Sr／Pb的比例对钛酸锶铅结构的影响

广东工业大学学报 ›› 2010, Vol. 27 ›› Issue (1): 25-27.

Sr／Pb的比例对钛酸锶铅结构的影响

广东工业大学物理与光电工程学院，广东广州 510006

出版日期:2010-03-25 发布日期:2010-03-25
作者简介:贾继扩(1982-)，男，硕士研究生，主要研究方向为稀土掺杂发光材料

Effects of Sr／Pb Ratio on Pb Sr1-TiO3 Crystal Stuctures

Faculty of Physics and Optoelectronic Engineering，Guangdong University of Technology，Guangzhou 510006，China

Online:2010-03-25 Published:2010-03-25

摘要/Abstract

摘要： 采用溶胶一凝胶法制备了具有不同锶铅配比的钛酸锶铅粉末(Pb Sr TiO ， =0．4，0．5，0．6)．样品在900℃的温度下进行了退火．用x射线衍射(XRD)研究了样品的晶体结构．结果发现随着铅含量比例的增大，衍射峰逐渐分裂为两个峰，且分裂峰之间的间隔越来越大．对样品的(001／100)峰进行了双峰拟合，由拟合结果得到了样品的晶格常数，结果表明样品中品格常数C和rz之比也随铅掺杂比例的增大而增大，晶胞体积变大．表明随铅含量的增加材料从立方结构逐渐向四方结构转变．

关键词: 钛酸锶铅；溶胶一凝胶法；相变；x射线衍射

Abstract: Abstract：A Sol-gel method was used to prepare Pb Sr1-TiO3 powder，in which the contents of Sr and Pb were different(=0．4，0．5，0．6)．Powders were annealed at 900 oC．Their crystallographic structures were characterized by X-ray diffraction．XRD patterns showed the diffraction peak was splited into two and the distance of the two peaks(101／1 10)gradually increased with increasing molar ratio of Pb／Sr．The lattice parameters were calculated
from the split peaks of(001／100)．Experimental resuhs show that lattice constant ratio c／a and the cell volume increase with increasing Pb content，indicating a phase transition from a cubic phase to tetragonal phase．

Key words: Pb Sr1-TiO3；Sol-gel method；phase transition；XRD(X-ray diffraction)

贾继扩, 罗莉, 吴浩怡. Sr／Pb的比例对钛酸锶铅结构的影响[J]. 广东工业大学学报, 2010, 27(1): 25-27.

JIA Ji-Kuo, LUO Li, WU Hao-Yi. Effects of Sr／Pb Ratio on Pb Sr1-TiO3 Crystal Stuctures[J]. Journal of Guangdong University of Technology, 2010, 27(1): 25-27.

参考文献

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[3]方芳，吕忆农，徐明，等．超声化学法快速形成钛酸锶铅纳米粉[J]．硅酸盐学报，2007，35(10)：1306-1311．

[4]张明福，梁延峰，赫晓东，等．自燃烧合成(sr，Pb)TiO，及其阻温特性[J]．电子元件与材料，2000，19(3)：13-16．

[5]赵丽丽，王雪文，张志勇，等．溶胶一凝胶法制备(Sr，Ph)TiO 纳米晶粉及表征[J]．功能材料，2002，33(4)：410-412．

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