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人工晶体学报 ›› 2009, Vol. 38 ›› Issue (6): 1532-1535.

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钙钛矿型层状化合物K_2Ln_2Ti_3O_(10)(Ln=La,Pr,Sm,Eu,Gd)X射线衍射晶体结构分析

史昆波;张莉莉   

  1. 淮阴师范学院江苏省低维材料化学重点建设实验室,淮安,223300
  • 出版日期:2009-12-15 发布日期:2021-01-20

XRD Analysis of Peroskite-type Larged Compound K_2Ln_2Ti_3O_(10) (Ln=La,Pr,Sm,Eu,Gd)

SHI Kun-bo;ZHANG Li-li   

  • Online:2009-12-15 Published:2021-01-20

摘要: 固相反应法合成了具有钙钛矿型层状的化合物K_2Eu_2Ti_3O_(10) 和K_2Gd_2Ti_3O_(10) ,利用X射线粉晶衍射仪对镧系元素的钙钛矿型层状化合物K_2Ln_2Ti_3O_(10) (Ln=Eu,Gd)进行结构分析,获得其X射线粉晶衍射数据.X射线衍射分析结果表明:K_2Ln_2Ti_3O_(10) (Ln= La,Pr,Sm,Eu,Gd )为四方晶系,空间群I4/mmm.并得到其晶胞参数及其镧系元素的钙钛矿型层状化合物K_2Ln_2Ti_3O_(10) 晶体结构变化规律.

关键词: K_2Ln_2Ti_3O_(10);X射线衍射;晶体结构;晶胞参数

Abstract: Series of layered perovskites K_2Eu_2Ti_3O_(10) and K_2Gd_2Ti_3O_(10) was fabricated by solid state reaction.The obtained products were characterized by X-ray diffraction (XRD) and inductively coupled plasma (ICP) techniques. The crystal structure of K_2Ln_2Ti_3O_(10) (Ln=Eu,Gd) series has been analyzed and the crystal parameters and indexed dates were obtained. The XRD results indicated that the K_2Ln_2Ti_3O_(10) (Ln=La,Pr,Sm,Eu and Gd) belonged to tetragonal crystal lattice and had I4/mmm space group, unit cell parameter. The cell parameters and the evolution of K_2Ln_2Ti_3O_(10) were gained.

Key words: Series of layered perovskites K_2Eu_2Ti_3O_(10) and K_2Gd_2Ti_3O_(10) was fabricated by solid state reaction.The obtained products were characterized by X-ray diffraction (XRD) and inductively coupled plasma (ICP) techniques. The crystal structure of K_2Ln_2Ti_3O_(10) (Ln=Eu,Gd) series has been analyzed and the crystal parameters and indexed dates were obtained. The XRD results indicated that the K_2Ln_2Ti_3O_(10) (Ln=La,Pr,Sm,Eu and Gd) belonged to tetragonal crystal lattice and had I4/mmm space group, unit cell parameter. The cell parameters and the evolution of K_2Ln_2Ti_3O_(10) were gained.

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