| 钙钛矿型稀土碱土铌酸盐的合成、结构和光谱性质 |
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| 引用本文： | 张静筠,路锋,苏锵.钙钛矿型稀土碱土铌酸盐的合成、结构和光谱性质[J].应用化学,1987,0(6):14-17. |
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| 作者姓名： | 张静筠 路锋 苏锵 |
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| 作者单位： | 中国科学院长春应用化学研究所 |
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| 摘 要： | 本文着重研究稀土碱土铌酸盐体系M2Y0.94RE0.06NbO6(M=Ca、Sr、Ba;RE=Eu.Sm、Dy)的合成、结构与光谱性质及其变化规律。Ca2Y0.94RE0.06NbO6为畸变的钙钛矿型结构,属单斜晶系,空间群C2或Cs;Sr(Ba)2Y0.94RE0.06NbO6为立方有序的钙钛矿型结构,空间群Oh。随着Ba-Sr-Ca的次序Eu3+的红发射增强,Sm3+的橙发射增强,Dy3+的黄发射增强。
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| 收稿时间： | 1986-09-17 |
| 修稿时间： | 1987-03-30 |
PREPARTION,CRYSTAL STRUCTURE AND SPECTRA OF RARE EARTH-ALKALINE EARTH NIOBATE OF PEROVSKITE TYPE |
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| Zhang Jingjun,Lu Feng,Su Qiang.PREPARTION,CRYSTAL STRUCTURE AND SPECTRA OF RARE EARTH-ALKALINE EARTH NIOBATE OF PEROVSKITE TYPE[J].Chinese Journal of Applied Chemistry,1987,0(6):14-17. |
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| Authors: | Zhang Jingjun Lu Feng Su Qiang |
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| Institution: | Changchun Institute of Applied Chemistry, Academia Sinica |
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| Abstract: | In this paper, the preparation, crystal structure and spectral properties of M2Y0.94-RE0.06NbO6 (M=Ca, Sr, Ba; RE=Eu, Sm, Dy) have been studied. The X-ray powder diffraction data and Eu3+-emission spectra showed that Ca2Y0.94Eu0.06NbO6 with distorted perovskite structue belongs to monoclinic system, the site symmetry may be C2 or Cs; Sr2Y0.94-Eu0.06NbO6 and Ba2Y0.94Eu0.06 NbO6 with ordered perovskite structure belong to cubic system the site symmetry may be Oh. It is found that the spectral properties of Eu3+, Sm3+ and Dy3+ intensify regularly in order of Ba-Sr-Ca. |
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