Luminescence properties of rare earth ions in polytantalate

Shun Ichi Kubota; Hiasanori Yamane; Masahiko Shimada; Hirotsugu Takizawa; Tadashi Endo

doi:10.1016/S0925-8388(98)00426-5

Luminescence properties of rare earth ions in polytantalate

Shun Ichi Kubota, Hiasanori Yamane, Masahiko Shimada, Hirotsugu Takizawa, Tadashi Endo

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

The luminescence properties of R³⁺ (R³⁺=Eu³⁺, Tb³⁺, Tm³⁺) in La_1-xR_xTa₇O₁₉ solid solution were systematically examined. In this host lattice, the distance between nearest neighbors of the La³⁺ site which were substituted by the R³⁺ ions, were very long (about 0.62 nm) and the sites locate two-dimensionally. The critical concentration at which the concentration quenching occurred under UV excitation were x=1.0 in La_1-xEu_xTa₇O₁₉, x=0.9 in La_1-xTb_xTa₇O₁₉ and x=0.14 in La_1-xTm_xTa₇O₁₉. Furthermore the energy migration process of these samples were investigated.

Original language	English
Pages (from-to)	746-749
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	275-277
DOIs	https://doi.org/10.1016/S0925-8388(98)00426-5
Publication status	Published - 1998 Jul 24

Keywords

Energy migration
Luminescence
Rare earth
Tantalate

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Kubota, S. I., Yamane, H., Shimada, M., Takizawa, H., & Endo, T. (1998). Luminescence properties of rare earth ions in polytantalate. Journal of Alloys and Compounds, 275-277, 746-749. https://doi.org/10.1016/S0925-8388(98)00426-5

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title = "Luminescence properties of rare earth ions in polytantalate",

abstract = "The luminescence properties of R3+ (R3+=Eu3+, Tb3+, Tm3+) in La1-xRxTa7O19 solid solution were systematically examined. In this host lattice, the distance between nearest neighbors of the La3+ site which were substituted by the R3+ ions, were very long (about 0.62 nm) and the sites locate two-dimensionally. The critical concentration at which the concentration quenching occurred under UV excitation were x=1.0 in La1-xEuxTa7O19, x=0.9 in La1-xTbxTa7O19 and x=0.14 in La1-xTmxTa7O19. Furthermore the energy migration process of these samples were investigated.",

keywords = "Energy migration, Luminescence, Rare earth, Tantalate",

author = "Kubota, {Shun Ichi} and Hiasanori Yamane and Masahiko Shimada and Hirotsugu Takizawa and Tadashi Endo",

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AU - Kubota, Shun Ichi

AU - Yamane, Hiasanori

AU - Shimada, Masahiko

AU - Takizawa, Hirotsugu

AU - Endo, Tadashi

PY - 1998/7/24

Y1 - 1998/7/24

N2 - The luminescence properties of R3+ (R3+=Eu3+, Tb3+, Tm3+) in La1-xRxTa7O19 solid solution were systematically examined. In this host lattice, the distance between nearest neighbors of the La3+ site which were substituted by the R3+ ions, were very long (about 0.62 nm) and the sites locate two-dimensionally. The critical concentration at which the concentration quenching occurred under UV excitation were x=1.0 in La1-xEuxTa7O19, x=0.9 in La1-xTbxTa7O19 and x=0.14 in La1-xTmxTa7O19. Furthermore the energy migration process of these samples were investigated.

AB - The luminescence properties of R3+ (R3+=Eu3+, Tb3+, Tm3+) in La1-xRxTa7O19 solid solution were systematically examined. In this host lattice, the distance between nearest neighbors of the La3+ site which were substituted by the R3+ ions, were very long (about 0.62 nm) and the sites locate two-dimensionally. The critical concentration at which the concentration quenching occurred under UV excitation were x=1.0 in La1-xEuxTa7O19, x=0.9 in La1-xTbxTa7O19 and x=0.14 in La1-xTmxTa7O19. Furthermore the energy migration process of these samples were investigated.

KW - Energy migration

KW - Luminescence

KW - Rare earth

KW - Tantalate

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