Article
Crystallography
Xueyi Zheng, Jun Zheng, Chen He, Xiangquan Liu, Yuhua Zuo, Buwen Cheng, Chuanbo Li
Summary: Thin beta-(AlxGa1-x)2O3 films were grown on (2 0 1) beta-Ga2O3 substrates using MOCVD. The Al content and band gap energy of beta-(AlxGa1-x)2O3 were determined, with a band gap of 5.26 eV found for 24.1% Al content. Surface morphology analysis showed a smooth surface with bar-like particles. The growth model suggested that the film exhibited step bunching and the roughness decreased with higher Al content. Additionally, beta-(AlxGa1-x)2O3/Ga2O3 multi-quantum well structures were successfully grown and characterized.
JOURNAL OF CRYSTAL GROWTH
(2023)
Article
Engineering, Electrical & Electronic
Soyoon Kim, Jungbok Lee, Hyungsoo Ahn, Kyounghwa Kim, Min Yang
Summary: Ga2O3 thin films were hetero-epitaxially grown on 4H-SiC substrates using MOCVD. The crystal quality of the epsilon-Ga2O3 thin films grown on Si-face and C-face of 4H-SiC substrates was compared. Results showed that the epsilon-Ga2O3 film grown on a Si-face substrate exhibited better crystal quality compared to growth on a C-face. Annealing the epsilon-Ga2O3 thin film in an oxygen atmosphere transformed the crystal phase and significantly reduced the roughness.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Evgeny A. Ekimov, Vladimir S. Krivobok, Mikhail V. Kondrin, Dmitry A. Litvinov, Ludmila N. Grigoreva, Aleksandra V. Koroleva, Darya A. Zazymkina, Roman A. Khmelnitskii, Denis F. Aminev, Sergey N. Nikolaev
Summary: This study focused on the size-controllable synthesis of high-quality SiC nanocrystals, demonstrating the ability to tune crystal size by adjusting synthesis temperature. Optical properties of the SiC crystals were investigated, providing insights into carrier distribution in nanoparticles.
Article
Crystallography
Muhammad Nur Iman Ghazali, Muhammad Ammar Izmi, Siti Nor Aliffah Mustaffa, Shamsu Abubakar, M. Husham, Suresh Sagadevan, Suriati Paiman
Summary: Zinc oxide (ZnO) nanowires were grown on ZnO-seeded substrates using chemical bath deposition, with variations in seed layer deposition time and annealing temperature. Optimum properties were achieved with a 30-minute deposited ZnO seed layer, promoting better nanowire crystallinity despite no significant change in nanowire length. This study presents an optimized approach for growing aligned, high crystallinity ZnO nanowires for electrical and optical applications.
JOURNAL OF CRYSTAL GROWTH
(2021)
Article
Chemistry, Multidisciplinary
P. Armand, C. Reibel, D. Granier, M. Tillard
Summary: Crystals of the rare earth double molybdate KYb(MoO4)(2) were grown by spontaneous nucleation from a K2Mo4O13 flux. The material has been characterized using various analytical methods, revealing its crystal structure and magnetic properties. The temperature-dependent magnetic susceptibility of KYb(MoO4)(2) follows a Curie-Weiss law with a Weiss constant of -52 K.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Polymer Science
Xiang Shi, Pierre-Antoine Albouy, Pascale Launois
Summary: This study presents a different view that the evolution of X-ray patterns reflects changes in crystalline texture rather than polymorphism. This enables a quantitative description of X-ray fiber patterns but also highlights some fundamental structural issues.
Article
Crystallography
Kazutada Ikenaga, Nami Tanaka, Taro Nishimura, Hirotaka Iino, Ken Goto, Masato Ishikawa, Hideaki Machida, Tomo Ueno, Yoshinao Kumagai
Summary: The effect of high temperature homoepitaxial growth of (010) beta-Ga2O3 layer by low pressure hot-wall metal-organic vapor phase epitaxy was investigated. The growth rate decreased and the growth mode changed as the growth temperature increased. A smooth, twin-free single-crystalline homoepitaxial layer with a structural quality equivalent to that of the substrate could be grown at 1000 degrees C. The grown layers were all n-type and showed an effective donor concentration approximately equal to the Si impurity concentration.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Materials Science, Multidisciplinary
Cristina Artini, Alessandro Cingolani, Fabrizio Valenza, Umberto Anselmi-Tamburini, Giovanna Latronico, Paolo Mele
Summary: The study found that increasing pressure in the Sm-y(FexNi1-x)(4)Sb-12 system leads to changes in Sm content, increased microstrain, and decreased diffraction domain size. Beyond a certain threshold, the pressure promotes the formation of an additional phase, resulting in a reduction in power factor.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
Ryota Yabune, Shunya Shimizu, Masaharu Fujioka, Hideaki Sasaki
Summary: The effects of Ag on the phase transformation of Cu3Sb were investigated. It was found that Ag dissolved in the Cu3Sb phase, enhancing its stability. A new alloy phase with a hexagonal structure was also observed. The isothermal section of the Cu-Sb-Ag ternary phase diagram at 500 degrees C was successfully constructed based on observations of alloys with various compositions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Physical
S. Shalini, S. Shahil Kirupavathy, M. Infant Shyam Kumar
Summary: The slow evaporation method was used to successfully grow a novel nonlinear optical crystal 4DMAPBP at room temperature, and various analyses confirmed its potential for nonlinear optical applications. The crystal exhibited a monoclinic crystal system with specific space group, and demonstrated thermal stability, mechanical hardness, and positive photoconductivity. The transmittance spectra and third order susceptibility values further support its suitability for nonlinear optical applications.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Inorganic & Nuclear
Nicolas Zapp, Denis Sheptyakov, Alexandra Franz, Holger Kohlmann
Summary: Substituting hydrogen for oxygen atoms in metal oxides influences the solid-state properties, and holmium hydride oxide exhibits high thermal stability and inertness towards air, with an ordered fluorite superstructure.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Raul Segovia-Perez, Jose G. Alvarado-Rodriguez, Noemi Andrade-Lopez, Vojtech Jancik, Julian Cruz-Borbolla, Sara A. Cortes-Llamas
Summary: The reaction between enantiomerically pure (+) and (-) menthol and (R)-(+)- and (S)-(-)N-benzyl-1-phenyl-ethylamine with carbon disulfide in the presence of potassium hydroxide produced chiral xanthate and dithiocarbamates as potassium salts. These chiral 1,1-dithioligands were then reacted with diphenyltin dihalides to form four enantiomeric and isostructural pairs of diorganotin complexes. The study found that the presence of halides and sulfur atoms enhanced the formation of non-covalent interactions in the crystalline state.
