Article
Chemistry, Physical
Risi Guo, Xiulan Xu, Yan Ma, Gang Han, Lihua Wang, Jiao Teng, Guanghua Yu
Summary: In this study, MgO layer was prepared using two different methods. It was found that one method resulted in a sample with in-plane magnetic anisotropy, while the other method resulted in a sample with perpendicular magnetic anisotropy. XPS results showed that when the annealing temperature was below 300°C, the composition ratio of the interface was in the range of 0.65-0.75, and the sample exhibited perpendicular magnetic anisotropy.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Tobias Pohlmann, Florian Bertram, Jannis Thien, Jari Rodewald, Kevin Ruwisch, Timo Kuschel, Eugen Weschke, Karsten Kuepper, Joachim Wollschlaeger
Summary: We investigated the structural and magnetic properties of Fe3O4/MgO(001) and Fe3O4/NiO/MgO(001) interfaces using magneto-optical depth profiles and charge-transfer multiplet simulations. The results show that the Fe3O4/MgO(001) interface has a fully intact magnetic order, while the Fe3O4/NiO/MgO(001) interface may have an intermixed (Ni, Fe)O layer.
Article
Chemistry, Multidisciplinary
Thorsten Schultz, Dominique Lungwitz, Elena Longhi, Stephen Barlow, Seth R. Marder, Norbert Koch
Summary: The interlayer method is demonstrated as a universal approach to adjust the energy level offset at inorganic/organic semiconductor interfaces, allowing for improved electronic functionality and paving the way for novel optoelectronic device functionalities.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
James Lourembam, Khoong Hong Khoo, Jinjun Qiu, Huiqing Xie, Seng Kai Wong, Qi Jia Yap, Sze Ter Lim
Summary: Nanometer-thick Co-Fe-B/MgO based structures show reduced Gilbert damping, making them promising for next-generation ultra-low-power MRAM devices.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Coatings & Films
ZhengRong Lee, Linda Spentzouris, Manfred Mascheck, Jeff Terry
Summary: This study investigates the electronic structure of interfaces in a multilayer photocathode structure and finds that the fabrication process can lead to nonideal interfaces compared to those constructed in simulations.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Materials Science, Ceramics
Jun-Dar Hwang, You-Cheng Zhan
Summary: MgO films with different oxygen contents were deposited on ZnO substrate, and their effects on the physical properties and carrier transport in Au/MgO/ZnO MIS diodes were studied. The crystallinity of MgO films improved up to 66% oxygen content, but degraded at 100% oxygen content. The introduction of oxygen atoms compensated for oxygen vacancies in MgO films, while excess oxygen atoms absorbed on the MgO surface. The optical bandgap and roughness of MgO films increased with oxygen content. MIS diodes with 66% oxygen content exhibited reduced leakage current and Fowler-Nordheim tunnelling at high bias voltages.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Mallesh Shanigaram, Ugendar Kodam, Ji-Sub Noh, Young-Woo Nam
Summary: This study reports the structural, vibrational, surface composition, and magnetic properties of MFe2O4 (M = Ni, Co) samples before and after annealing. The results indicate the presence of a spinel structure and an inverse spinel structure in the samples. The saturation magnetization increases systematically with annealing temperature up to 1000 degrees C and then slightly decreases. Moreover, the coercivity values vary within certain ranges for different samples.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Physical
A. G. Kolesnikov, M. E. Stebliy, A. Davydenko, A. G. Kozlov, I. S. Osmushko, V. V. Korochentsev, A. Ognev, A. Gerasimenko, A. Sadovnikov, V. A. Gubanov, S. A. Nikitov, X. Wang, C. H. Wan, C. Fang, M. Zhao, X. F. Han, Alexander Samardak
