Numerical study of three-dimensional melt flows during the TSSG process of SiC crystal for the influence of input parameters of RF-coils and an external rotating magnetic field

Lei Wang; Yuto Takehara; Atsushi Sekimoto; Yasunori Okano; Toru Ujihara; Sadik Dost

doi:10.3390/cryst10020111

Numerical study of three-dimensional melt flows during the TSSG process of SiC crystal for the influence of input parameters of RF-coils and an external rotating magnetic field

Lei Wang, Yuto Takehara, Atsushi Sekimoto, Yasunori Okano, Toru Ujihara, Sadik Dost

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

2 Citations (Scopus)

Abstract

Three-dimensional numerical simulations were conducted for the Top-Seeded Solution Growth (TSSG) process of silicon carbide (SiC) crystals. We investigated the influence of coils frequency and peak current, and an applied rotating magnetic field (RMF) on the melt flow developing in this system. Numerical simulation results show that the Marangoni flow in the melt becomes stronger at higher coils frequencies due to the decreasing coils-induced electromagnetic field strength. Results also show that the use of external RMF may improve supersaturation uniformity along the seed if it is properly adjusted with respect to the coils-induced electromagnetic field strength. Furthermore, it is predicted that the application of RMF and seed rotation in the same direction may enhance supersaturation below the seed.

Original language	English
Article number	111
Journal	Crystals
Volume	10
Issue number	2
DOIs	https://doi.org/10.3390/cryst10020111
Publication status	Published - Feb 2020
Externally published	Yes

Keywords

Flow control
SiC crystal growth
TSSG method

ASJC Scopus subject areas

Chemical Engineering(all)
Materials Science(all)
Condensed Matter Physics
Inorganic Chemistry

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10.3390/cryst10020111

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title = "Numerical study of three-dimensional melt flows during the TSSG process of SiC crystal for the influence of input parameters of RF-coils and an external rotating magnetic field",

abstract = "Three-dimensional numerical simulations were conducted for the Top-Seeded Solution Growth (TSSG) process of silicon carbide (SiC) crystals. We investigated the influence of coils frequency and peak current, and an applied rotating magnetic field (RMF) on the melt flow developing in this system. Numerical simulation results show that the Marangoni flow in the melt becomes stronger at higher coils frequencies due to the decreasing coils-induced electromagnetic field strength. Results also show that the use of external RMF may improve supersaturation uniformity along the seed if it is properly adjusted with respect to the coils-induced electromagnetic field strength. Furthermore, it is predicted that the application of RMF and seed rotation in the same direction may enhance supersaturation below the seed.",

keywords = "Flow control, SiC crystal growth, TSSG method",

author = "Lei Wang and Yuto Takehara and Atsushi Sekimoto and Yasunori Okano and Toru Ujihara and Sadik Dost",

note = "Funding Information: The research work was financially supported by Grant-in-Aid for Scientific Research (A) (JSPS KAKENHI Grant No. JP18H03839) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. The authors gratefully acknowledge the computational resources provided by the Research Institute for Information Technology at Kyushu University. Funding Information: Funding: The research work was financially supported by Grant-in-Aid for Scientific Research (A) (JSPS KAKENHI Grant No. JP18H03839) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. Publisher Copyright: {\textcopyright} 2020 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2020",

month = feb,

doi = "10.3390/cryst10020111",

language = "English",

volume = "10",

journal = "Crystals",

issn = "2073-4352",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "2",

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TY - JOUR

T1 - Numerical study of three-dimensional melt flows during the TSSG process of SiC crystal for the influence of input parameters of RF-coils and an external rotating magnetic field

AU - Wang, Lei

AU - Takehara, Yuto

AU - Sekimoto, Atsushi

AU - Okano, Yasunori

AU - Ujihara, Toru

AU - Dost, Sadik

N1 - Funding Information: The research work was financially supported by Grant-in-Aid for Scientific Research (A) (JSPS KAKENHI Grant No. JP18H03839) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. The authors gratefully acknowledge the computational resources provided by the Research Institute for Information Technology at Kyushu University. Funding Information: Funding: The research work was financially supported by Grant-in-Aid for Scientific Research (A) (JSPS KAKENHI Grant No. JP18H03839) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. Publisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2020/2

Y1 - 2020/2

N2 - Three-dimensional numerical simulations were conducted for the Top-Seeded Solution Growth (TSSG) process of silicon carbide (SiC) crystals. We investigated the influence of coils frequency and peak current, and an applied rotating magnetic field (RMF) on the melt flow developing in this system. Numerical simulation results show that the Marangoni flow in the melt becomes stronger at higher coils frequencies due to the decreasing coils-induced electromagnetic field strength. Results also show that the use of external RMF may improve supersaturation uniformity along the seed if it is properly adjusted with respect to the coils-induced electromagnetic field strength. Furthermore, it is predicted that the application of RMF and seed rotation in the same direction may enhance supersaturation below the seed.

AB - Three-dimensional numerical simulations were conducted for the Top-Seeded Solution Growth (TSSG) process of silicon carbide (SiC) crystals. We investigated the influence of coils frequency and peak current, and an applied rotating magnetic field (RMF) on the melt flow developing in this system. Numerical simulation results show that the Marangoni flow in the melt becomes stronger at higher coils frequencies due to the decreasing coils-induced electromagnetic field strength. Results also show that the use of external RMF may improve supersaturation uniformity along the seed if it is properly adjusted with respect to the coils-induced electromagnetic field strength. Furthermore, it is predicted that the application of RMF and seed rotation in the same direction may enhance supersaturation below the seed.

KW - Flow control

KW - SiC crystal growth

KW - TSSG method

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Numerical study of three-dimensional melt flows during the TSSG process of SiC crystal for the influence of input parameters of RF-coils and an external rotating magnetic field

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Keywords

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