Synthesis and characterization of bismuth ferrite particles using a nano-agitator bead mill
Synthesis and characterization of bismuth ferrite particles using a nano-agitator bead mill
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DOI：
10.1063/5.0132099
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发表时间：
2023-03
期刊：
影响因子：
1.6
通讯作者：
Lyndon Smith;J. Shield;Z. Ahmadi;S. Jeelani;V. Rangari
中科院分区：
文献类型：
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作者：
Lyndon Smith;J. Shield;Z. Ahmadi;S. Jeelani;V. Rangari
采用一种新型的纳米搅拌球磨-焙烧法制备了铋铁氧体(BiFeO3)纳米复合材料。将氧化铋和氧化铁纳米颗粒按化学计量比混合，球磨3h，在650℃的空气中焙烧。用Rietveld精细X射线衍射仪、扫描电子显微镜和透射电子显微镜技术对BiFeO_3的结构进行了表征。结果表明，其粒径为∼17 nm。进行了磁学和电学测量，并与类似方法的结果进行了比较。主要产物为BiFeO_3，并有少量的第二相生成。所得粉末为弱铁磁性粉末，其剩余磁化强度为0.078 emu/g，这可归因于球磨过程中引入的残余应变和缺陷。电学测试表明，未掺杂铋铁氧体具有很高的漏电流密度。
Bismuth ferrite (BiFeO3) nanocomposites were synthesized using a novel nano-agitator bead milling method followed by calcination. Bismuth oxide and iron oxide nanoparticles were mixed in a stoichiometric ratio and milled for 3 h and calcined at 650 °C in air. X-ray diffraction with Rietveld refinement, scanning electron microscopy, and transmission electron microscopy techniques were used to elucidate the structure of BiFeO3. The particle diameter was found to be ∼17 nm. Magnetic and electrical measurements were performed, and these results were compared with those of similar methods. Mostly, BiFeO3 was obtained with minor secondary phase formation. The resulting powder was weakly ferromagnetic with a remnant magnetization of 0.078 emu/g. This can be attributed to residual strain and defects introduced during the milling process. Electrical testing revealed a high leakage current density that is typical of undoped bismuth ferrite.