Article
Chemistry, Physical
Xiuwei Fu, Encarnacion G. Villora, Yoshitaka Matsushita, Yuuki Kitanaka, Yuji Noguchi, Masaru Miyayama, Kiyoshi Shimamura, Naoki Ohashi
Summary: The partial substitution of Ca by Sr in langasite single crystal Ca3TaAl3Si2O14 was investigated for crystal growth improvement, resulting in a highly transparent and faceted (SrxCa1-x)(3)TaAl3Si2O14 single crystal with enhanced piezoelectric properties for high temperature applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Crystallography
Naoko Kutsuzawa, Yui Takizawa, Kei Kamada, Masao Yoshino, Kyoung Jin Kim, Rikito Murakami, Yasuhiro Shoji, Vladimir V. Kochurikhin, Akira Yoshikawa
Summary: A novel (LiCl)-Li-6/(Li2SrCl4)-Li-6 eutectic scintillator with high Li concentration was developed, with Eu2+ serving as an activator for the (Li2SrCl4)-Li-6 phase. The scintillator exhibited a lamellar-type eutectic structure, optical transparency, and 400 nm emission due to Eu2+ 5d-4f transition, showing potential as a thermal neutron scintillator.
JOURNAL OF CRYSTAL GROWTH
(2021)
Article
Materials Science, Multidisciplinary
Tosawat Seetawan, Athron Vora-Ud, Fawad Ullah, Phan Bach Thang, Manish Kumar, Hong Joo Kim
Summary: A single crystal of Lead Telluride (PbTe) has been successfully grown using the Czochralski technique, with its microstructure and composition confirmed. The transport of charges in PbTe is influenced by temperature, leading to different types of conductivity at different temperature ranges. In terms of thermoelectric properties, p-type exhibits better performance than n-type, with higher thermoelectric power factor (PF) values and dimensionless figure of merit (ZT) values.
Article
Crystallography
Yui Takizawa, Kei Kamada, Naoko Kutsuzawa, Kyoung Jin Kim, Masao Yoshino, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Vladimir V. Kochurikhin, Akira Yoshikawa
Summary: In this study, Tl:CsI/KI/KCl eutectic scintillators were successfully grown with good optical properties and luminescence performance. The decay time of the eutectic was measured at 313 ns, with an estimated light output of 22,000 photons/MeV.
JOURNAL OF CRYSTAL GROWTH
(2021)
Article
Optics
Ruifeng Tian, Mingyan Pan, Lu Zhang, Hongji Qi
Summary: Four single crystals with different compositions were successfully grown using the Czochralski method. The correlation between the host atom ratio and the density and luminescence properties was investigated. The density increased linearly with the increase in Lu3+ content, leading to improved gamma ray cut-off ability. The integrated intensity of the X-ray excited luminescence spectrum exponentially increased with the increasing Y:Lu ratio, while the decay time became shorter with the increasing Lu3+ content. These findings provide a basis for balancing comprehensive properties to meet different application requirements.
CHINESE OPTICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Naoki Kawano, Atsushi Horimoto, Hiromi Kimura, Daisuke Nakauchi, Masaki Akatsuka, Takayuki Yanagida
Summary: Crystals of organic-inorganic layered perovskite-type compounds containing chlorophenethylamine were fabricated using a temperature gradient method, showing clear exciton emissions and broad emission peaks possibly due to bound excitons trapped at unknown defects. The scintillation light yields under 241Am gamma-ray irradiation were different for the different compounds, with low afterglow levels comparable to Ce-doped Gd2SiO5 observed in perovskite-compounds with chlorophenethylamine.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Crystallography
Kei Kamada, Rei Sasaki, Taketoshi Tomida, Isao Takahashi, Masao Yoshino, Takahiko Horiai, Rikito Murakami, Vladimir Kochurikhin, Yasuhiro Shoji, Koichi Kakimoto, Akira Yoshikawa
Summary: In this study, 45 cm diameter & beta;-Ga2O3 single crystals were prepared using the cold crucible (OCCC) method under various oxygen partial pressures. The optical properties and radiation responses of the crystals grown under different oxygen partial pressures were evaluated.