Summary: The trilayer magnetic structure consisting of platinum, cobalt, and nickel oxide exhibits intriguing physical phenomena desirable for spintronics. By manipulating the thickness of the ferromagnetic layer and modifying the Co/NixOy interface, control of the magnetic anisotropy is achievable.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Khalid Mujasam Batoo, Ritesh Verma, Ankush Chauhan, Rajesh Kumar, Muhammad Hadi, Omar M. Aldossary, Y. Al-Douri
Summary: This study reported the synthesis of Gd and Nb co-doped BT ceramic oxides and investigated their structural and electrical properties. Various analysis techniques were used to characterize the samples, revealing the influence of Gd and Nb doping on the electrical properties of the ceramic materials, which were found to improve with increasing dopant concentration.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
Kazuya Z. Suzuki, Tomohiro Ichinose, Satoshi Iihama, Ren Monma, Shigemi Mizukami
Summary: The use of bcc-Co-based alloys as antiferromagnetically coupled interlayers for MnGa-based p-MTJs has been shown to enhance the TMR ratio significantly, attributed to the electronic band with the Delta (1) symmetry of the bcc-Co-based alloy.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
J. More-Chevalier, U. D. Wdowik, D. Legut, S. Cichon, E. de Prado, I. Gregora, J. Bulir, M. Novotny, L. Fekete, J. Lancok
Summary: We investigated the effects of oxygen impurities on the microstructure, surface morphology, optical absorption, and vibrational properties of scandium nitride thin films. The thin films were deposited onto magnesium oxide substrate by reactive magnetron sputtering and under ultrahigh vacuum conditions. Two different deposition temperatures were used to control the level of oxygen contamination. Various spectroscopic methods were used to characterize the thin films, including X-ray diffraction, X-ray photoelectron spectroscopy, atomic force microscopy, Raman spectroscopy, and optical microscopy. The results showed that increasing the amount of oxygen impurities resulted in higher defect content, disorientation, twin domains, and suppressed adatom mobility in the ScN films. The oxygen impurities also increased the direct energy gap and affected the phonon dynamics in the films.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Takamasa Hirai, Kento Hasegawa, Shinya Ota, Motohiro Suzuki, Tomohiro Koyama, Daichi Chiba
Summary: In Co/Pt/oxide systems, fieldlike SOT is significantly influenced by the adjacent oxide material, while dampinglike SOT is almost irrelevant to oxides. The efficiency of FL SOT in the Pt/HfO2 sample is 2.2 times greater than that in the Pt/MgO sample at the maximum. X-ray magnetic circular dichroism spectroscopy suggests that the modulation of the electronic structure at the Pt/oxide interface contributes to SOT enhancement.
Article
Materials Science, Multidisciplinary
Shoya Sakamoto, Edward Jackson, Takeshi Kawabe, Takuya Tsukahara, Yoshinori Kotani, Kentaro Toyoki, Emi Minamitani, Yoshio Miura, Tetsuya Nakamura, Atsufumi Hirohata, Shinji Miwa
Summary: In this study, the perpendicular magnetic anisotropy energy (PMA) at the Fe/MgO interface with Co-phthalocyanine (CoPc) adsorption was investigated. It was found that the CoPc adsorption increased the PMA while maintaining the voltage-controlled magnetic anisotropy effect. X-ray magnetic circular dichroism spectroscopy measurements revealed that the CoPc adsorption induced hole accumulation at the Fe surface. The enhancement of PMA was attributed to the increased orbital magnetic moment anisotropy of the Fe atoms.
