Effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSrAlF6 crystals

S. Suzuki; Y. Yokota; A. Yamaji; S. Kurosawa; K. Kamada; A. Yoshikawa

doi:10.1016/j.optmat.2014.02.007

Effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSrAlF₆ crystals

S. Suzuki, Y. Yokota, A. Yamaji, S. Kurosawa, K. Kamada, A. Yoshikawa

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

Abstract

Eu doped LiSrAlF₆ (Eu:LiSAF) crystals with various Eu concentrations were grown by a micro-pulling-down (μ-PD) method and the effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSAF crystals were investigated as a neutron scintillator. As-grown Eu0.3%:LiSAF crystal had no visible inclusion while milky parts were observed in the crystals with higher Eu contents. The secondary phases with the chemical composition of EuF₂ or EuF₃ in the Eu:LiSAF matrix were observed for the crystals with high Eu contents while the secondary phase couldn't be observed in the powder XRD patterns. In the radioluminescence spectra of Eu:LiSAF crystals under α-ray irradiation, emission peaks around 375 nm originated from 5d-4f transition of Eu²⁺ ion were observed. The light yields systematically increased with an increase of actual Eu contents in the crystals and the decay times were 1490-1620 ns.

Original language	English
Pages (from-to)	1959-1962
Number of pages	4
Journal	Optical Materials
Volume	36
Issue number	12
DOIs	https://doi.org/10.1016/j.optmat.2014.02.007
Publication status	Published - 2014 Oct

Keywords

LiSrAlF6
Neutron
Single crystal
μ-PD

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Computer Science(all)
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.optmat.2014.02.007

Cite this

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title = "Effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSrAlF6 crystals",

abstract = "Eu doped LiSrAlF6 (Eu:LiSAF) crystals with various Eu concentrations were grown by a micro-pulling-down (μ-PD) method and the effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSAF crystals were investigated as a neutron scintillator. As-grown Eu0.3%:LiSAF crystal had no visible inclusion while milky parts were observed in the crystals with higher Eu contents. The secondary phases with the chemical composition of EuF2 or EuF3 in the Eu:LiSAF matrix were observed for the crystals with high Eu contents while the secondary phase couldn't be observed in the powder XRD patterns. In the radioluminescence spectra of Eu:LiSAF crystals under α-ray irradiation, emission peaks around 375 nm originated from 5d-4f transition of Eu2+ ion were observed. The light yields systematically increased with an increase of actual Eu contents in the crystals and the decay times were 1490-1620 ns.",

keywords = "LiSrAlF6, Neutron, Single crystal, μ-PD",

author = "S. Suzuki and Y. Yokota and A. Yamaji and S. Kurosawa and K. Kamada and A. Yoshikawa",

year = "2014",

month = oct,

doi = "10.1016/j.optmat.2014.02.007",

language = "English",

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pages = "1959--1962",

journal = "Optical Materials",

issn = "0925-3467",

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T1 - Effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSrAlF6 crystals

AU - Suzuki, S.

AU - Yokota, Y.

AU - Yamaji, A.

AU - Kurosawa, S.

AU - Kamada, K.

AU - Yoshikawa, A.

PY - 2014/10

Y1 - 2014/10

N2 - Eu doped LiSrAlF6 (Eu:LiSAF) crystals with various Eu concentrations were grown by a micro-pulling-down (μ-PD) method and the effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSAF crystals were investigated as a neutron scintillator. As-grown Eu0.3%:LiSAF crystal had no visible inclusion while milky parts were observed in the crystals with higher Eu contents. The secondary phases with the chemical composition of EuF2 or EuF3 in the Eu:LiSAF matrix were observed for the crystals with high Eu contents while the secondary phase couldn't be observed in the powder XRD patterns. In the radioluminescence spectra of Eu:LiSAF crystals under α-ray irradiation, emission peaks around 375 nm originated from 5d-4f transition of Eu2+ ion were observed. The light yields systematically increased with an increase of actual Eu contents in the crystals and the decay times were 1490-1620 ns.

AB - Eu doped LiSrAlF6 (Eu:LiSAF) crystals with various Eu concentrations were grown by a micro-pulling-down (μ-PD) method and the effects of Eu concentration control on crystal growth and scintillation properties for Eu:LiSAF crystals were investigated as a neutron scintillator. As-grown Eu0.3%:LiSAF crystal had no visible inclusion while milky parts were observed in the crystals with higher Eu contents. The secondary phases with the chemical composition of EuF2 or EuF3 in the Eu:LiSAF matrix were observed for the crystals with high Eu contents while the secondary phase couldn't be observed in the powder XRD patterns. In the radioluminescence spectra of Eu:LiSAF crystals under α-ray irradiation, emission peaks around 375 nm originated from 5d-4f transition of Eu2+ ion were observed. The light yields systematically increased with an increase of actual Eu contents in the crystals and the decay times were 1490-1620 ns.

KW - LiSrAlF6

KW - Neutron

KW - Single crystal

KW - μ-PD

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