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化学镀工艺制备Mn-Zn铁氧体薄膜的结构和^57Fe背散射穆斯堡尔谱研究
  • ISSN号：0023-074X
  • 期刊名称：《科学通报》
  • 时间：0
  • 分类：O484.1[理学—固体物理;理学—物理]
  • 作者机构：[1]兰州大学物理科学与技术学院,磁学与磁性材料教育部重点实验室,应用磁学研究所,兰州730000
  • 相关基金：国家自然科学基金资助项目（批准号：90505007）.
作者： 孙建荣[1], 王学文[1], 刘锦宏[1], 王建波[1], 李发伸[1]
关键词： MN-ZN铁氧体, 薄膜, 背散射穆斯堡尔谱, 化学镀
中文摘要：

用水溶液化学镀工艺制备了不同膜厚,不同Zn含量的Mn1-xZnxFe2O4铁氧体薄膜.XRD衍射图像表明,通过化学镀工艺制备的薄膜样品呈现单一的尖晶石结构,是没有杂相和择优取向的多晶Mn-Zn铁氧体薄膜.SEM照片显示结晶良好的柱状晶垂直于玻璃基底生长.^57Fe背散射穆斯堡尔谱的测量表明,化学镀工艺制得的Mn1-xZnxFe2O4铁氧体纳米晶薄膜的阳离子分布不同于块体材料;其占据四面体A位的Fe^3＋离子数目远高于块体材料,并由此导致薄膜样品的Ms明显地小于相应成分的块体值;随着Zn含量的增加,Zn^2＋对于A位表现出强烈的化学亲和性而优先占据A位,致使Fe3＋不断地从四面体A位向八面体B位迁移;对于Mn0.5Zn0.5Fe2O4的样品,随着薄膜厚度的增加,B位的Fe^3＋数目增加,磁矩不再平行于薄膜平面排列并且磁矩与薄膜平面的夹角逐渐增大.宏观磁性测量结果表明,当x=0.5时,用水溶液化学镀工艺制备的Mn1-xZnxFe2O4的饱和磁化强度值最大,为419.6kA/m;而矫顽力则最小,为3.7kA/m.

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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
  • 邮编：100717
  • 邮箱：csb@scichina.org
  • 电话：010-64036120 64012686
  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
  • 首届国家期刊奖,中国期刊方阵“双高”期刊,第三届中国出版政府奖
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,美国数学评论（网络版）,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:81792