物理化学学报 >> 2011, Vol. 27 >> Issue (04): 990-994.doi: 10.3866/PKU.WHXB20110428

材料物理化学 上一篇    

Pb1-xTbxTi1-xMnxO3 (0≤x≤0.10)固溶体的合成、结构与表征

范敏2, 李国宝1, 王东伟3, 金头男2, 廖复辉1, 林建华1   

  1. 1. 北京大学化学与分子工程学院, 北京分子科学国家实验室, 稀土材料化学及应用国家重点实验室, 北京 100871;
    2. 北京工业大学材料科学与工程学院, 北京 100022;
    3. 国家纳米科学中心, 北京 100190
  • 收稿日期:2010-12-27 修回日期:2011-02-15 发布日期:2011-03-29
  • 通讯作者: 李国宝, 金头男, 林建华 E-mail:liguobao@pku.edu.cn; tnjinkim@bjut.edu.cn; jhlin@pku.edu.cn
  • 基金资助:

    国家自然科学基金(20771008), 北京市教委重点基金(KM201010005019)和科技部重大研究计划(2010CB833103)资助项目

Synthesis, Structure and Characterization of Pb1-xTbxTi1-xMnxO3 (0≤x≤0.10) Solid Solutions

FAN Min2, LI Guo-Bao1, WANG Dong-Wei3, JIN Tou-Nan2, LIAO Fu-Hui1, LIN Jian-Hua1   

  1. 1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China;
    2. College of Material Science and Engineering, Beijing University of Technology, Beijing 100022, P. R. China;
    3. National Center for Nanoscience and Technolgy, Beijing 100190, P. R. China
  • Received:2010-12-27 Revised:2011-02-15 Published:2011-03-29
  • Contact: LI Guo-Bao, JIN Tou-Nan, LIN Jian-Hua E-mail:liguobao@pku.edu.cn; tnjinkim@bjut.edu.cn; jhlin@pku.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20771008), Scientific Research Key Program of Beijing Municipal Commission of Education, China (KM201010005019), and National Key Basic Research Project of China (2010CB833103).

摘要:

用固相反应合成了Pb1-xTbxTi1-xMnxO3 (0≤x≤0.10)固溶体, 并用X射线粉末衍射进行了表征, 室温下其空间群为P4mm. 热分析仪测试结果显示, 随着Tb和Mn掺杂量的增加, 该固溶体的相变温度Tc降低. 介电常数在Tc附近出现峰值, 表明对应的相变是铁电相变. 磁性测量显示, 当x=0.08和x=0.10时, Pb1-xTbxTi1-xMnxO3分别在25和29 K附近有顺磁性向反铁磁性的转变.

关键词: 固相反应, PbTiO3, 相变, 铁电, TbMnO3

Abstract:

Solid solutions of Pb1-xTbxTi1-xMnxO3 (0≤x≤0.10) were synthesized by a traditional solid state reaction and characterized by powder X-ray diffraction. The solutions crystallize in the P4mm space group at room temperature. Differential scanning calorimetry (DSC) measurements were performed to obtain phase transition temperatures (Tc) for the samples, and these were found to decrease with an increase in the amount of doped Tb and Mn. The temperature dependent dielectric constant shows a peak close to the Tc, indicating that the corresponding phase transition is a ferroelectric phase transition. Magnetic measurements indicate that a paramagnetic to antiferromagnetic phase transition occurs at 25 and 29 K for Pb1-xTbxTi1-xMnxO3 with x=0.08 and x=0.10, respectively.

Key words: Solid-state reaction, PbTiO3, Phase transition, Ferroelectrics, TbMnO3

MSC2000: 

  • O641