Insights into dendrite growth and phase transition during Cs2LiLaBr6 crystal growth

Xianggang Zhang; Zhuochen Cai; Kejing Liu; Jinbo Liu; Ziang Yin; Qinghua Zhao; Aizhong Yue; Fa Luo; Tao Wang

doi:10.1016/j.jcrysgro.2023.127136

Insights into dendrite growth and phase transition during Cs₂LiLaBr₆ crystal growth

Xianggang Zhang, Zhuochen Cai, Kejing Liu, Jinbo Liu, Ziang Yin, Qinghua Zhao, Aizhong Yue, Fa Luo, Tao Wang

School of Materials Sience and Engineering

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

1 Scopus citations

Abstract

The lanthanum crystal Cs₂LiLaBr₆ (CLLB) has excellent scintillation properties for gamma/neutron discrimination. The initial melt with hyper-peritectic ratios (55 < LiBr/mol.% < 61) was found beneficial for CLLB crystal growth. The hyper-peritectic melt would pass though the peritectic point. However, the detailed process was still unknown. Herein, the dendrite growth and peritectic reaction were discovered near the peritectic point in CLLB single crystal ingots for the first time. The mechanism of dendrite growth was analyzed. The Cs₂LaBr₅-LiBr phase diagram was modified according to these results. The understanding of phase transition and dendrite evolution can guide crystal growth of CLLB and other similar elpasolite crystals.

Original language	English
Article number	127136
Journal	Journal of Crystal Growth
Volume	609
DOIs	https://doi.org/10.1016/j.jcrysgro.2023.127136
State	Published - 1 May 2023

Keywords

A1. Dendrites
A1. Phase diagrams
A2. Single crystal growth
B1. CLLB crystal
B1. Elpasolites
B2. Scintillator materials

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10.1016/j.jcrysgro.2023.127136

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title = "Insights into dendrite growth and phase transition during Cs2LiLaBr6 crystal growth",

abstract = "The lanthanum crystal Cs2LiLaBr6 (CLLB) has excellent scintillation properties for gamma/neutron discrimination. The initial melt with hyper-peritectic ratios (55 < LiBr/mol.\% < 61) was found beneficial for CLLB crystal growth. The hyper-peritectic melt would pass though the peritectic point. However, the detailed process was still unknown. Herein, the dendrite growth and peritectic reaction were discovered near the peritectic point in CLLB single crystal ingots for the first time. The mechanism of dendrite growth was analyzed. The Cs2LaBr5-LiBr phase diagram was modified according to these results. The understanding of phase transition and dendrite evolution can guide crystal growth of CLLB and other similar elpasolite crystals.",

keywords = "A1. Dendrites, A1. Phase diagrams, A2. Single crystal growth, B1. CLLB crystal, B1. Elpasolites, B2. Scintillator materials",

author = "Xianggang Zhang and Zhuochen Cai and Kejing Liu and Jinbo Liu and Ziang Yin and Qinghua Zhao and Aizhong Yue and Fa Luo and Tao Wang",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = may,

day = "1",

doi = "10.1016/j.jcrysgro.2023.127136",

language = "英语",

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journal = "Journal of Crystal Growth",

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TY - JOUR

T1 - Insights into dendrite growth and phase transition during Cs2LiLaBr6 crystal growth

AU - Zhang, Xianggang

AU - Cai, Zhuochen

AU - Liu, Kejing

AU - Liu, Jinbo

AU - Yin, Ziang

AU - Zhao, Qinghua

AU - Yue, Aizhong

AU - Luo, Fa

AU - Wang, Tao

PY - 2023/5/1

Y1 - 2023/5/1

N2 - The lanthanum crystal Cs2LiLaBr6 (CLLB) has excellent scintillation properties for gamma/neutron discrimination. The initial melt with hyper-peritectic ratios (55 < LiBr/mol.% < 61) was found beneficial for CLLB crystal growth. The hyper-peritectic melt would pass though the peritectic point. However, the detailed process was still unknown. Herein, the dendrite growth and peritectic reaction were discovered near the peritectic point in CLLB single crystal ingots for the first time. The mechanism of dendrite growth was analyzed. The Cs2LaBr5-LiBr phase diagram was modified according to these results. The understanding of phase transition and dendrite evolution can guide crystal growth of CLLB and other similar elpasolite crystals.

AB - The lanthanum crystal Cs2LiLaBr6 (CLLB) has excellent scintillation properties for gamma/neutron discrimination. The initial melt with hyper-peritectic ratios (55 < LiBr/mol.% < 61) was found beneficial for CLLB crystal growth. The hyper-peritectic melt would pass though the peritectic point. However, the detailed process was still unknown. Herein, the dendrite growth and peritectic reaction were discovered near the peritectic point in CLLB single crystal ingots for the first time. The mechanism of dendrite growth was analyzed. The Cs2LaBr5-LiBr phase diagram was modified according to these results. The understanding of phase transition and dendrite evolution can guide crystal growth of CLLB and other similar elpasolite crystals.

KW - A1. Dendrites

KW - A1. Phase diagrams

KW - A2. Single crystal growth

KW - B1. CLLB crystal

KW - B1. Elpasolites

KW - B2. Scintillator materials

UR - http://www.scopus.com/inward/record.url?scp=85149693869&partnerID=8YFLogxK

U2 - 10.1016/j.jcrysgro.2023.127136

DO - 10.1016/j.jcrysgro.2023.127136

M3 - 文章

AN - SCOPUS:85149693869

SN - 0022-0248

VL - 609

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

M1 - 127136

ER -

Insights into dendrite growth and phase transition during Cs₂LiLaBr₆ crystal growth

Abstract

Keywords

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