Nonstoichiometric M-ferrite porous spheres: preparation, shape evolution and magnetic properties. Issue 2 (March 2015)

• Record Type: Journal Article
• Authors: Yang, Li-Xia; Xu, Yan-Bin; Jin, Ren-Cheng; Wang, Feng; Yin, Ping; Li, Gui-Hua; Xu, Chuan-Peng; Pan, Li-Bing
• Is Part Of: Ceramics international. Volume 41:Issue 2(2015)Part A
• Page Start: 2309
• Page End: 2317
• Publication Date: 2015-03
• Subjects: Magnetic materials -- Chemical synthesis -- Microstructure -- Magnetic properties; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2014.10.037
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: We developed a simple one-pot solvothermal process to prepare porous M-ferrite (M=Ni, Zn, Co, Mn, Mg) magnetic spheres using different M 2+ and Fe 3+ with the introduction of dodecylamine. As-prepared ferrites were characterized in detail by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and selective area electron diffraction (SAED). XRD and EDS results showed that M-ferrites were nonstoichiometric in nature. Monodispersed magnetic ferrite spheres had a size distribution of 100–500 nm with different composition of M 2+ . Morphology evolution of ferrites upon reaction time and different metal doping has been studied. Furthermore, magnetic properties of M-ferrite spheres could be tuned by changing substituted metal cations. The influence of calcination on the phase and magnetic property was also investigated.