Article
Chemistry, Physical
S. A. Uporov, R. E. Ryltsev, V. A. Bykov, N. S. Uporova, S. Kh Estemirova, N. M. Chtchelkatchev
Summary: Magnetic cooling is a promising eco-friendly technology that requires the search for novel functional materials. Gd-based metallic glasses show potential as solid-state refrigerants, but their magnetic properties can be improved. Through element substitution in the alloy components, it is possible to enhance glass-forming ability and overall performance of the materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Shu Wen, Cuiying Dai, Weiguo Mao, Yang Zhao, Guofeng Han, Xiaoming Wang
Summary: The influences of Ag and Co additions on the thermal stability and glass-forming abilities of the alloys were systematically investigated. The mechanical performances were evaluated, and the plasticization mechanisms were discussed based on observations. The (Cu43Zr47Al7Ag3)(99.5)Co-0.5 bulk metallic glass exhibited excellent thermal stability and improved plasticity after compression tests.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Physical
Liliang Shao, Lin Xue, Qianqian Wang, Kaili Ma, Jindu Huang, Baolong Shen
Summary: In this study, the glass-forming ability of DyCoAl bulk metallic glass was improved by microalloying with Si element. The addition of Si affected the crystallization behavior of the BMG, changing the nucleation process and the growth rate of crystalline particles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Weihuo Li, Ying Huang, Qiang Wang, Xu Zhou, Ding Ding, Lei Xia
Summary: This paper investigates the glass-forming ability and magnetic properties of Tb65Ni35-xCox amorphous ribbons. The T-rg and gamma of the ribbons reach their maximum when x = 20, indicating the optimal glass-forming ability of the Tb65Ni15Co20 amorphous alloy. The amorphous alloy exhibits a Curie temperature of approximately 79 K and shows typical spin-glass-like behavior. The magnetic entropy change peak value is up to 9.47 J kg(-1) K-1 under 5 T.
Article
Chemistry, Physical
Yikun Zhang, Jian Zhu, Shuo Li, Bin Zhang, Yarning Wang, Jiang Wang, Zhongming Ren
Summary: The amorphous ribbons of RE60Co20Al20 (RE = Ho, Er, Tm) were fabricated and characterized for their magnetic properties and magnetocaloric effects. The results suggest that these materials are promising for cryogenic magnetic refrigeration applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Thermodynamics
L. Lyubenova, V. Rangelova, M. Spassova, T. Spassov
Summary: A series of Zr-based glasses were obtained by rapid melt quenching and their thermal characteristics were determined. Glass forming ability criteria were applied to predict the glass forming ability of the alloys and study its dependence on the alloy composition. The variation in the glass forming ability was mainly due to difficulties in the crystallization process rather than the stability of the melts.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Materials Science, Multidisciplinary
Jie Xiong, Tong-Yi Zhang
Summary: A data augmentation technique is used to process a training dataset and develop an ensemble machine learning model for predicting the maximal diameter of bulk metallic glasses (BMGs). The model outperforms all reported models and provides insights into the glass forming ability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Jeongsoo Kim, Yongjoo Kim, Wontae Kim, Dohyang Kim
Summary: This study investigates the use of (Ni0.35Ti0.30Cu0.15Zr0.20)(100-x)Si-x (x = 0, 0.5, 1.0, 2.0 at%) alloy as a metallic glass precursor for a superelastic alloy, finding that the addition of Si improves glass forming ability and stabilizes the supercooled liquid. The fabrication of millimetre-scale Ni-Ti-Cu-Zr-Si metallic glass was achieved by hot pressing overlapped as-cast plates, with parameters relevant to superelastic effects remaining almost constant.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Y. Tan, Y. W. Wang, X. W. Cheng, Q. Fu, Z. H. Xin, Z. Q. Xu, H. W. Cheng
Summary: The study found that appropriate Al substitution can improve the glass-forming ability, strength, and plasticity of amorphous alloys, but fracture strength decreases and no dynamic compression plasticity is observed during dynamic loading.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
Ling Bai, Ziyang Ding, Haiying Zhang, Chunxiang Cui
Summary: Ti-based alloys fabricated by a single roller spun-melt technique exhibit excellent glass-forming abilities and have a large supercooled liquid region. These amorphous alloys also show relatively high corrosion resistance in corrosive solutions.