Article
Materials Science, Multidisciplinary
Nayereh Soltani, Jamil Ur Rahman, Patricia Almeida Carvalho, Calliope Bazioti, Terje Finstad
Summary: This study successfully synthesized a new class of multicomponent antimonide nanoparticles through a simple method, and proposed the formation mechanism and characteristics.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Multidisciplinary Sciences
Dominique Laniel, Florian Trybel, Bjoern Winkler, Florian Knoop, Timofey Fedotenko, Saiana Khandarkhaeva, Alena Aslandukova, Thomas Meier, Stella Chariton, Konstantin Glazyrin, Victor Milman, Vitali Prakapenka, Igor A. Abrikosov, Leonid Dubrovinsky, Natalia Dubrovinskaia
Summary: This study presents the chemical and structural diversity of lanthanum hydrides synthesized under high pressure, providing clues for the search of other hydrides and high-temperature superconductors. However, assessing potentially superconducting phases and the nature of electronic transitions remains a challenge.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Joao Humberto Dias Campos, Meiry Edivirges Alvareng, Maykon Alves Lemes, Jose Antonio do Nascimento Neto, Freddy Fernandes Guimaraes, Lauro June Queiroz Maia, Ricardo Costa de Santana, Felipe Terra Martins
Summary: In this study, a novel light-emitting material was prepared by replacing the toxic cadmium element with zinc, resulting in lower emission efficiency mainly due to the cleavage of one acetate coordination bond in the zinc isomorph.
Article
Physics, Condensed Matter
Shinji Nakagomi, Satoru Kaneko, Yoshihiro Kokubun
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2015)
Article
Physics, Applied
Yoshihiro Kokubun, Shohei Kubo, Shinji Nakagomi
APPLIED PHYSICS EXPRESS
(2016)
Article
Physics, Condensed Matter
Shinji Nakagomi, Yoshihiro Kokubun
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2016)
Article
Materials Science, Multidisciplinary
Yoshihiro Kokubun, Yuta Amano, Yasuhiro Meguro, Shinji Nakagomi
Article
Materials Science, Multidisciplinary
Shinji Nakagomi, Keisuke Hiratsuka, Yoshinori Kakuda, Kokubun Yoshihiro
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2017)
Article
Crystallography
Shinji Nakagomi, Yoshihiro Kokubun
JOURNAL OF CRYSTAL GROWTH
(2017)
Article
Materials Science, Multidisciplinary
Shinji Nakagomi, Toshihide Sakai, Kentaro Kikuchi, Yoshihiro Kokubun
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2019)
Article
Physics, Applied
Shinji Nakagomi, Toshihiro Momo, Syuhei Takahashi, Yoshihiro Kokubun
APPLIED PHYSICS LETTERS
(2013)
Article
Materials Science, Multidisciplinary
Shinji Nakagomi, Yoshihiro Kokubun
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2013)
Article
Physics, Condensed Matter
Shinji Nakagomi, Satoru Kaneko, Yoshihiro Kokubun
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2015)
Article
Chemistry, Analytical
Shinji Nakagomi, Tsubasa Sai, Yoshihiro Kokubun
SENSORS AND ACTUATORS B-CHEMICAL
(2013)
Article
Physics, Condensed Matter
Shinji Nakagomi, Takashi Yasuda, Yoshihiro Kokubun
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2020)
Article
Physics, Condensed Matter
Yoshihiro Kokubun, Shinji Nakagomi
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2020)
Article
Physics, Condensed Matter
Yoshihiro Kokubun, Masato Koyanagi, Shinji Nakagomi
Summary: The study found that heat treatment temperature and Li doping have significant effects on the structural properties of NiO epitaxial films, with undoped films showing increased lattice parameters and bandgap at higher treatment temperatures. Li doping reduces the increase in lattice parameter and bandgap observed at high heat treatment temperatures.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2021)
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)