Title :
Low temperature Sol-gel autocombustion synthesis and magnetic properties of magnetite
Author :
Zhang, X. ; Hua, Z. ; Yang, S.
Author_Institution :
Sch. of Phys. & Nat. Lab. of Solid State Microstructures, Nanjing Univ., Nanjing, China
Abstract :
A new method, sol-gel autocombustion, is employed in the synthesis of magnetite (Fe3O4) by using citric acid and ferric nitrate as starting materials. Experimental results show that pure magnetite can be synthesized at a very low temperature in a large range of molar ratio of ferric nitrate to citric acid. The XRD results illustrate that the prepared samples have pure Fe3O4 phase. Electron microscopy studies show us the samples with porous morphology. VSM results show us ferrimagnetic property of the samples at room temperature with the saturation magnetization as high as 86 emu/g.
Keywords :
X-ray diffraction; combustion synthesis; ferrimagnetic materials; iron compounds; magnetisation; magnetometers; porous materials; powder technology; sol-gel processing; Fe3O4; VSM; XRD; citric acid; electron microscopy; ferric nitrate; ferrimagnetic property; low temperature sol-gel autocombustion synthesis; magnetic properties; magnetite; molar ratio; porous morphology; saturation magnetization; temperature 293 K to 298 K; Combustion; Magnetic hysteresis; Magnetic properties; Metals; Saturation magnetization; Temperature; X-ray scattering;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156745
