Article
Chemistry, Inorganic & Nuclear
N. I. Matskevich, A. N. Semerikova, V. P. Zaitsev, M. Yu. Matskevich, A. Yu. Novikov
Summary: Bismuth niobates doped with lutetium and dysprosium were synthesized by solid-state reaction. The standard formation enthalpies and lattice enthalpies of the compounds were studied and it was found that they increased with decreasing radius of the rare-earth element. Linear relationships between lattice enthalpies, standard formation enthalpies and rare-earth element radii were derived to predict the thermodynamic characteristics of uninvestigated compounds. The heat capacity of the compound with dysprosium was measured and a phase transition was observed at around 500 K. The compound with lutetium was found to be the most thermodynamically stable and preferred for application.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
N. Matskevich, A. N. Semerikova, V. A. Trifonov, D. Kochelakov, I. Korolkov, V. N. Shlegel, M. Yu Matskevich, O. Anyfrieva
Summary: Cesium dimolybdate (Cs2Mo2O7) single crystal was successfully grown using a low-temperature-gradient Czochralski technique. Cs2Mo2O7 is a promising material for investigating rare events, and cesium (Cs) is an important fission product for assessing severe accident consequences. The standard formation enthalpy, lattice enthalpy, and stabilization energy of Cs2Mo2O7 were determined for the first time. The results showed that Cs2Mo2O7 is thermodynamically stable at room temperature compared to the decomposition into simple oxides (Cs2O, MoO3).
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yu-Cai Wu, Yuan-Xin Li, Xi -Chun Zhong, Cui-Lan Liu, Jiao-Hong Huang, Hong-Ya Yu, Zhong-Wu Liu, Ming -Long Zhong, Zhen-Chen Zhong, Raju V. Ramanujan
Summary: LaFeSi bulk magnetocaloric materials were prepared using hot-pressing sintering and spark plasma sintering techniques. The reduction of porosity was found to enhance the magnetocaloric effect.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
Ahmad Ostovari Moghaddam, Dmitry Mikhailov, Rahele Fereidonnejad, Nataliya Shaburova, Denis Vinnik, Daniil Uchaev, Fu-Quan Bai, Dawid Janas, Evgeny Trofimov
Summary: High entropy intermetallic compounds (HEICs) are a new type of high entropy materials (HEMs) with the potential to exhibit unusual properties. Several HEICs were successfully fabricated using a melting technique, showing different crystal structures, microstructures, and mechanical properties. One HEIC achieved the highest microhardness value reported for an as-cast metallic HEM. These findings contribute to the expedited discovery of new single-phase HEICs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Thermodynamics
Paola Rodriguez-Estupinan, Ingrid Miranda-Carvajal, Paula Cantor Campos, Carlos Alberto Guerrero-Fajardo, Liliana Giraldo, Juan Carlos Moreno-Pirajan
Summary: This review paper focuses on the synthesis methods of graphene-based materials and the characterization of their thermal properties and surface-molecule interactions using calorimetric techniques. The results show that graphene materials are well dispersed and exhibit improved mechanical and electrical properties in nanocomposites. Graphene is compatible with metals such as aluminum, while GO is compatible with silver, leading to decorated nanocomposites.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
Yin-Ku Lee, Zih-You Wu, Pin-Wei Huang, Chen-Sung Chao, Su-Yueh Tsai, Shou-Yi Chang, Jenq-Gong Duh
Summary: For advanced 2.5D/3D IC applications, it is important to suppress IMCs and maintain phase stability. The use of novel microbumps has been investigated to inhibit IMCs and void formation, resulting in improved reliability. The study identifies four types of IMC and their impact on the microbump's reliability.
