Article
Physics, Applied
Sang-il Kim, David C. Larbalestier
Summary: In this study, the transport characteristics of low-angle grain boundaries in YBCO-coated conductors were improved by using strain-driven segregation, specifically by substituting Nd3+ for Y3+. It was found that this substitution can enhance the critical current density J(c) across the grain boundaries without significant reduction in the superconducting critical temperature T-c.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Federico Baiutti, Francesco Chiabrera, David Diercks, Andrea Cavallaro, Lluis Yedra, Lluis Lopez-Conesa, Sonia Estrade, Francesca Peiro, Alex Morata, Ainara Aguadero, Albert Tarancon
Summary: This study used atom probe tomography to investigate oxygen mass transport on oxygen-isotope exchanged thin films, revealing a significant increase in oxygen kinetics due to grain boundary conduction highways.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Xin Xu, Connor Carr, Xinqi Chen, Benjamin D. Myers, Ruiyun Huang, Weizi Yuan, Sihyuk Choi, Dezhi Yi, Charudatta Phatak, Sossina M. Haile
Summary: This study reveals the variation in grain boundary properties of polycrystalline ionic materials and the correlation between grain boundary resistance and impurity concentration. The findings suggest that the grain boundary resistance may be caused by impurity-generated space charge effects and driven by the energetics of impurity segregation.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Ceramics
Boyi Qu, Daria Eiteneer, Lauren A. Hughes, Jan-Helmut Preusker, Joseph Wood, Wolfgang Rheinheimer, Michael J. Hoffmann, Klaus van Benthem
Summary: During thermal annealing at 1425 degrees C, nominal electric field strengths of 50 V/mm and 150 V/mm were applied along the grain boundary planes of a near 45 degrees (100) twist grain boundary in SrTiO3. Interface expansions of approximately 0.8 nm were observed near the positive electrode for both field strengths. However, annealing at 50 V/mm resulted in a decrease in interface width to around 0.4 nm, while higher field strength caused decomposition of the boundary structure close to the negative electrode. The migration of oxygen due to the applied electric field leads to the observed alteration of grain boundary structures, and at high field strengths, the agglomeration of anion vacancies can cause grain boundary decomposition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Hoon Kee Park, Hehsang Ahn, Tae Hyung Lee, Jae Yoon Lee, Mi Gyoung Lee, Sol A. Lee, Jin Wook Yang, Sang Jun Kim, Sang Hyun Ahn, Soo Young Kim, Chul-Ho Lee, Eun Soo Park, Ho Won Jang
Summary: This study found that the grain boundary density directly affects the overall oxygen evolution reaction (OER) process on the surface of NiFe electrocatalysts, with OER mainly occurring at the grain boundaries. Additionally, the grain boundary density alters the reaction determining steps and a significant work function difference exists between the inside of grains and grain boundaries.
Article
Chemistry, Physical
Bing-Rong Wang, Ru-Zhi Wang, Yue-Jie Bai, Li-Ying Liu, Qian-Lei Jiang
Summary: In this study, ZnO nanonets with abundant grain boundaries and hierarchical crystalline nodes were prepared using a facile hydrothermal process and annealing. The nanonets exhibited ultra-sensitive response and fast response time towards ethanol, attributed to the enhancement effect of grain boundaries in hierarchical crystalline nodes. Modeling and experiments confirmed the importance of grain boundaries in enhancing sensing performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xin An, Wei Jiang, Linhua Zhu, Lingchao Xu, Junfeng She, Jing He, Wenshuai Zhu, Huaming Li
Summary: Grain boundaries can provide highly active surfaces in catalysts, but they are often ignored due to structural variations and design difficulties. This study proposes a novel strategy to prepare nickel molybdate with rich grain boundaries (RGB-NMO). The optimized morphology of RGB-NMO increases the exposure of active sites and facilitates mass transfer in the oxidative desulfurization reaction. Moreover, the engineered grain boundaries can modulate the atomic composition and electronic structure, leading to enhanced hydrogen peroxide activation capacity. The synthesized RGB-NMO demonstrates attractive desulfurization efficiency and cycling stability, providing inspiration for the design of functional materials for efficient ODS treatment.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Nanoscience & Nanotechnology
Jonathan D. Poplawsky, Rishi Pillai, Qing-Qiang Ren, Andrew J. Breen, Baptiste Gault, Michael P. Brady
Summary: Understanding the oxygen solubility in materials is crucial for designing oxidation resistant alloys. Atom Probe Tomography (APT) provides high chemical sensitivity and resolution, revealing the oxygen content within Ni metal and grain boundaries.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Multidisciplinary
Lei Shi, Zongyi Han, Yixuan Feng, Changgeng Zhang, Qi Zhang, He Zhu, Shiping Zhu
Summary: This paper reports on the Joule heating of ionic conductors without electrochemical reactions, achieved by using electricity with a zero-phase frequency to suppress electrolysis. Demonstrations with various ionic conductors, both liquids and solids, show highly efficient energy conversion without electrochemical reactions. This heating method is simple, direct, fast, clean, and uniform, and has great potential in numerous industrial and household applications.
