Optical spectrum of Mn~(4+) in Y_2Ti_(2-x)Sn_xO_7 pyrochlore solid solution: R-line energy and intensity

Srivastava A. M.; Brik M. G.; Comanzo H. A.; Beers W. W.; Cohen W.; Cherepy N. J.; Payne S. A.

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Optical spectrum of Mn~(4+) in Y_2Ti_(2-x)Sn_xO_7 pyrochlore solid solution: R-line energy and intensity

机译：Y_2Ti_（2-x）Sn_xO_7烧绿石固溶体中Mn〜（4+）的光谱：R线能量和强度

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In this work, we investigated the luminescence of the Mn4+ ions in Y2Ti2-xSnxO7 (x = 0, 0.5, 1.0, 2.0) pyrochlore solid solutions and compared the results with the spectroscopic data of the two end members. The emission spectra in the mixed pyrochlore solid solutions are broadened relative to the end members due to long range disorder between the Sn4+ and Ti4+ ions. The R-line intensity is particularly weak in both Y2Sn2O7 and Y2Ti2O7. The increase in R-line intensity in the mixed pyrochlore solid solutions is attributed to the random distribution of Sn4+ and Ti4+ ions in the second coordination sphere (next nearest neighbors) that removes the inversion symmetry about the Mn4+ ion. We find a linear relation between the energy position of the R-line and x in Y2Ti2-xSnxO7 ((2)Eg (cm(-1)) = 15 010 + 163.0 x; R-2 = 0.98).

机译：在这项工作中，我们研究了Y2Ti2-xSnxO7（x = 0、0.5、1.0、2.0）烧绿石固溶体中Mn4 +离子的发光，并将结果与两个末端成员的光谱数据进行了比较。由于Sn4 +和Ti4 +离子之间的长距离无序，混合的烧绿石固溶体中的发射光谱相对于末端成员变宽了。在Y2Sn2O7和Y2Ti2O7中，R线强度特别弱。混合烧绿石固溶体中R线强度的增加归因于Sn4 +和Ti4 +离子在第二配位球体（下一个最近的邻域）中的随机分布，从而消除了关于Mn4 +离子的反对称性。我们在Y2Ti2-xSnxO7中找到R线的能量位置与x之间的线性关系（（2）Eg（cm（-1））= 15010 + 163.0 x; R-2 = 0.98）。

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《Optical Materials》 |2019年第9期|109196.1-109196.4|共4页
作者
Srivastava A. M.; Brik M. G.; Comanzo H. A.; Beers W. W.; Cohen W.; Cherepy N. J.; Payne S. A.;
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作者单位

GE Global Res One Res Circle Niskayuna NY 12309 USA;

Chongqing Univ Posts & Telecommun Coll Sci Chongqing 400065 Peoples R China|Univ Tartu Inst Phys W Ostwald Str 1 EE-50411 Tartu Estonia|Jan Dlugosz Univ Inst Phys Armii Krajowej 13-15 PL-42200 Czestochowa Poland;

Current Powered GE Current & Lighting Cleveland OH 44112 USA;

Lawrence Livermore Lab Livermore CA 94550 USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
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关键词
Pyrochlore; Y2Ti2-xSnxO7 solid solution; Mn4+; R-line energy and intensity;

机译：烧绿石;Y2Ti2-xSnxO7固溶体;Mn4 +;R线能量和强度;

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2. On the Mn~(4+) R-line emission intensity and its tunability in solids [J] . Brik M. G., Beers W. W., Cohen W., Optical Materials . 2019,第MAY期

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Optical spectrum of Mn~(4+) in Y_2Ti_(2-x)Sn_xO_7 pyrochlore solid solution: R-line energy and intensity

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