Article
Materials Science, Multidisciplinary
Natalia Lindner, Zbigniew Sniadecki, Mieszko Kolodziej, Jean-Marc Greneche, Jozef Marcin, Ivan Skorvanek, Bogdan Idzikowski
Summary: A magnetocaloric effect with wide tunability was observed in melt-spun amorphous Gd65Fe15-xCo5+xAl10Si5 alloys of different Fe/Co ratios. The Curie temperatures of the samples were between 155 and 195 K and increased with decreasing Co content. The highest magnetic entropy change ΔS-M was obtained for Gd65Fe5Co15Al10Si5 when the magnetic field was increased from 0 to 5 T.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Mehdi Malekan, Reza Rashidi, Mansoor Bozorg, Nick Birbilis
Summary: The effect of yttrium (Y) on the glass-forming ability (GFA), mechanical properties and corrosion of (Cu50Z-r43Al7)100-xYx alloys was studied. The addition of Y improved the GFA of Cu50Zr43Al7 alloy, with a GFA of 15 mm obtained for (Cu50Zr43Al7)98Y2. The bulk metallic glasses (BMGs) exhibited limited plastic strain but achieved high compressive fracture strength and Young's modulus. The corrosion resistance of the BMGs was improved by the addition of Y.
Article
Materials Science, Ceramics
Mehdi Malekan, Reza Rashidi, Saeed G. Shabestari, Juergen Eckert
Summary: In this study, the effect of different yttrium doping levels on the glass-forming ability of copper-zirconium-aluminum-based metallic glasses was investigated from thermodynamic and kinetic perspectives. The amorphous structure of the alloys was confirmed using various techniques, and the correlation between the forming ability and thermodynamics/kinetics factors was established through the analysis of thermal characteristics. The results showed that 2% yttrium doping significantly improved the glass-forming ability of the metallic glasses. Yttrium enhances the forming ability by promoting a more densely packed atomic configuration and scavenging oxygen as an undesirable element.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
D. L. Ouyang, Y. H. Yan, S. S. Chen, D. Huang, Z. R. Wang, X. Cui, Q. Hu, S. Guo
Summary: In this study, a simple method was used to quantify the castability and glass-forming ability (GFA) of two SIM card slots with different designs, as well as at different casting temperatures. It was found that the Zr55Cu30Ni5Al10 (Zr55) alloy has a wider optimal casting temperature range compared to the Zr52.5Cu25Ni9.5Al7Ti6 (Zr52.5) alloy, indicating better GFA of Zr55. However, within the optimal casting temperature range, the castability of Zr52.5 was significantly better than that of Zr55 due to its lower melting point, poorer wettability to the copper mold, and higher optimal casting temperature. These findings provide guidance for the production of Zr-based bulk metallic glass components.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Xuan Liu, Xingfu Wang, Yongli Si, Fusheng Han
Summary: The Al70Fe12.5V12.5Ni5, Al70Fe12.5V12.5Zr5, and Al70Fe12.5V12.5Nb5 alloys prepared by mechanical alloying were studied to investigate the influence of Zr, Nb, or Ni addition on the glass-forming ability of Al-Fe-V amorphous alloys. The Al70Fe12.5V12.5Ni5 alloy exhibited higher glass-forming ability and activation energies of crystallization compared to the other two alloys. Analysis showed that the effective atomic size ratio value was more significant than the values of mixture enthalpy in determining the glass-forming ability of these amorphous alloys.