Review
Chemistry, Multidisciplinary
HongJoo Kim, Arshad Khan, Joseph Daniel, Gul Rooh, Phan Quoc Vuong
Summary: This study highlights the current development status and future perspectives of Tl-based inorganic scintillators, which exhibit highly efficient luminescence and increased density and effective atomic number. These scintillators have wide applications in medical imaging, homeland security, space research, etc., and there is potential for further improvements in the future.
Article
Chemistry, Physical
Marcello Campajola, Francesco Di Capua, Pierluigi Casolaro, Ettore Sarnelli, Alberto Aloisio
Summary: This paper investigates the scintillation features and radiation damage of polyethylene naphthalate scintillators irradiated with proton and electron beams. The results show that the irradiation leads to a loss of transparency and a reduction in light yield.
Article
Materials Science, Ceramics
Jan Havlicek, Katerina Rubesova, Vit Jakes, Romana Kucerkova, Alena Beitlerova, Martin Nikl
Summary: This study explores the potential of cerium- or europium-doped LiSrBO3 and LiSr4(BO3)(3) as thermal neutron scintillator materials, which exhibit advantages such as high lithium and boron content, suitable density, and proper environment for luminescent ions. Radioluminescence of these ceramic borates doped with cerium and europium was investigated, showing promising results, especially in response to X-ray excitation.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Frantisek Zajic, Martin Klejch, Adam Elias, Milan Klicpera, Alena Beitlerova, Martin Nikl, Jiri Pospisil
Summary: We present the growth of Nd:YAG laser material single crystal using a crucible-free floating zone method in an advanced laser optical furnace. Optimized parameters were used to produce high-quality single crystals of typical laser rod size. A unique afterheater was developed to reduce strain and improve machinability, which is not available in common mirror furnaces. The high quality of the single crystals was confirmed through Laue diffraction, and the internal strain was analyzed with neutron diffraction. The absorption spectrum matches the parameters of commercially produced Czochralski method material. The presented methodology is suitable for growing high-quality single crystals of oxide-based materials, especially in an oxidizing environment not attainable with common crucible methods.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Instruments & Instrumentation
Wasin Chevajarassakul, Phannee Saengkaew, Kulthawat Cheewajaroen, Decho Thong-Aram, Kittidhaj Dhanasiwawong, Visittapong Yordsri, Prapon Lertloypanyachai, Akapong Phunpueok, Jakrapong Kaewkhao, Nuchjaree Kiwsakunkan, Nakarin Singkiburin
Summary: This study aims to investigate the impact of strontium composition on thallium-doped cesium iodide scintillators. The results show that slightly increasing the strontium composition can improve the crystal structure and optical properties of the scintillators, making them promising materials for alternative high-performance radiation detectors.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Chemistry, Applied
Kunfeng Chen, Dongfeng Xue
Summary: This study successfully achieved fast growth of Ce:LYSO crystals via the Czochralski method, obtaining large-size single crystals with a diameter of 64 mm, a length of 220 mm, and a mass of 4.2 kg. The luminescence performance of Ce:LYSO for nuclear irradiation detector devices was investigated, with a light yield of 26193 ph/MeV and a decay time of 38 ns obtained. The research provides a promising approach for fast growth of large functional bulk crystals through thermodynamic and kinetic controls.