Article
Physics, Condensed Matter
S. Jena, M. Zzaman, V. K. Verma, K. Ishigami, G. Shibata, T. Ishikawa, G. F. Li, M. Yamamoto, R. Shahid, T. Koide, A. Fujimori, V. R. Singh
Summary: The magnetic states of Mn and Co atoms in Mn-rich and Ge-deficient CMG Heusler alloy thin films facing an MgO barrier were studied using X-ray absorption spectroscopy (XAS) and soft X-ray magnetic circular dichroism (XMCD). It was found that even in ultrathin samples, Co atoms were not oxidized and were more spin polarized than in thicker samples. Additionally, as the CMG film thickness decreased, the spin magnetic moment of Mn increased, which has implications for spintronics device fabrication.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Inorganic & Nuclear
Qi Ouyang, Shichao Cheng, Chunhui Yang, Zuotao Lei
Summary: In this study, Ni,Co,Yb-FeOOH/CC nanorod arrays with high catalytic activity for oxygen evolution reaction (OER) were successfully synthesized. The doping of multiple ions significantly increased the concentration of oxygen vacancies and edge dislocations, which greatly enriched the catalytic active sites. Density functional theory calculations revealed that the doping of multiple ions modulated the electronic structure of the main active sites, leading to a closer d-band center to the Fermi level and a reduced Gibbs free energy change of the rate-determining step of the OER. The Ni,Co,Yb-FeOOH/CC material exhibited low overpotential and a small Tafel slope, showing great potential for practical applications.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yujue Wang, Turgut Meydan, Yevgen Melikhov
Summary: The paper presents a theoretical model to describe the effects of temperature on MBN signal, analyzing the mechanisms of direct and indirect effects under different conditions, and conducting experimental verification.
Review
Chemistry, Physical
Kinga Lasek, Jingfeng Li, Sadhu Kolekar, Paula Mariel Coelho, Lu'an Guo, Min Zhang, Zhiming Wang, Matthias Batzill
Summary: Layered transition metal dichalcogenides (TMDs) are a diverse group of materials with properties ranging from semiconducting to metallic. Single-layer TMDs exhibit distinct properties compared to multi-layer and bulk materials, especially undergoing significant changes when reduced to a single molecular layer.
SURFACE SCIENCE REPORTS
(2021)
Article
Nuclear Science & Technology
Maryna Chernyshova, Karol Malinowski, Slawomir Jablonski, Irene Casiraghi, Iraida N. Demchenko, Yevgen Melikhov
Summary: The development of new diagnostics for future thermonuclear reactors and in plasma research is crucial. This article presents ongoing research on plasma X-ray imaging technology, focusing on the design of the readout electrode structure. By evaluating expected plasma radiation and simulating spatial distribution, a suitable design for the GEM-based detector was proposed.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Chemistry, Physical
Jingfeng Li, Sadhu Kolekar, Yan Xin, Paula Mariel Coelho, Kinga Lasek, Florence A. Nugera, Humberto R. Gutierrez, Matthias Batzill
Summary: The controlled synthesis and modification of Pt-selenide and Pt-telluride phases as ultrathin films or supported nanocrystals have been investigated using physical vapor deposition and thermal treatment in this study. Post-growth vacuum annealing of thin film Pt-dichalcogenides can transform them into different phases with lower chalcogen concentration.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Kinga Lasek, Mahdi Ghorbani-Asl, Vimukthi Pathirage, Arkady V. Krasheninnikov, Matthias Batzill
Summary: Thin films of PtTe2 can be transformed into Pt3Te4 and Pt2Te2 bilayers through vacuum annealing, characterized by scanning tunneling microscopy and photoemission spectroscopy. The experiments combined with density functional theory calculations provide insights into the transformation mechanisms and the critical role of Te vacancy formation energy in stabilizing the Pt3Te4 bilayer.
Article
Engineering, Electrical & Electronic
Y. Syryanyy, M. Zajac, E. Guziewicz, W. Wozniak, Y. Melikhov, M. Chernyshova, R. Ratajczak, I. N. Demchenko
Summary: Virgin and Yb-implanted epitaxial ZnO films grown using ALD were investigated by XAS. The polarization dependence of the films determined by the orientation of the polarization vector of the synchrotron radiation to the sample surface was revealed. The implantation and subsequent annealing were found to have an important influence on the native point defect complexes in the ZnO. The presence of donor-acceptor complexes in the samples was confirmed through the comparison of experimental and modelled spectra.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Physics, Applied
Kinga Lasek, Paula M. Coelho, Pierluigi Gargiani, Manuel Valvidares, Katayoon Mohseni, Holger L. Meyerheim, Ilya Kostanovskiy, Krzysztof Zberecki, Matthias Batzill
Summary: In this study, Cr(1+delta)Te2 nanolayers were epitaxially grown on MoS2, forming van der Waals heterostructures. The experimental results showed that the growth of Cr(1+delta)Te2 nanolayers was layer-by-layer, and the delta value could be adjusted by post-growth annealing. Magnetic measurements demonstrated that all self-intercalated Cr(1+delta)Te2 nanolayers exhibited strong ferromagnetism, which was maintained in the ultrathin limit. Interestingly, the magnetic anisotropy could be tuned by changing the delta value.
