Synthesis of CoFe2O4/BaTiO3 Core-Shell Composite Nanoparticles

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• 作者：Weipeng Wang^a ; ^b ; Hua Yang^a ; ^b ; ^hyang@lut.cn ; Tao Xian^a ; ^b
• 关键词：CoFe2O4/BaTiO3 composite particles ; core-shell structure ; polyacrylamide gel method
• 刊名：Procedia Engineering
• 出版年：2012
• 出版时间：2012
• 年：2012
• 卷：27
• 期：Complete
• 页码：604-609
• 全文大小：477 K

文摘

It is important to prepare ideal 0-3 type magnetoelectric nanocomposites for promoting the multiferroic technological applications; however, the processing technology has become a big challenge. The key point to achieve the synthesis of 0-3 type magnetoelectric composites is the creation of ferromagnetic/ferroelectric composite nanoparticles with core-shell structure. In this work, core-shell structured CoFe2O4/BaTiO3 nanoparticles were synthesized in two steps. CoFe2O4 nanoparticles were firstly prepared through a polyacrylamide gel method, and then were coated with BaTiO3 layers using the same gel route. It is demonstrated that the as-prepared composite particles are an evident core-shell structure, where the core and the shell are determined to be CoFe2O4 and BaTiO3, respectively. The composite particles are nearly spherical in shape with a narrow particle size distribution.