JOURNAL OF RARE EARTHS
(2021)
Article
Nanoscience & Nanotechnology
Shorooq A. Alomar, Jian-Xin Wang, Luis Gutierrez-Arzaluz, Simil Thomas, Husam N. Alshareef, Osman M. Bakr, Mohamed Eddaoudi, Omar F. Mohammed
Summary: X-ray imaging scintillators are crucial in medical examinations and safety inspections. High-performance scintillators made from ceramic materials are costly and require harsh preparation conditions. Organic scintillators, on the other hand, offer a low-cost and easily fabricated alternative. However, the low exciton utilization efficiency of organic scintillators hampers their commercialization. This study explores the use of thermally activated delayed fluorescence (TADF) chromophores to enhance the absorption of ionizing radiation in X-ray imaging screens, resulting in outstanding resolution.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
M. Chatelain, M. Albaric, D. Pelletier, J. Veirman, E. Letty
Summary: This study improved a numerical method combining thermo-hydraulic simulations and a kinetic thermal donor (TD) formation model. By investigating different Cz growth processes, a more appropriate TD formation model was identified and its reliability was validated, providing insights for process optimization and furnace design to reduce TD concentrations.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Instruments & Instrumentation
Yuntao Wu, Qi Li, Daniel J. Rutstrom, Ian Greeley, Luis Stan, Matthew Loyd, Merry Koschan, Charles L. Melcher
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2020)
Article
Instruments & Instrumentation
Matthew Loyd, Adam Lindsey, Yuntao Wu, Luis Stand, Micah Folsom, Daniel Rutstrom, Merry Koschan, Charles L. Melcher, Mariya Zhuravleva
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2019)
Article
Materials Science, Multidisciplinary
Yuntao Wu, Mengkun Tian, Jing Peng, Merry Koschan, Ian Greeley, Camera Foster, Charles L. Melcher
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2019)
Article
Nanoscience & Nanotechnology
Yuntao Wu, Jing Peng, Daniel Rutstrom, Merry Koschan, Camera Foster, Charles L. Melcher
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Applied
Longfei Zhang, Shaoyi Lyu, Qijun Zhang, Yuntao Wu, Chuck Melcher, Stephen C. Chmely, Zhilin Chen, Siqun Wang
CARBOHYDRATE POLYMERS
(2019)
Article
Optics
L. Stand, M. Zhuravleva, B. Chakoumakos, H. Wei, J. Johnson, V Martin, M. Loyd, D. Rutstrom, W. McAlexander, Y. Wu, M. Koschan, C. L. Melcher
JOURNAL OF LUMINESCENCE
(2019)
Article
Instruments & Instrumentation
Matthew Loyd, Matheus Pianassola, Charles Hurlbut, Kyle Shipp, L. Sideropoulos, Ken Weston, Merry Koschan, Charles L. Melcher, Mariya Zhuravleva
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2019)
Article
Crystallography
L. Stand, M. Zhuravleva, J. Johnson, M. Koschan, M. Loyd, Y. Wu, E. Lukosi, C. L. Melcher
JOURNAL OF CRYSTAL GROWTH
(2019)
Article
Crystallography
Matthew Loyd, Luis Stand, Daniel Rutstrom, Yuntao Wu, Jarek Glodo, Kanai Shah, Merry Koschan, Charles L. Melcher, Mariya Zhuravleva
JOURNAL OF CRYSTAL GROWTH
(2020)
Article
Crystallography
C. Delzer, M. Zhuravleva, L. Stand, C. Melcher, N. Cherepy, S. Payne, R. Sanner, J. P. Hayward
JOURNAL OF CRYSTAL GROWTH
(2020)
Article
Crystallography
Camera Foster, Yuntao Wu, Luis Stand, Merry Koschan, Charles L. Melcher
JOURNAL OF CRYSTAL GROWTH
(2020)
Article
Instruments & Instrumentation
Edgar van Loef, Urmila Shirwadkar, Lakshmi Soundara Pandian, Guido Ciampi, Luis Stand, Mao-Hua Du, Merry Koschan, Matthew Loyd, Mariya Zhuravleva, Charles Melcher, Kanai Shah
Summary: This paper investigates the crystal growth, DFT calculations, and scintillation properties of Tl(3)LnCl(6) and TlLn(2)Cl(7) (Ln = Y, Gd) crystals. These crystals belong to the Nesohalides and Phyllohalides families with varying crystal structures, and exhibit light yields typically in the range of 35,000-40,000 ph/MeV.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Chemistry, Multidisciplinary
Matheus Pianassola, Marlena Alexander, Bryan Chakoumakos, Merry Koschan, Charles Melcher, Mariya Zhuravleva
Summary: The effects of composition on the phase formation of multicomponent garnet crystals grown via directional solidification by the micro-pulling-down method are studied. Crystals with large ionic radii have a central opaque region in optical microscopy images, which is responsible for their reduced transparency. Slow pulling rates can suppress the formation of the opaque region in crystals with intermediate ionic radii.
