酸洗氧化铁及铁氧体的穆斯堡尔谱研究  

Mssbauer Studies on Pickling Iron Oxide and Mn-Zn Ferrite

作　　者：于成峰[1,2] 高晋生[1] 李玉光[2] 蒋冬梅[3] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237 [2]宝山钢铁股份有限公司技术质量部,上海201900 [3]华东师范大学物理系,上海200062

出　　处：《华东理工大学学报（自然科学版）》2010年第2期244-247,共4页Journal of East China University of Science and Technology

摘　　要：用扫描电镜和激光粒度分析仪对酸再生法制备的氧化铁粉样品进行了微观结构和粒度分析;并用穆斯堡尔谱(Mssbauer)仪对酸再生氧化铁及锰锌铁氧体样品在室温下的超精细场变化进行了研究。结果显示作为对照的进口酸洗氧化铁具有比较均匀的小颗粒分布;而进口、国产样品的穆斯堡尔谱的四极分裂都较小,表明酸洗氧化铁粉铁周围的电场对称性较好。穆斯堡尔谱图及参数表明:相比于主要原料氧化铁,锰锌铁氧体中的磁性相Fe周围的配位环境已相应改变。随锌含量的增加,二线谱的比例显著增加;当锰含量比例较低时,锰锌的加入更倾向于形成尖晶石结构的铁氧体。The microstructure and particle size of the acid regeneration iron oxide samples were observed with SEM and laser particle size analyzer.The hyperfine field variations of acid regeneration iron oxide and Mn-Zn ferrite samples were investigated with Mssbauer spectra at room temperature.The results show that the referenced imported iron oxide has smaller particle with uniform distribution.The quadrupole splitting value of pickling iron oxide is small,and the electric field symmetry around pickling iron oxide is good.The Mssbauer spectra and its parameters of Mn-Zn ferrite show that the coordination environment around magnetic phase of Fe in Mn-Zn ferrite is different from iron oxide.For the Mn-Zn ferrite,it＇s appeared that a high-proportion doublet is observed with an increasing concentration of Zn.And when the concentration of Mn is in low-ratio,a spinel structure of Mn-Zn ferrite is inclined to form.

关 键 词：氧化铁 穆斯堡尔谱 锰锌铁氧体 磁性材料 

分 类 号：O641[理学—物理化学]