Novel Method of Search for Transparent Optical Materials with Extremely High Melting Point

Yutaro Kurashima, Shunsuke Kurosawa, Rikito Murakami, Akihiro Yamaji, Shiori Ishikawa, Jan Pejchal, Kei Kamada, Masao Yoshino, Satoshi Toyoda, Hiroki Sato, Yuui Yokota, Yuji Ohashi, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review


We propose a novel crystal growth method, "Core Heating (CH) Method", which is suitable for a search of novel materials with extremely high melting points above the melting (softening) point of an Ir crucible. As a feasibility test of the novel CH method, we fabricated the conventional material, (Y0.99Ce0.01)3Al5O12 (Ce:YAG), with a melting point of ∼1970 °C, because this material can be grown by the conventional melt growth technique like the micropulling down (μ-PD) method for the comparison. We compared scintillation properties for Ce:YAG prepared by the CH and μ-PD methods in order to find if the CH method can be applied to the material search. The crystals grown by both methods showed the YAG single-phase, and almost all their optical and scintillation properties of them were comparable for both samples. Particularly, the light output of Ce:YAG crystal grown by the CH method (20,000 ± 1,000 photons/MeV) was similar to that of the sample grown by the μ-PD method (23,000 ± 1,000 photons/MeV). Therefore, we concluded that the CH method is a useful technique for the search of scintillation materials with extremely high melting points.

Original languageEnglish
Pages (from-to)572-578
Number of pages7
JournalCrystal Growth and Design
Issue number1
Publication statusPublished - 2021 Jan 6

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


Dive into the research topics of 'Novel Method of Search for Transparent Optical Materials with Extremely High Melting Point'. Together they form a unique fingerprint.

Cite this