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuangliang Cheng, Rachel E. Hunneke, Mengkun Tian, Eric Lukosi, Mariya Zhuravleva, Charles L. Melcher, Yuntao Wu
Article
Crystallography
Jianzheng Hu, Long Yan, Ning Zhou, Yao Chen, Xiaoni Yang, Lianqiao Yang, Shiping Guo
Summary: The effect and mechanism of carrier gas velocity, V/III ratio, and carrier gas velocity match on the growth rate of AlN were investigated in this study. The results showed that the growth rate of AlN initially increased with hydrogen flow rate, reached saturation, and then decreased monotonically. The turning point value depended on the equipment and process. By increasing the MO VM, the growth rate of AlN could be improved, but the uniformity deteriorated due to turbulence and loss of uniform boundary layer. High quality AlN films were successfully grown on nano-patterned sapphire substrates with improved crystalline quality and atomic smooth surfaces.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Tingting Ma, Yang Li, Kangning Sun, Qinglin Cheng, Sen Li
Summary: This study investigates the melting process and nucleation behavior of sodium crystals using molecular dynamics simulation. The results show good agreement between simulated and experimental values for the melting temperature, density, and radial distribution function of sodium. The diffusion coefficient of liquid sodium increases linearly with temperature, and the homogeneous nucleation rate of melting in superheated sodium crystal exponentially increases with temperature. The findings provide theoretical support for applications involving heat and mass transfer in sodium-related systems.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Hisato Nishii, Shintarou Iida, Akira Yamasaki, Takumi Ikenoue, Masao Miyake, Toshiya Doi, Tetsuji Hirato
Summary: Epitaxial V2O3 films were fabricated on sapphire substrates using mist chemical vapor deposition (mist CVD) method, eliminating the need for high vacuum conditions. The films can be grown on sapphire substrates even under atmospheric pressure, with the optimal growth temperature at 823 K. The films grown at 823 K exhibit a metal-insulator transition at approximately 155 K. The film on C-plane sapphire exhibits a lower transition temperature compared to those on R- and A-plane sapphire substrates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Jani Jesenovec, Kevin Zawilski, Peter Alison, Stephan J. Meschter, Sambit K. Saha, Andrew J. Sepelak, Peter G. Schunemann
Summary: In this study, NiSb needles were successfully formed in InSb by manipulating the growth rate and adding NiSb. These needle structures in InSb can be used to tune the magnetoresistance of devices. Additionally, undoped InSb crystals demonstrated good infrared transmission at low growth rates.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
D. Joseph Daniel, P. Karuppasamy, H. J. Kim
Summary: The 2-amino 4-methyl pyridinium oxalate (2A4MPO) compound was synthesized and its crystal structure, functional groups, thermal stability, electrical properties, and third-order nonlinear optical properties were studied. The results demonstrate that the synthesized crystal has good structural integrity, thermal stability, and potential for third-order nonlinear optical applications.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
C. W. Lan
Summary: The past two decades have witnessed a significant transformation in solar silicon crystal growth, especially in the competition between multi-crystalline silicon (Multi-Si) and mono-crystalline silicon (Mono-Si). The demand for this crucial material has exponentially surged, with silicon solar panels capturing over 95% of the global PV market share. The advancements in crystal growth technology during this period have set historical benchmarks, with the market share shifting from high-performance multi-crystalline silicon (HPM-Si) to CZ silicon.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peiyao Hao, Lili Zheng, Hui Zhang
Summary: A novel design of argon gas tube for removing impurities during silicon ingot growth was developed, and numerical simulations showed that it can effectively extract SiO.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Geetika Sahu, Chanchal Chakraborty, Subhadeep Roy, Souri Banerjee