APPLIED PHYSICS REVIEWS
(2022)
Editorial Material
Engineering, Electrical & Electronic
Iraida Demchenko, Yevgen Melikhov, Eric Pellegrin
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Yujue Wang, Yevgen Melikhov, Turgut Meydan
Summary: Carbon steel is crucial in the global economy and its carbon content's precise knowledge plays a vital role in determining its mechanical and magnetic properties. Magnetic Barkhausen noise, magnetic hysteresis loop, and impedance measurements are reliable tools for assessing carbon content. A multifunctional induction coil sensor is designed and optimized for measuring MBN, MHL, and impedance signals. The study theoretically analyzes and experimentally verifies the parabolic dependence of MBN envelope's maximum value on carbon content, and explains the relation between coercive field, remanence, impedance, and carbon content through analytical simulations.
IEEE TRANSACTIONS ON MAGNETICS
(2023)
Article
Chemistry, Multidisciplinary
Kinga Lasek, Jingfeng Li, Mahdi Ghorbani-Asl, Salma Khatun, Onyedikachi Alanwoko, Vimukthi Pathirage, Arkady V. Krasheninnikov, Matthias Batzill
Summary: The study shows that monolayer PtTe2 can be transformed into the metal Pt2Te2 by reacting with vapor-deposited Pt atoms. The transformation occurs by nucleating the Pt2Te2 phase within PtTe2 islands, forming a metal-semiconductor junction. The alignment of the Fermi levels of the metal and the p-doped PtTe2 is achieved by an interface dipole that accommodates the difference in the work functions of the two materials.
Article
Materials Science, Characterization & Testing
Yujue Wang, Yevgen Melikhov, Turgut Meydan
Summary: Assessing the direct effect of temperature on magnetic flux leakage (MFL) signal is complicated due to nonlinear coupling. However, temperature-dependent magnetic dipole models have been proposed to model this effect. The models have been validated by experiments on a non-oriented grain silicon steel specimen and show good agreement with the experimental results. They can be used as effective tools to understand the influences of temperature and thermal stress on MFL signals and accurately size defects when temperature is involved.
NDT & E INTERNATIONAL
(2023)
Article
Chemistry, Physical
Iraida N. Demchenko, Kostiantyn Nikiforow, Maryna Chernyshova, Yevgen Melikhov, Yevgen Syryanyy, Nadiia Korsunska, Larysa Khomenkova, Yehor Brodnikovskyi, Dmytro Brodnikovskyi
Summary: This work investigates the electronic structure modification of scandia-ceria stabilized zirconia (10Sc1CeSZ) ceramics sintered at different temperatures. Through XRD, SEM, impedance spectroscopy, and XPS analysis, it was found that the increase in sintering temperature led to higher grain ionic conductivity, accompanied by reduced porosity, increased grain size, and a shift from rhombohedral to cubic phase. XPS also revealed a surface modification in the ceramic, with the lower sintering temperature showing more Zr-OH bonds.
Article
Chemistry, Physical
H. J. Shashank, Yevgen Melikhov, Maria L. Ekiel-Jezewska
Summary: We experimentally studied the dynamics of single and double ball chains in a highly viscous silicon oil under gravity. Single ball chains were found to often rotate and not remain planar, while shorter chains formed distorted U shapes and longer chains formed distorted W shapes. Our experiments with single ball chains were successfully reproduced in numerical simulations of a single elastic filament. In addition, two ball chains in our experiments were observed to move away or approach each other depending on their initial distance.
