ON the interconfigurational 4fn↔4fn-15d1 optical transitions of Ce3+ and Pr3+ in Ca9R3+ (PO4)7 [R3+=Al, Ga, Sc, Lu, Y, Gd, La]

S. J. Camardello; P. J. Toscano; A. M. Srivastava

doi:10.1016/j.jlumin.2016.04.004

ON the interconfigurational 4fⁿ↔4f^n-15d¹ optical transitions of Ce³⁺ and Pr³⁺ in Ca₉R³⁺ (PO₄)₇ [R³⁺=Al, Ga, Sc, Lu, Y, Gd, La]

S. J. Camardello
, P. J. Toscano
, A. M. Srivastava

Chemistry

University at Albany

General Electric

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A systematic study of the optical properties of Ce³⁺ and Pr³⁺ in Ca₉R³⁺ (PO₄)₇ [R³⁺=Al, Sc, Lu, Y, Gd, La] is presented. The materials crystallize in the Whitlockite structure of β-Ca₃(PO₄)₂. From the room temperature excitation spectra, the crystal-field splitting and centroid shift of the Ce³⁺ 5d¹ configuration is estimated. The optical properties (crystal-field splitting, the centroid shift and Stokes shift of emission) of Ce³⁺ is independent of the R³⁺ cation in Ca₉R³⁺ (PO₄)₇. It is concluded that in this family of materials and in the parent β-Ca₃(PO₄)₂ lattice, the Ce³⁺ and Pr³⁺ preferentially occupy the eight coordinated 18(b) Ca(3) site of the R3c space group. Relative to other phosphates, the covalence of the Ce³⁺-O^2- bonding is high in this family of orthophosphate materials.

Original language	English
Pages (from-to)	363-366
Number of pages	4
Journal	Journal of Luminescence
Volume	176
DOIs	https://doi.org/10.1016/j.jlumin.2016.04.004
State	Published - Aug 2016

Keywords

CaR (PO)
Ce
Interconfigurational transitions
Pr

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10.1016/j.jlumin.2016.04.004

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@article{03b99196b37c4748bea6d7b772a742b0,

title = "ON the interconfigurational 4fn↔4fn-15d1 optical transitions of Ce3+ and Pr3+ in Ca9R3+ (PO4)7 [R3+=Al, Ga, Sc, Lu, Y, Gd, La]",

abstract = "A systematic study of the optical properties of Ce3+ and Pr3+ in Ca9R3+ (PO4)7 [R3+=Al, Sc, Lu, Y, Gd, La] is presented. The materials crystallize in the Whitlockite structure of β-Ca3(PO4)2. From the room temperature excitation spectra, the crystal-field splitting and centroid shift of the Ce3+ 5d1 configuration is estimated. The optical properties (crystal-field splitting, the centroid shift and Stokes shift of emission) of Ce3+ is independent of the R3+ cation in Ca9R3+ (PO4)7. It is concluded that in this family of materials and in the parent β-Ca3(PO4)2 lattice, the Ce3+ and Pr3+ preferentially occupy the eight coordinated 18(b) Ca(3) site of the R3c space group. Relative to other phosphates, the covalence of the Ce3+-O2- bonding is high in this family of orthophosphate materials.",

keywords = "CaR (PO), Ce, Interconfigurational transitions, Pr",

author = "Camardello, \{S. J.\} and Toscano, \{P. J.\} and Srivastava, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} 2016 Published by Elsevier B.V.",

year = "2016",

month = aug,

doi = "10.1016/j.jlumin.2016.04.004",

language = "English",

volume = "176",

pages = "363--366",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - ON the interconfigurational 4fn↔4fn-15d1 optical transitions of Ce3+ and Pr3+ in Ca9R3+ (PO4)7 [R3+=Al, Ga, Sc, Lu, Y, Gd, La]

AU - Camardello, S. J.

AU - Toscano, P. J.

AU - Srivastava, A. M.

PY - 2016/8

Y1 - 2016/8

N2 - A systematic study of the optical properties of Ce3+ and Pr3+ in Ca9R3+ (PO4)7 [R3+=Al, Sc, Lu, Y, Gd, La] is presented. The materials crystallize in the Whitlockite structure of β-Ca3(PO4)2. From the room temperature excitation spectra, the crystal-field splitting and centroid shift of the Ce3+ 5d1 configuration is estimated. The optical properties (crystal-field splitting, the centroid shift and Stokes shift of emission) of Ce3+ is independent of the R3+ cation in Ca9R3+ (PO4)7. It is concluded that in this family of materials and in the parent β-Ca3(PO4)2 lattice, the Ce3+ and Pr3+ preferentially occupy the eight coordinated 18(b) Ca(3) site of the R3c space group. Relative to other phosphates, the covalence of the Ce3+-O2- bonding is high in this family of orthophosphate materials.

AB - A systematic study of the optical properties of Ce3+ and Pr3+ in Ca9R3+ (PO4)7 [R3+=Al, Sc, Lu, Y, Gd, La] is presented. The materials crystallize in the Whitlockite structure of β-Ca3(PO4)2. From the room temperature excitation spectra, the crystal-field splitting and centroid shift of the Ce3+ 5d1 configuration is estimated. The optical properties (crystal-field splitting, the centroid shift and Stokes shift of emission) of Ce3+ is independent of the R3+ cation in Ca9R3+ (PO4)7. It is concluded that in this family of materials and in the parent β-Ca3(PO4)2 lattice, the Ce3+ and Pr3+ preferentially occupy the eight coordinated 18(b) Ca(3) site of the R3c space group. Relative to other phosphates, the covalence of the Ce3+-O2- bonding is high in this family of orthophosphate materials.

KW - CaR (PO)

KW - Ce

KW - Interconfigurational transitions

KW - Pr

UR - https://www.scopus.com/pages/publications/84964385418

U2 - 10.1016/j.jlumin.2016.04.004

DO - 10.1016/j.jlumin.2016.04.004

M3 - Article

SN - 0022-2313

VL - 176

SP - 363

EP - 366

JO - Journal of Luminescence

JF - Journal of Luminescence

ER -

ON the interconfigurational 4fⁿ↔4f^n-15d¹ optical transitions of Ce³⁺ and Pr³⁺ in Ca₉R³⁺ (PO₄)₇ [R³⁺=Al, Ga, Sc, Lu, Y, Gd, La]

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