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首页> 外文期刊>Materials Chemistry and Physics >Synthesis, structure refinement and vibrational spectroscopy studies of the Bi_(1-x)Ta_(1-x)Te_(2x)O_4 (0 ≤ x ≤ 0.2) solid solution with stibiotantalite type structure
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Synthesis, structure refinement and vibrational spectroscopy studies of the Bi_(1-x)Ta_(1-x)Te_(2x)O_4 (0 ≤ x ≤ 0.2) solid solution with stibiotantalite type structure

机译:锶钽铁矿型Bi_(1-x)Ta_(1-x)Te_(2x)O_4(0≤x≤0.2)固溶体的合成,结构优化和振动光谱研究

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摘要

In the present study we report the synthesis, crystal structure and vibrational spectroscopy studies of Bi_(1-x)Ta_(1-x)Te_(2x)O_4 orthorhombic solid solutions (0 ≤ x ≤ 0.2). Rietveld refinements showed that this solid solution is continuous adopting Pnna (no.52) space group. The structure is formed by (Bi/Te~((1)))O_6 and (Ta/Te~((2)))O_6 octahedra, The (Ta/Te~((2)))O_6 octahedra linked over four comers and thus the structure can be viewed as consisting of sheets of [(Ta/Te~((2)))O_6]~(3-) units separated by Bi~(3+) cations. The infrared spectra of Bi_(1-x)Ta_(1-x)Te_(2x)O_4 oxides at room temperature showed some characteristic vibration bands assigned to Bi -O and Ta-O vibrations. Raman spectra of this crystalline solid solution series are interpreted by means of "internal mode" approach. Assignments of the Ta-O and Bi-O vibrational stretching modes, as well as some of other modes, have been made.
机译:在本研究中,我们报告了Bi_(1-x)Ta_(1-x)Te_(2x)O_4正交晶固溶体(0≤x≤0.2)的合成,晶体结构和振动光谱研究。 Rietveld的改进表明,这种固溶体是连续采用Pnna(第52号)空间群的。该结构由(Bi / Te〜(((1)))O_6和(Ta / Te〜(((2)))O_6八面体形成,(Ta / Te〜(((2)))O_6八面体连接在四个角上因此,该结构可以看作是由被Bi〜(3+)阳离子隔开的[(Ta / Te〜((2)))O_6]〜(3-)单元片组成。室温下Bi_(1-x)Ta_(1-x)Te_(2x)O_4氧化物的红外光谱显示了一些与Bi -O和Ta-O振动相关的特征振动带。该结晶固溶体系列的拉曼光谱通过“内部模式”方法解释。已经指定了Ta-O和Bi-O振动拉伸模式以及其他一些模式。

著录项

  • 来源
    《Materials Chemistry and Physics》 |2012年第3期|241-248|共8页
  • 作者单位

    Laboratoire de Chimie Analytique et Physico- chimie des Materiaux-Departement de Chimie, Faculty des Sciences Ben M'sik, University Hassanll-Mohammedia Casablanca, Morocco;

    CNRS, UPR3079 CEMHTI, 1D avenue de la Recherche Scientifique, 45071 Orleans cedex2, France,Universite d'Orleans, Faculte des Sciences, Avenue du Parc Floral, BP 6749, 45067 Orleans cedex 2, France;

    Laboratoire de Chimie Analytique et Physico- chimie des Materiaux-Departement de Chimie, Faculty des Sciences Ben M'sik, University Hassanll-Mohammedia Casablanca, Morocco;

    Laboratoire de Chimie Analytique et Physico- chimie des Materiaux-Departement de Chimie, Faculty des Sciences Ben M'sik, University Hassanll-Mohammedia Casablanca, Morocco;

    Laboratoire de Chimie Analytique et Physico- chimie des Materiaux-Departement de Chimie, Faculty des Sciences Ben M'sik, University Hassanll-Mohammedia Casablanca, Morocco;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    BiTaO_4; TeO_2; stibiotantalite; crystal structure; infra-red absorption; raman spectroscopy;

    机译:BiTaO_4;TeO_2;锑钛矿;晶体结构红外吸收拉曼光谱;

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