Optical spectrum of Mn4+ in Y2Ti2-xSnxO7 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.

doi:10.1016/j.optmat.2019.109196

Title: Optical spectrum of Mn⁴⁺ in Y₂Ti_2-xSn_xO₇ pyrochlore solid solution: R-line energy and intensity

Abstract

We report we investigated the luminescence of the Mn⁴⁺ ions in Y₂Ti_2-xSn_xO₇ (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 Y₂Ti_2-x Sn_xO₇ (²E_g (cm^–1) = 15 010 + 163.0 x; R² = 0.98).

Authors:

Srivastava, A. M. ^[1]; Brik, M. G. ^[2]; Comanzo, H. A. ^[1]; Beers, W. W. ^[3]; Cohen, W. ^[3]; Cherepy, N. J. ^[4]; Payne, S. A. ^[4]

GE Global Research, Niskayuna, NY (United States)
Chongqing Univ. of Posts and Telecommunications (China); Univ. of Tartu (Estonia); Jan Długosz Univ., Częstochowa (Poland)
Current Powered by GE, Cleveland, OH (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Publication Date:: Sat Jun 22 00:00:00 EDT 2019

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; National Recruitment Program of High-end Foreign Experts; Programme for the Foreign Experts; Chongqing University of Posts and Telecommunications; Estonian Research Council; European Regional Development Fund (ERDF)

OSTI Identifier:: 1635083

Alternate Identifier(s):: OSTI ID: 1529014

Report Number(s):: LLNL-JRNL-808459
Journal ID: ISSN 0925-3467; 1010139

Grant/Contract Number:: AC52-07NA27344; AC02-07CH11358; GDT20185200479; GDW20145200225; W2017011; W2016-01; PUT PRG111

Resource Type:: Accepted Manuscript

Journal Name:: Optical Materials

Additional Journal Information:: Journal Volume: 95; Journal Issue: na; Journal ID: ISSN 0925-3467

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Pyrochlore; Y2Ti2-xSnxO7 Solid Solution; Mn4+; R-line Energy and Intensity

Citation Formats


                    Srivastava, A. M., Brik, M. G., Comanzo, H. A., Beers, W. W., Cohen, W., Cherepy, N. J., and Payne, S. A. Optical spectrum of Mn4+ in Y2Ti2-xSnxO7 pyrochlore solid solution: R-line energy and intensity.  United States: N. p., 2019. 
Web.  doi:10.1016/j.optmat.2019.109196.

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                    Srivastava, A. M., Brik, M. G., Comanzo, H. A., Beers, W. W., Cohen, W., Cherepy, N. J., & Payne, S. A. Optical spectrum of Mn4+ in Y2Ti2-xSnxO7 pyrochlore solid solution: R-line energy and intensity.  United States.  https://doi.org/10.1016/j.optmat.2019.109196

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                    Srivastava, A. M., Brik, M. G., Comanzo, H. A., Beers, W. W., Cohen, W., Cherepy, N. J., and Payne, S. A. Sat .  
"Optical spectrum of Mn4+ in Y2Ti2-xSnxO7 pyrochlore solid solution: R-line energy and intensity".  United States.  https://doi.org/10.1016/j.optmat.2019.109196.  https://www.osti.gov/servlets/purl/1635083.

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@article{osti_1635083,

  title        = {Optical spectrum of Mn4+ in Y2Ti2-xSnxO7 pyrochlore solid solution: R-line energy and intensity},

  author       = {Srivastava, A. M. and Brik, M. G. and Comanzo, H. A. and Beers, W. W. and Cohen, W. and Cherepy, N. J. and Payne, S. A.},

  abstractNote = {We report 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-x SnxO7 (2Eg (cm–1) = 15 010 + 163.0 x; R2 = 0.98).},

  doi          = {10.1016/j.optmat.2019.109196},

  journal      = {Optical Materials},

  number       = na,

  volume       = 95,

  place        = {United States},

  year         = {Sat Jun 22 00:00:00 EDT 2019},

  month        = {Sat Jun 22 00:00:00 EDT 2019}

}

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Cited by: 7 works

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Figure 1: The emission spectra of Mn₄₊ in pyrochlores, Y₂Ti₂O₇, Y₂Ti_1.5Sn_0.5O₇, Y₂TiSnO₇ and Y₂Sn₂O₇ [T= 15 K]. The R-line (ZPL) is indicated in the figure. The excitation wavelength was λ_ex= 360 nm. Note the line broadening and the high ZPL intensity in the pyrochlore solid solution.

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Title: Optical spectrum of Mn4+ in Y2Ti2-xSnxO7 pyrochlore solid solution: R-line energy and intensity

Abstract

Citation Formats

Figures / Tables:

Title: Optical spectrum of Mn⁴⁺ in Y₂Ti_2-xSn_xO₇ pyrochlore solid solution: R-line energy and intensity