Melting and Crystal Growth in Induction Furnaces

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Crystallography and Applications of Metallic Materials".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 3291

Special Issue Editor


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Guest Editor
Instytut Fizyki, Uniwersytet Kazimierza Wielkiego w Bydgoszczy, 85-064 Bydgoszcz, Poland
Interests: crystal growth; scintillation; photoconversion; garnets; solid-state reactions; energy transfer; emission and excitation spectra; thermoluminescence; decay kinetics; luminescence quenching mechanisms; thermodynamical phase stability; defect engineering; atoms segregations

Special Issue Information

Dear Colleagues,

Functional crystals are high-tech solid materials that possess a high degree of purity and perfection, and are engineered for the desired application. Mainly, such applications can include functional properties that transform one form of energy into another e.g., acoustic, light, heat, electrical, magnetic, mechanical, etc. The rapid progress in modern science and technology demands more varieties of functional crystals. Consequently, many piezoelectric, scintillator, semiconductor, laser optical, and nonlinear optical single crystals have been grown.

Continuous development in synthetic chemistry contributes to the development or improvement of new of already-existing melt growth technologies. A functional crystal plays an important role in different fields, especially when it is used as a key material in advanced technology and industry. The demand for large bulk and high-quality single crystals significantly imposes the rapid development of crystal growth methods. The current trend in the development of functional crystals is focused on the production of low-dimensional crystals precisely tailored to be a part of multifunctional devices, including scintillation detectors, photo-converters, solid-state lasers, semiconductors, etc. Those tailored crystals possess better physical and chemical properties, such as a higher damage threshold, a shorter pulse width, a higher quantum efficiency, a higher frequency, and operation under extreme conditions.   

Melt growth of crystals is undoubtedly the most popular method of growing large single crystals at relatively high growth rates. Mostly, functional crystals are characterized by a high melting point. Hence, functional crystals are mostly grown using the induction heating method. Over half of industrial crystals are produced using this technology. Mostly, oxides, halides, chalcogenides, elemental semiconductors, and metals, etc., are obtained in the induction furnaces.

Dr. Karol Bartosiewicz
Guest Editor

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Keywords

  • single crystal
  • melt growth
  • induction furnace
  • oxides
  • halides
  • scintillator
  • piezoelectric
  • laser
  • photoconvertor
  • defects

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Published Papers (1 paper)

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Research

10 pages, 3749 KiB  
Article
Floating Particles in the Melt during the Growth of β-Ga2O3 Single Crystals Using the Czochralski Method
by Yingying Liu, Xiangwei Guo, Ning Xia, Zijian Hong, Hui Zhang and Deren Yang
Metals 2022, 12(7), 1171; https://doi.org/10.3390/met12071171 - 9 Jul 2022
Cited by 7 | Viewed by 2435
Abstract
Floating particles often appear during the Czochralski (CZ) growth of β-Ga2O3 in the Ir crucible, thereby impeding the seeding process. Identifying the floating nanoparticles and then inhibiting or removing them is critical for growing high-quality β-Ga2O [...] Read more.
Floating particles often appear during the Czochralski (CZ) growth of β-Ga2O3 in the Ir crucible, thereby impeding the seeding process. Identifying the floating nanoparticles and then inhibiting or removing them is critical for growing high-quality β-Ga2O3 single crystals. We grew β-Ga2O3 crystals containing floating particles using the CZ method. It is indicated that the floating particles were composed of Ir with a face-centered cubic (fcc) structure. In addition, the β-Ga2O3/Ir interface was comprehensively characterized, showing sharp and straight configuration on the whole with small fluctuations at the nanoscale. Combined with density functional theory (DFT) calculation, we found that Ir-O bonding was responsible for stabilizing the interface. Accordingly, the atomic configuration of the interface with the stablest structure, including the relaxed one, was determined. Based on the formation mechanism of the floating particles, we propose three effective strategies, including blowing sufficient oxygen into the bottom of the Ir crucible, coating a protective layer on its inwall and equipping a mechanical arm for inhibiting or removing them. Full article
(This article belongs to the Special Issue Melting and Crystal Growth in Induction Furnaces)
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