高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (12): 1827.

• 论文 •    下一篇

Ni的掺入对复合氧化物LaFeO3的结构及性质的影响

李莉萍1, 魏诠2, 徐笑春1, 于江鹏1, 康志健3, 苏文辉1   

  1. 1. 吉林大学物理系, 长春, 130023;
    2. 吉林大学分析测试中心, 长春, 130023;
    3. 吉林大学化学系, 长春, 130023
  • 收稿日期:1995-01-16 修回日期:1995-04-28 出版日期:1995-12-24 发布日期:1995-12-24
  • 通讯作者: 魏诠
  • 作者简介:李莉萍,女,32岁,硕士,讲师.
  • 基金资助:

    国家自然科学基金

Effect of Ni Addition on Crystal Structure and Properties of LaFeO3

LI Li-Ping1, WEI Quan2, XU Xiao-Chun1, YU Jiang-Peng1, KANG Zhi-Jian3, SU Wen-Hui1   

  1. 1. Department of Physics, Jilin University, Changchun, 130023;
    2. Center of Measurement and Analysis, Jilin University, Changchun, 130023;
    3. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1995-01-16 Revised:1995-04-28 Online:1995-12-24 Published:1995-12-24

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摘要： 合成了Ni替代铁酸稀土复合氧儿物LaFe1-xNixO3(x=0.1～0.6),对样品进行了XRD、IR及Mössbauer谱测试。结果表明:x=0.1,0.2,0.3的样品为正交相,x=0.5,0.6的样品为菱方相;伴随结构从正交向菱方结构的转变,IR谱上Fe(Ni)-O键伸缩振动谱带向高频移动近20cm-1.Mössbauer谱测试表明Fe均处于+3价高自旋态,Ni离子以+3价进入晶格。

关键词: LaFe1-xNixO3, 结构转变, 57FeMö, ssbauer谱

Abstract: Pervoskite oxides of LaFe1-xNixO3(x=0.1～0.6)were prepared by the solid state reaction method.The XRD, IRand Mossbauer measurements show that the samples are all in single phase except for x=0.4; their structures transform from orthorhombic to rhomhombic at x=0. 5.The frequency of Fe(Ni)-Ostretching vibration shifts to a high frequency about 20 cm-1with a structure transformation. Fe ions are all in high spin state of +3 valence and Ni ions incorporated in lattice are in +3 valence.

Key words: LaFe1-xNixO3, Structure transformation, 57Fe Mö, ssbauer spectrum

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