Magnetic properties and special morphology of barium ferrite via electrospinning

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• 作者：Gui-Fang Liu ; Run-Hua Fan ; Zi-Dong Zhang ; Jing Li ; Min Chen ; Qian-Qian Li&#8230
• 关键词：Electrostatic spinning ; Barium ferrite ; Hollow fiber ; Ribbon fiber
• 刊名：Rare Metals
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：36
• 期：2
• 页码：113-117
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials; Nanotechnology; Ceramics, Glass, Composites, Natural Materials; Surfaces and Interfaces, Thin Films; Inorganic Chemistry; Physical Chemistry;
• 出版者：Nonferrous Metals Society of China
• ISSN：1867-7185
• 卷排序：36

文摘

Barium ferrite micro-/nanofibers with special morphology, nanowires with diameters of 100 nm, nanoribbons with diameters of 1 μm, and nanotubes with outer diameter of about 300 nm while inner diameter of 100 nm were successfully prepared via electrospinning using different solvents (dimethyl formamide (DMF), solutions of deionized water and ethyl alcohol, and solutions of deionized water and acetic acid, respectively). The barium ferrite micro-/nanofibers were characterized by scanning electron microscope (SEM), X-ray diffraction analysis (XRD), and vibration sample magnetometer (VSM). The results demonstrate that the pure BaFe₁₂O₁₉ ferrite phase is successfully formed. And the SEM results show excellent morphologies. The magnetic hysteresis loops demonstrate that their magnetic properties are quite different with different morphologies. The specific saturation magnetization is approximately the same (46.12–49.17 A·m2·kg−1), but the coercivity of the BaFe₁₂O₁₉ increases from wires (190.08 kA·m−1), ribbons (224.16 kA·m−1) to tubes (258.88 kA·m−1).