Article
Chemistry, Physical
J. Cwik, Y. Koshkid'ko, M. Malecka, B. Weise, M. Krautz, A. Mikhailova, N. Kolchugina
Summary: In-depth investigations were conducted on the magnetocaloric properties of polycrystalline Tb1-xHoxNi2 intermetallic compounds, revealing differences in magnetic entropy change and adiabatic temperature change among compounds with different compositions. The impact of holmium content on the magnetic and magnetocaloric properties of Laves-phase compounds was discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
J. Cwik, Y. Koshkid'ko, K. Nenkov, E. Tereshina-Chitrova, N. Kolchugina
Summary: The study focused on the magnetic entropy change and thermodynamic properties of polycrystalline pseudo-binary Tb1-xErxNi2 solid solutions, with emphasis on Er substitution for Tb causing changes in crystal structure. It was found that the substitution of Er for Tb resulted in a decrease in the ordering temperature of the pseudo-binary compounds, leading to an increase in the maximum magnetic entropy change.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Boris N. Solomonov, Mikhail Yagofarov, Ruslan N. Nagrimanov
Summary: A new method was proposed for predicting the vaporization enthalpies of alkylaromatic compounds by decomposing the vaporization enthalpy of aromatic substituents and aliphatic compounds. The vaporization enthalpies of 174 compounds were calculated and found to be competitive in accuracy with experimental techniques.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Vitalii Shtender, Daniel Hedlund, Simon Rosenqvist Larsen, Peter Svedlindh, Martin Sahlberg
Summary: The Ce-Fe-Mn and Ce-Co-Mn systems have been re-investigated, leading to the discovery of two new potential phases for permanent magnets: Ce-3(Fe0.638Mn0.362)(29) and CeCo8Mn3. These compounds exhibit unique crystal structures and magnetic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
N. Matskevich, A. N. Semerikova, V. N. Shlegel, V. P. Zaitsev, M. Yu Matskevich, O. Anyfrieva
Summary: A high perfect single crystal of Li2W0.95Mo0.05O4 was successfully grown with a low-temperature-gradient Czochralski technique, and its thermodynamics properties were studied. The results indicated that the stabilization energy of Li2W0.95Mo0.05O4 is significantly higher than that of ZnMoO4 and CdWO4, and a correlation was found between lattice energy and luminescence wavelength in Li2W1-xMoxO4 compounds.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Qizhong Zhao, Fanghua Tian, Jiale Guo, Yin Zhang, Chao Zhou, Sen Yang, Xiaoping Song
Summary: Polycrystalline Ni20Mn3B6 alloys with different heat treatment methods were synthesized and their negative magnetization was studied. It was found that the negative magnetization can be tuned by the interatomic distance of the alloys, which can affect the exchange interaction of systems. Additionally, a bipolar switching of magnetization under a low field was observed near the compensation temperature.
Article
Materials Science, Multidisciplinary
Xinyang Jiao, Yu Zhang, Yang Yu, Chengyi Xu
Summary: Porous TiAl3 intermetallics with high porosity were synthesized by thermal explosion reaction. It exhibited an open pore structures and uniform pore size distribution, making it suitable for solid-liquid filtration and separation.
Article
Chemistry, Multidisciplinary
S. Bellafkih, H. Jaballah, L. Bessais
Summary: In this study, the structural, magnetic, and magnetocaloric properties of Gd1-xSmxCo2 (x = 0.5, 0.6, and 0.7) intermetallic compounds were systematically investigated. The samples were prepared by arc melting under high-pure argon and homogenized at 800 K to minimize impurity phases. X-ray diffraction analysis revealed that all samples exhibited a cubic MgCu2-type structure (Space group Fd-3m). The magnetic measurements showed that the Curie temperature (TC) decreased from 404 K (for x = 0) to 263 K (for x = 0.7) with increasing Sm content. The magnetocaloric properties, including the magnetic entropy change and relative cooling power, were calculated and analyzed.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Simone Pezzotti, Federico Sebastiani, Eliane P. van Dam, Sashary Ramos, Valeria Conti Nibali, Gerhard Schwaab, Martina Havenith
Summary: Hydration free energies are determined by the delicate balance between hydrophobic and hydrophilic interactions. A spectroscopic approach using THz spectroscopy allows direct access to the contributions of cavity formation and hydrophilic interactions, and enables the separate determination of the thermodynamic effects of hydrophobic and hydrophilic interactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)