Article
Physics, Applied
Anis Biswas, N. A. Zarkevich, Y. Mudryk, Arjun K. Pathak, A. Smirnov, V. P. Balema, Duane D. Johnson, V. K. Pecharsky
Summary: Proper coupling between structural and magnetic transitions is crucial for controlling and improving the magnetocaloric properties of alloys. Chemical substitutions have been demonstrated to effectively control the magnetocaloric properties of Mn0.5Fe0.5NiSi0.94Al0.06 alloy, with B doping leading to one of the highest magnetic-field-induced entropy changes near room temperature.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Tyler J. Slade, Volodymyr Gvozdetskyi, John M. Wilde, Andreas Kreyssig, Elena Gati, Lin-Lin Wang, Yaroslav Mudryk, Raquel A. Ribeiro, Vitalij K. Pecharsky, Julia Zaikina, Sergey L. Bud'ko, Paul C. Canfield
Summary: Canfieldite, a semiconducting mineral with high ionic conductivity, photosensitivity, and low thermal conductivity, undergoes a known cubic to orthorhombic phase transition at 460K and a second structural transition at 120K. The low-temperature phase adopts a different orthorhombic structure and can be kinetically arrested into a metastable state. The preferred structures of Ag8SnS6 are related to the unit cell volume, with smaller phase volume favoring a specific arrangement.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Prashant Singh, Tyler Del Rose, Guillermo Vazquez, Raymundo Arroyave, Yaroslav Mudryk
Summary: In this study, a descriptor-based machine-learning approach was employed to assess the effect of chemical alloying on the formation enthalpy of rare-earth intermetallics. A rare-earth database was developed using high-throughput density-functional theory (DFT) with more than 600 compounds. The machine-learning method based on SISSO was used to train and test the formation enthalpies, and the complex lattice function was used to investigate the effect of transition metal alloying on energy stability. The study provides quantitative guidance for compositional considerations and facilitates the discovery of new metastable materials.
Article
Nanoscience & Nanotechnology
Rajiv K. Chouhan, Tyler J. Del Rose, Yaroslav Mudryk, Vitalij K. Pecharsky
Summary: We studied the LaFeSi phase using density functional theory and investigated the effect of p-element substitution on its stability and magnetic properties. We found that partial or complete substitutions at the Si 2c-site with p-block elements result in non-zero Fe moments. The partially substituted LaFeSi1-yGay and LaFeSi1-yAly were thermodynamically more stable than the fully substituted LaFeGa and LaFeAl. However, compounds containing phosphorus had the most negative formation energies but were non-magnetic. This work provides insights into manipulating the suppressed Fe-moments in LaFeSi-related compounds and advancing the magnetic functionalities of LaFeX compounds.
Article
Materials Science, Multidisciplinary
Anis Biswas, Rajiv K. Chouhan, O. Dolotko, A. Thayer, S. Lapidus, Y. Mudryk, V. K. Pecharsky
Summary: Temperature-dependent studies on Pr2In reveal that the unusual anhysteretic first-order paramagnetic-ferromagnetic phase transition is related to concurrent changes in both the magnetic and crystallographic lattices. The density functional theory calculations show that the compound's electronic structure is extremely sensitive to small lattice parameter changes, explaining the strong magnetoelastic coupling. Near the critical temperature, the compound exhibits a significant maximum entropy change comparable to other known cryogenic magnetocaloric materials.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tyler J. Del Rose, Yaroslav Mudryk, Daniel Haskel, Arjun K. Pathak, Vitalij K. Pecharsky
Summary: The study explores the unexpected physical phenomena resulting from the seemingly inconsequential substitutions of chemically similar lanthanide elements in the Pr1-xGdxScGe system, which sheds light on rare-earth magnetism and materials design. The robust antiparallel arrangement of large 4f magnetic moments of light and heavy lanthanides enables precise control of net magnetization and gives rise to an unusual magnetic memory and strong exchange bias. This finding expands the materials base beyond artificial magnetic multilayers and broadens the range of potential applications of the phenomenon.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Anis Biswas, Rajiv K. Chouhan, Alex Thayer, Yaroslav Mudryk, Ihor Z. Hlova, Oleksandr Dolotko, Vitalij K. Pecharsky