Proceedings Paper
Automation & Control Systems
Bdereddin Abdul Samad, Fatih Anayi, Yevgen Melikhov, Mahmoud Mohamed, Ehsan Altayef
Summary: This study applies LQR and fuzzy logic LQR controllers to stabilize a three-link robot gymnast system. The study considers swing-up control and linearizing the system's mathematical model, and selects fuzzy LQR controller for system implementation. MATLAB Simulink is used to simulate the system and demonstrate outcomes.
2022 8TH INTERNATIONAL CONFERENCE ON AUTOMATION, ROBOTICS AND APPLICATIONS (ICARA 2022)
(2022)
Article
Materials Science, Multidisciplinary
L. Gladczuk, P. Dluzewski, K. Lasek, P. Aleshkevych, D. M. Burn, G. van der Laan, T. Hesjedal
Summary: In this study, layer-resolved ferromagnetic resonance was used to investigate the coupling between the magnetic layers of a Co/MgO/Permalloy magnetic tunnel junction, showing a strong interlayer interaction through the insulating MgO barrier. A theoretical model including exchange coupling and spin pumping was developed and fits to the experimental data were compared using a likelihood ratio test, providing unambiguous proof of the existence of interlayer coupling mediated by spin pumping.
Article
Nanoscience & Nanotechnology
Jie Zhang, Xiaoyang Chen, MingJian Ding, Jiaqiang Chen, Ping Yu
Summary: This study enhances the compositional inhomogeneity of relaxor ferroelectric thin films to improve their dielectric temperature stability. The prepared films exhibit a relatively high dielectric constant and a very low variation ratio of dielectric constant over a wide temperature range.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xiaoyu Chen, Ranran Zhang, Hao Zou, Ling Li, Qiancheng Zhu, Wenming Zhang
Summary: Polyaniline-manganese dioxide composites exhibit high conductivity, long discharge platform, and stable circulation, and the specific capacity is increased by providing additional H+ ions to participate in the reaction.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xutao Huang, Yinping Chen, Jianjun Wang, Gang Lu, Wenxin Wang, Zan Yao, Sixin Zhao, Yujie Liu, Qian Li
Summary: This study aims to establish a novel approach to better understand and predict the behavior of materials with multi-scale lamellar microstructures. High-resolution reconstruction and collaborative characterization methods are used to accurately represent the microstructure. The mechanical properties of pearlite are investigated using crystal plasticity simulation and in-situ scanning electron microscopy tensile testing. The results validate the reliability of the novel strategy.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Cheng Chen, Fanchao Meng, Jun Song
Summary: This study systematically investigated the unfaulting mechanism of single-layer interstitial dislocation loops in irradiated L12-Ni3Al. The unfaulting routes of the loops were uncovered and the symmetry breaking during the unfaulting processes was further elucidated. A continuum model was formulated to analyze the energetics of the loops and predict the unfaulting threshold.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Darshan Bamney, Laurent Capolungo
Summary: This work investigates the formation of adjoining twin pairs (ATPs) at grain boundaries (GBs) in hexagonal close-packed (hcp) metals, focusing on the co-nucleation (CN) of pairs of deformation twins. A continuum defect mechanics model is proposed to study the energetic feasibility of CN of ATPs resulting from GB dislocation dissociation. The model reveals that CN is preferred over the nucleation of a single twin variant for low misorientation angle GBs. Further analysis considering GB character and twin system alignment suggests that CN events could be responsible for ATP formation even at low m' values.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Bing Han, Zhengqian Fu, Guoxiang Zhao, Xuefeng Chen, Genshui Wang, Fangfang Xu
Summary: This study investigates the behavior of electric-field induced antiferroelectric to ferroelectric (AFE-FE) phase transition and reveals the evolution of atomic displacement ordering as the cause for the transition behavior changing from sharp to diffuse. The novel semi-ordered configuration results from the competing interaction between long-range displacement modulation and compositional inhomogeneity, which leads to a diffuse AFE-FE transition while maintaining the switching field.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Akib Jabed, Golden Kumar
Summary: This study demonstrates that cryogenic rejuvenation promotes homogeneous-like flow and increases ductility in metallic glass samples. Conversely, annealing has the opposite effect, resulting in a smoother fracture surface.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xin Ji, Yan Chong, Satoshi Emura, Koichi Tsuchiya