Summary: This article discusses the novel fractal nature of hydrothermally synthesized MoS2 QDs. By adjusting the reaction time, the study found that the average size of QDs increases and then decreases with longer reaction times. STEM images indicate that shorter reaction times lead to sheet formation, while extended reaction times cause sheets to fragment into QDs.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Pengjian Lu, Wei Huang, Junjun Wang, Haitao Yang, Shiyue Guo, Bin Li, Ting Wang, Chitengfei Zhang, Rong Tu, Song Zhang
Summary: A systematic study on the tetramethylsilane-hydorgen (TMS-H-2) system for the deposition of pure single-crystal SiC by high-temperature chemical vapor deposition (HTCVD) method is conducted. The study investigates the effect of temperature, pressure, and H-2:TMS ratio on the deposition conditions and provides a theoretical basis and guidance for improving the quality and cost of industrial production of single-crystal SiC.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Xinyu Jiang, Liangliang Liu, Yanqing Liu, Yan Wang, Zhaoping Hou
Summary: Investigation on the preparation of anisometric templated textured high entropy or multi-element doped ferroelectric ceramics was conducted using A-site disordered niobate microcrystals. The effects of process parameters on the morphology and chemical composition were studied, and the photocatalytic properties of the microcrystals were evaluated.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Mobashsara Tabassum, Md. Ashraful Alam, Sabrina Mostofa, Raton Kumar Bishwas, Debasish Sarkar, Shirin Akter Jahan
Summary: In this study, high crystallinity copper nanoparticles were synthesized by altering the reaction medium at low temperatures. The results show that changing the reaction medium can reduce the surface energy of precursors and promote the formation of highly crystalline copper nanoparticles.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Ivan Bodnar, Vitaly V. Khoroshko, Veronika A. Yashchuk, Valery F. Gremenok, Mohsin Kazi, Mayeen U. Khandaker, Tatiana I. Zubar, Daria I. Tishkevich, Alex Trukhanov, Sergei Trukhanov
Summary: This work presents the production of single crystals of Cu2ZnGeSe4, a semiconducting quaternary compound, using a gas chemical method with iodine as a transporter. The phase state, crystal structure, and lattice constants of the synthesized samples were refined and determined. The band gap of Cu2ZnGeSe4 was calculated using transmission spectrum and it was found that the band gap increases by 12% with decreasing temperature in the range of 20-300 K.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Timur Malin, Igor Osinnykh, Vladimir Mansurov, Dmitriy Protasov, Sergey Ponomarev, Denis Milakhin, Konstantin Zhuravlev
Summary: The effect of growth temperature on the buffer leakage currents of GaN-on-Si layers was investigated. It was found that higher growth temperature results in lower leakage currents. The defects in GaN layers grown at different temperatures were studied using photoluminescence technique, and a correlation between leakage currents, structural perfection, and donor concentration in GaN-on-Si layers was established. It was also observed that reduced growth temperature leads to the formation of inversion domains.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Thi-Hoai-Thu Nguyen, Jyh-Chen Chen
Summary: The effect of heater power control on heat, flow, and oxygen transport for CCz crystal growth was studied. Shorter upper side heater design could improve crystal quality and growth, but with higher power consumption.
JOURNAL OF CRYSTAL GROWTH
(2024)
Article
Crystallography
Peter Rudolph
Summary: This article presents an overview of selected contributions to the development of crystal growth technology by the Laudise Prize awardee 2023. It discusses various aspects such as shaped crystal growth, the correlation between melt structure and crystal quality, control of intrinsic defects and inclusions, prevention of dislocation cell patterns, and melt growth experiments under a travelling magnetic field.
JOURNAL OF CRYSTAL GROWTH
(2024)