Summary: The rare-earth intermetallic compound Nd2In exhibits a large magnetocaloric effect near the boiling point of natural gas. The paramagnetic-ferromagnetic transformation supporting this effect is found to be first order in nature, despite the lack of changes in lattice symmetry and discontinuities in phase volume or lattice parameters. This borderline first-order nature of phase transformation in Nd2In differs significantly from conventional first-order magnetic transitions in other related compounds.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Chemistry, Physical
Prashant Singh, Tyler Del Rose, Andriy Palasyuk, Yaroslav Mudryk
Summary: In this study, a machine-learning model was used to predict the Curie temperature of multicomponent magnetic materials, and the accuracy of the predictions was validated through experiments. Electronic structure calculations were performed to investigate the relationship between the electronic density of states and the Curie temperature, providing insights for designing new high-performance magnets.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yao Abusa, Philip Yox, Sarah D. Cady, Gayatri Viswanathan, Jemima Opare-Addo, Emily A. Smith, Yaroslav Mudryk, Oleg I. Lebedev, Frederic A. Perras, Kirill Kovnir
Summary: A novel synthetic route has been developed for activating elemental selenium using a solvothermal approach, resulting in a variety of selenium-containing materials with demonstrated versatility and potential for applied and fundamental research.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Sudip Chakraborty, Shuvankar Gupta, Santanu Pakhira, Anis Biswas, Yaroslav Mudryk, Renu Choudhary, Amit Kumar, Amitabh Das, Chandan Mazumdar
Summary: The crystal structure and magnetic properties of RuMnGa have been investigated, revealing its ferromagnetic ordering and reentrant canonical spin-glass behavior.
Article
Materials Science, Multidisciplinary
Sudip Chakraborty, Shuvankar Gupta, Santanu Pakhira, Renu Choudhary, Anis Biswas, Yaroslav Mudryk, Vitalij K. Pecharsky, Duane D. Johnson, Chandan Mazumdar
Summary: The compound exhibits long-range antiferromagnetic order at 16 K, a long-range ferrimagnetic transition at 6.5 K, and a reentrant cluster-glass transition below Tf similar to 3 K, which could be correlated with competing antiferromagnetic and ferrimagnetic structures predicted theoretically.
Article
Materials Science, Multidisciplinary
B. P. Alho, P. O. Ribeiro, V. S. R. de Sousa, B. C. Margato, Anis Biswas, Tyler Del Rose, R. S. de Oliveira, E. P. Nobrega, P. J. von Ranke, Y. Mudryk, V. K. Pecharsky
Summary: This study focuses on the crystal structure and magnetic properties of GdNi material, introducing a microscopic model to explain its magnetocaloric effect. Through density functional theory calculations and magnetoelastic coupling model, the results show a certain consistency with experimental data.
Article
Materials Science, Multidisciplinary
Y. Mudryk, A. K. Pathak, D. L. Schlagel, T. A. Lograsso, V. K. Pecharsky
Summary: Magnetic, specific heat, and electrical transport measurements of Gd4ScGe4 single crystals reveal a sharp magnetostructural transformation at 63 K. The electrical resistivity shows anomalous behavior due to electron-paramagnon scattering and intermediate lattice states. The low-temperature heat capacity is influenced by a magnetic component and electron-magnon scattering caused by spin waves.
Article
Materials Science, Multidisciplinary
Tyler Del Rose, Arjun K. Pathak, Yaroslav Mudryk, Vitalij K. Pecharsky
Summary: Partial substitution of light lanthanide Pr with heavy lanthanide Gd in Pr0.75Gd0.25ScGe results in a complex magnetic ground state, leading to spontaneous and conventional exchange bias phenomena. Shape-dependent magnetic compensation and bias phenomena also occur in small external magnetic fields.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Anis Biswas, N. A. Zarkevich, Arjun K. Pathak, O. Dolotko, Ihor Z. Hlova, A. Smirnov, Y. Mudryk, D. D. Johnson, V. K. Pecharsky
