produced Zn ferrite in the zero-field cooled (ZFC) measurement. Our work proves that the various preparation methods will to some extent determine the properties of magnetic nanoparticles.

• 出版日期2007-2
• 单位兰州大学