Development of modified micro-pulling-down method for bromide and chloride single crystals

Yuui Yokota; Noriaki Kawaguchi; Kentaro Fukuda; Takayuki Yanagida; Akira Yoshikawa; Martin Nikl

doi:10.1016/j.jcrysgro.2010.10.183

Development of modified micro-pulling-down method for bromide and chloride single crystals

Yuui Yokota, Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida, Akira Yoshikawa, Martin Nikl

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

21 Citations (Scopus)

Abstract

We developed a modified micro-pulling-down (μ-PD) method for the crystal growth of halide materials with highly hygroscopic nature. A removable chamber system of the modified μ-PD method that can enter a globe box filled with Ar gas enabled to handle starting materials, set up a crucible and hot zone, grow a single crystal from the melt and take out a grown crystal without exposing to outside atmosphere. By the modified μ-PD method, CeCl₃ and Ce 1% doped LaBr₃ single crystals, which were famous as scintillator with high light yield and energy resolution were grown. Grown CeCl₃ and Ce:LaBr₃ single crystals indicated high transparency and they have no visible cracks and inclusions. In photoluminescence measurements, emission peak around 365 nm was observed for CeCl₃ single crystal and Ce:LaBr ₃ single crystal indicated two emission peaks around 360 and 380 nm, which originated from 5d4f transition of Ce³ ion.

Original language	English
Pages (from-to)	908-911
Number of pages	4
Journal	Journal of Crystal Growth
Volume	318
Issue number	1
DOIs	https://doi.org/10.1016/j.jcrysgro.2010.10.183
Publication status	Published - 2011 Mar 1

Keywords

A2. Growth from melt
B1. Halides
B2. Scintillator materials
B3. Scintillators

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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title = "Development of modified micro-pulling-down method for bromide and chloride single crystals",

abstract = "We developed a modified micro-pulling-down (μ-PD) method for the crystal growth of halide materials with highly hygroscopic nature. A removable chamber system of the modified μ-PD method that can enter a globe box filled with Ar gas enabled to handle starting materials, set up a crucible and hot zone, grow a single crystal from the melt and take out a grown crystal without exposing to outside atmosphere. By the modified μ-PD method, CeCl3 and Ce 1% doped LaBr3 single crystals, which were famous as scintillator with high light yield and energy resolution were grown. Grown CeCl3 and Ce:LaBr3 single crystals indicated high transparency and they have no visible cracks and inclusions. In photoluminescence measurements, emission peak around 365 nm was observed for CeCl3 single crystal and Ce:LaBr 3 single crystal indicated two emission peaks around 360 and 380 nm, which originated from 5d4f transition of Ce3 ion.",

keywords = "A2. Growth from melt, B1. Halides, B2. Scintillator materials, B3. Scintillators",

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AU - Yokota, Yuui

AU - Kawaguchi, Noriaki

AU - Fukuda, Kentaro

AU - Yanagida, Takayuki

AU - Yoshikawa, Akira

AU - Nikl, Martin

PY - 2011/3/1

Y1 - 2011/3/1

N2 - We developed a modified micro-pulling-down (μ-PD) method for the crystal growth of halide materials with highly hygroscopic nature. A removable chamber system of the modified μ-PD method that can enter a globe box filled with Ar gas enabled to handle starting materials, set up a crucible and hot zone, grow a single crystal from the melt and take out a grown crystal without exposing to outside atmosphere. By the modified μ-PD method, CeCl3 and Ce 1% doped LaBr3 single crystals, which were famous as scintillator with high light yield and energy resolution were grown. Grown CeCl3 and Ce:LaBr3 single crystals indicated high transparency and they have no visible cracks and inclusions. In photoluminescence measurements, emission peak around 365 nm was observed for CeCl3 single crystal and Ce:LaBr 3 single crystal indicated two emission peaks around 360 and 380 nm, which originated from 5d4f transition of Ce3 ion.

AB - We developed a modified micro-pulling-down (μ-PD) method for the crystal growth of halide materials with highly hygroscopic nature. A removable chamber system of the modified μ-PD method that can enter a globe box filled with Ar gas enabled to handle starting materials, set up a crucible and hot zone, grow a single crystal from the melt and take out a grown crystal without exposing to outside atmosphere. By the modified μ-PD method, CeCl3 and Ce 1% doped LaBr3 single crystals, which were famous as scintillator with high light yield and energy resolution were grown. Grown CeCl3 and Ce:LaBr3 single crystals indicated high transparency and they have no visible cracks and inclusions. In photoluminescence measurements, emission peak around 365 nm was observed for CeCl3 single crystal and Ce:LaBr 3 single crystal indicated two emission peaks around 360 and 380 nm, which originated from 5d4f transition of Ce3 ion.

KW - A2. Growth from melt

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KW - B2. Scintillator materials

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