Summary: A heterogeneous microstructure in Ti-15Mo-3Al alloy with heterogeneous distributions of Mo element and omega(iso) precipitates has achieved a four-fold increase in tensile ductility without a loss of tensile strength, by blocking the propagation of dislocation channels and preventing the formation of micro-cracks.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Amit Samanta, Prasanna Balaprakash, Sylvie Aubry, Brian K. Lin
Summary: This study proposes a combined large-scale first principles approach with machine learning and materials informatics to quickly explore the chemistry-composition space of advanced high strength steels (AHSS). The distribution of aluminum and manganese atoms in iron is systematically explored using first principles calculations to investigate low stacking fault energy configurations. The use of an automated machine learning tool, DeepHyper, speeds up the computational process. The study provides insights into the distribution of aluminum and manganese atoms in systems containing stacking faults and their effects on the equilibrium distribution.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Guowei Zhou, Yuanzhe Hu, Zizheng Cao, Myoung Gyu Lee, Dayong Li
Summary: In this work, a physics-constrained neural network is used to predict grain-level responses in FCC material by incorporating crystal plasticity theory. The key feature, shear strain rate of slip system, is identified based on crystal plasticity and incorporated into the loss function as physical constitutive equations. The introduction of physics constraints accelerates the convergence of the neural network model and improves prediction accuracy, especially for small-scale datasets. Transfer learning is performed to capture complex in-plane deformation of crystals with any initial orientations, including cyclic loading and arbitrary non-monotonic loading.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Pengfei Yang, Qichang Li, Zhongying Wang, Yuxiao Gao, Wei Jin, Weiping Xiao, Lei Wang, Fusheng Liu, Zexing Wu
Summary: In this study, the HER performance of Ru-based catalysts is significantly improved through the dual-doping strategy. The obtained catalyst exhibits excellent performance in alkaline freshwater and alkaline seawater, and can be stably operated in a self-assembled overall water splitting electrolyzer.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ilias Bikmukhametov, Garritt J. Tucker, Gregory B. Thompson
Summary: Depositing a Ni-1at. % P film can facilitate the formation of multiple quintuple twin junctions, resulting in a five-fold twin structure and a pentagonal pyramid surface topology. The ability to control material structures offers opportunities for creating novel surface topologies, which can be used as arrays of field emitters or textured surfaces.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Zening Yang, Weiwei Sun, Zhengyu Sun, Mutian Zhang, Jin Yu, Yubin Wen
Summary: Multicomponent oxides (MCOs) have wide applications and accurately predicting their thermal expansion remains challenging. This study introduces an innovative attention-based deep learning model, which achieves improved performance by using two self-attention modules and demonstrates adaptability and interpretability.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ze Liu, Cai Chen, Yuanxun Zhou, Lanting Zhang, Hong Wang
Summary: This study attempts to address the gap in cooling rates between thin film deposition and bulk metallic glass (BMG) casting by correlating the glass-forming range (GFR) determined from combinatorial materials chips (CMCs) with the glass-forming ability (GFA) of BMG. The results show that the full-width at half maximum (FWHM) of the first sharp diffraction peak (FSDP) is a good indicator of BMG GFA, and strong positive correlations between FWHM and the critical casting diameter (Dmax) are observed in various BMG systems. Furthermore, the Pearson correlation coefficients suggest possible similarities in the GFA natures of certain BMG pairs.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Mike Schneider, Jean-Philippe Couzinie, Amin Shalabi, Farhad Ibrahimkhel, Alberto Ferrari, Fritz Koermann, Guillaume Laplanche
Summary: This work aims to predict the microstructure of recrystallized medium and high-entropy alloys, particularly the density and thickness of annealing twins. Through experiments and simulations, a database is provided for twin boundary engineering in alloy development. The results also support existing theories and empirical relationships.
SCRIPTA MATERIALIA
(2024)
