摘要
应用溶胶－凝胶技术制备纳米钡铁氧体，研究溶胶组成对钡铁氧体生成过程的影响．由定量的Ｆｅ（ＯＨ）３、ＢａＣＯ３、适量的柠檬酸和乙二醇络合剂组成的溶胶，使整个反应过程中避免了α－Ｆｅ２Ｏ３相的产生，在９００℃就得到了纯净单一，粒度为１０１ｎｍ，比饱和磁化强度为６９．８Ａｍ２·ｋｇ－１，矫顽力为４７３．
Barium hexaferrite nanoparticles are prepared using sol gel technique. Influence of the sol composition on formation process of barium hexaferrite is studied. If the sol is composed of the fixed quantitative Fe(OH) 3, BaCO 3, suitable amount of citric acid and ethylene glycol complex compound, the formation of α Fe 2O 3 intermediate can be prevented in reaction process. Ultrafine particles of BaFe 12 O 19 single crystal with an average size of 101 nm, a coercive force of 473.7 kA·m -1 and a specific saturation magnetization of 69.8 Am 2·kg -1 can be obtained at 900 ℃.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
1999年第1期26-28,共3页
Journal of Yangzhou University：Natural Science Edition
基金
国家"八五"(85-6)攀登计划基金
国家自然科学基金
