Phase diagram of BaI2-LuI3 system and growth of BaI2/LuI3 eutectic scintillator

Kazuya Origuchi; Yuui Yokota; Robert Kral; Masao Yoshino; Akihiro Yamaji; Satoshi Toyoda; Hiroki Sato; Yuji Ohashi; Shunsuke Kurosawa; Kei Kamada; Akira Yoshikawa

doi:10.1016/j.jcrysgro.2020.125573

Phase diagram of BaI₂-LuI₃ system and growth of BaI₂/LuI₃ eutectic scintillator

Kazuya Origuchi, Yuui Yokota, Robert Kral, Masao Yoshino, Akihiro Yamaji, Satoshi Toyoda, Hiroki Sato, Yuji Ohashi, Shunsuke Kurosawa, Kei Kamada, Akira Yoshikawa

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3 Citations (Scopus)

Abstract

The phase diagram of the BaI₂-LuI₃ system was created using powder X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analysis, and a eutectic scintillator crystal was grown by the halide-vertical bridgman (H-VB) method. The results of XRD patterns and DSC curves showed that the phase diagram of the BaI₂-LuI₃ system had a eutectic point around 77.5 mol% BaI₂/22.5 mol% LuI₃, and no new compound was generated from BaI₂ and LuI₃. The 77.5 mol% BaI₂/22.5 mol% LuI₃ eutectic crystal was composed of BaI₂ in rod phase and LuI₃ in matrix phase. In addition, the Ce-doped 77.5 mol% BaI₂/22.5 mol% LuI₃ specimen showed emission peaks originating from 5d–4f transition of Ce³⁺ ion in the X-ray radioluminescence (XRL) spectrum and the decay time under γ-ray irradiation was approximately 38 ns.

Original language	English
Article number	125573
Journal	Journal of Crystal Growth
Volume	536
DOIs	https://doi.org/10.1016/j.jcrysgro.2020.125573
Publication status	Published - 2020 Apr 15

Keywords

A1. Eutectics
A1. Phase diagrams
B3. Scintillators

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10.1016/j.jcrysgro.2020.125573

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title = "Phase diagram of BaI2-LuI3 system and growth of BaI2/LuI3 eutectic scintillator",

abstract = "The phase diagram of the BaI2-LuI3 system was created using powder X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analysis, and a eutectic scintillator crystal was grown by the halide-vertical bridgman (H-VB) method. The results of XRD patterns and DSC curves showed that the phase diagram of the BaI2-LuI3 system had a eutectic point around 77.5 mol% BaI2/22.5 mol% LuI3, and no new compound was generated from BaI2 and LuI3. The 77.5 mol% BaI2/22.5 mol% LuI3 eutectic crystal was composed of BaI2 in rod phase and LuI3 in matrix phase. In addition, the Ce-doped 77.5 mol% BaI2/22.5 mol% LuI3 specimen showed emission peaks originating from 5d–4f transition of Ce3+ ion in the X-ray radioluminescence (XRL) spectrum and the decay time under γ-ray irradiation was approximately 38 ns.",

keywords = "A1. Eutectics, A1. Phase diagrams, B3. Scintillators",

author = "Kazuya Origuchi and Yuui Yokota and Robert Kral and Masao Yoshino and Akihiro Yamaji and Satoshi Toyoda and Hiroki Sato and Yuji Ohashi and Shunsuke Kurosawa and Kei Kamada and Akira Yoshikawa",

note = "Funding Information: This work was partially supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan Society for the Promotion of Science (JSAP), Grant-in-Aid for Young Scientists (A), 15H05551 . The work was also supported by the Toyota Physical and Chemical Research Institute , Toyota Riken Scholar. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = apr,

day = "15",

doi = "10.1016/j.jcrysgro.2020.125573",

language = "English",

volume = "536",

journal = "Journal of Crystal Growth",

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TY - JOUR

T1 - Phase diagram of BaI2-LuI3 system and growth of BaI2/LuI3 eutectic scintillator

AU - Origuchi, Kazuya

AU - Yokota, Yuui

AU - Kral, Robert

AU - Yoshino, Masao

AU - Yamaji, Akihiro

AU - Toyoda, Satoshi

AU - Sato, Hiroki

AU - Ohashi, Yuji

AU - Kurosawa, Shunsuke

AU - Kamada, Kei

AU - Yoshikawa, Akira

N1 - Funding Information: This work was partially supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan Society for the Promotion of Science (JSAP), Grant-in-Aid for Young Scientists (A), 15H05551 . The work was also supported by the Toyota Physical and Chemical Research Institute , Toyota Riken Scholar. Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/4/15

Y1 - 2020/4/15

N2 - The phase diagram of the BaI2-LuI3 system was created using powder X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analysis, and a eutectic scintillator crystal was grown by the halide-vertical bridgman (H-VB) method. The results of XRD patterns and DSC curves showed that the phase diagram of the BaI2-LuI3 system had a eutectic point around 77.5 mol% BaI2/22.5 mol% LuI3, and no new compound was generated from BaI2 and LuI3. The 77.5 mol% BaI2/22.5 mol% LuI3 eutectic crystal was composed of BaI2 in rod phase and LuI3 in matrix phase. In addition, the Ce-doped 77.5 mol% BaI2/22.5 mol% LuI3 specimen showed emission peaks originating from 5d–4f transition of Ce3+ ion in the X-ray radioluminescence (XRL) spectrum and the decay time under γ-ray irradiation was approximately 38 ns.

AB - The phase diagram of the BaI2-LuI3 system was created using powder X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analysis, and a eutectic scintillator crystal was grown by the halide-vertical bridgman (H-VB) method. The results of XRD patterns and DSC curves showed that the phase diagram of the BaI2-LuI3 system had a eutectic point around 77.5 mol% BaI2/22.5 mol% LuI3, and no new compound was generated from BaI2 and LuI3. The 77.5 mol% BaI2/22.5 mol% LuI3 eutectic crystal was composed of BaI2 in rod phase and LuI3 in matrix phase. In addition, the Ce-doped 77.5 mol% BaI2/22.5 mol% LuI3 specimen showed emission peaks originating from 5d–4f transition of Ce3+ ion in the X-ray radioluminescence (XRL) spectrum and the decay time under γ-ray irradiation was approximately 38 ns.

KW - A1. Eutectics

KW - A1. Phase diagrams

KW - B3. Scintillators

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VL - 536

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

M1 - 125573

ER -

Phase diagram of BaI₂-LuI₃ system and growth of BaI₂/LuI₃ eutectic scintillator

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