Article
Materials Science, Multidisciplinary
Daxing Huang, Hongjing Shang, Taiguang Li, Bowei Xie, Qi Zou, Hongwei Gu, Zhifeng Ren, Fazhu Ding
Summary: This study presents a novel method to fabricate a superconducting joining between YBCO coated conductors with large current capacities, achieving more than 90% retention of critical current. The use of an Ag layer in the joining strap promotes the recovery of superconductivity during oxygenation annealing, resulting in superior superconducting performance through optimized atomic alignment at the joined YBCO interface.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Physical
Kirill A. Bokai, Viktor O. Shevelev, Dmitry Marchenko, Anna A. Makarova, Vladimir Yu Mikhailovskii, Alexei A. Zakharov, Oleg Yu Vilkov, Maxim Krivenkov, Denis V. Vyalikh, Dmitry Yu Usachov
Summary: Intercalation of oxygen can facilitate the detection of grain boundaries in polycrystalline graphene, providing insights into their morphology, and enabling visualization through various electron microscopy methods.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Zicheng Xie, Jie Zhang, Yu Xiao, Yangcenzi Xie, Wenkun Zhu, Shuyi Yu, Tingting Hou, Shuquan Liang, Liangbing Wang
Summary: Grain boundaries in metal oxides are found to easily regulate reactive oxygen species (ROS) in aerobic oxidation reactions. MoO3-600 nanocrystals with high density of grain boundaries exhibit excellent catalytic performance and selectivity in the aerobic oxidation process.
ENERGY & ENVIRONMENTAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Daniel Mutter, Cong Tao, Daniel F. Urban, Christian Elsaesser
Summary: Oxygen vacancy formation energies play a crucial role in the abnormal grain growth of polycrystalline perovskite phases under electric field assistance. This is due to the redistribution of cationic and anionic defects between grain boundaries and bulk regions, accompanied by the formation of space charge zones. Atomistic calculations based on classical interatomic potentials are used to derive and discuss optimized structures of various grain boundaries in SrTiO3, BaTiO3, and BaZrO3 materials. The profiles of oxygen vacancy formation energies across these grain boundaries are presented, and their dependence on composition and grain boundary type is discussed.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Physics, Applied
F. Gomory, J. Souc
Summary: The second generation of conductors based on high-temperature superconducting compounds exhibit fluctuation of properties along the conductor length. Voltage fluctuations may come from just one weak spot characterized by reduced critical current. Analytical theory can predict current-voltage characteristics and superconductor properties reliably but with limitations.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Youngseok Kim, Gunwoo Kim, Bowen Ding, Dahyun Jeong, Inho Lee, Sungjun Park, Bumjoon J. Kim, Iain McCulloch, Martin Heeney, Myung-Han Yoon
Summary: Organic mixed ionic-electronic conductors have great potential as implantable electrodes and active channels for circuit architectures. This study designs high-performance electrochemical diodes and elucidates the underlying mechanism and material requirements. The broad impact of organic electrochemical diodes is demonstrated.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Valery Kaplan, Ellen Wachtel, Konstantin Gartsman, Yishay Feldman, Kyoung-Tae Park, Igor Lubomirsky
Summary: A laboratory-scale process has been developed to recycle rare earth metals from end-of-life rare-earth/iron/boron alloy permanent magnets using a 2-hour chlorine gas treatment at 673 K. The treatment produces a clinker powder consisting of rare earth metal chlorides with minimal amounts of other metals, which can be further reduced to metal through electrolysis or metallothermic reduction.
Article
Nanoscience & Nanotechnology
Maxim Varenik, Juan Claudio Nino, Ellen Wachtel, Sangtae Kim, Sidney R. Cohen, Igor Lubomirsky
Summary: This research investigated the mechanical and electromechanical properties of dense ceria ceramics doped with trivalent lanthanides. The results showed significant differences in frequency response among different dopants in cerium oxide ceramics, and smaller dopants like Lu and Yb continued to generate usable electrostrictive strain at higher frequencies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Applied
Sushrut Modak, Leonid Chernyak, Alfons Schulte, Minghan Xian, Fan Ren, Stephen J. Pearton, Igor Lubomirsky, Arie Ruzin, Sergey S. Kosolobov, Vladimir P. Drachev
Summary: In experiments, minority hole diffusion length and lifetime were measured independently in Si-doped beta-Ga2O3 Schottky rectifiers irradiated with 18MeV alpha particles and 10MeV protons. Both parameters showed a decrease with increasing temperature. The non-equilibrium minority hole mobility was calculated from the measured diffusion length and lifetime, indicating that hole self-trapping is likely not significant in the 77-295K temperature range.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Evgeniy Makagon, Olga Kraynis, Rotraut Merkle, Joachim Maier, Igor Lubomirsky
Summary: The study finds that doping decreases Young's modulus, and nominally dry samples generally have higher Young's modulus. All samples exhibit large non-classical electrostriction effects.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Andrei Kholkin, Denis Alikin, Vladimir Shur, Shiri Dishon, David Ehre, Igor Lubomirsky
Summary: Piezoelectricity is the ability of certain crystals to generate mechanical strain proportional to an external electric field. The induction of piezoelectricity in biomolecular crystals can be achieved through stereospecific doping. The study using piezoresponse force microscopy demonstrates that doping with amino acids significantly affects the shear piezoelectric response of alpha-glycine crystals.
Article
Chemistry, Multidisciplinary
Xiao-Dong Zhang, Maxim Varenik, Konstantin Zvezdin, David Ehre, Ellen Wachtel, Zengwei Zhu, Gregory Leitus, Alexander Popov, Anatoly Zvezdin, Tao Peng, Igor Lubomirsky, Xin Guo
Summary: Ceria and its solid solutions with Gd2O3 are important materials with interesting properties and various applications. However, the understanding of ceria's magnetic properties and magnetoelastic coupling is still limited. In this study, forced magnetostriction in Gd2O3-CeO2 solid solution ceramics is characterized, revealing a linear relationship between strain and Gd3+ concentration. The observed strain is attributed to the single-ion magnetostrictive response of Gd3+ to crystal field.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Leah Fuhrman Javitt, Isabelle Weissbuch, David Ehre, Igor Lubomirsky, Meir Lahav
Summary: The study found that electrofreezing is a process involving the attraction and arrangement of specific ions by an electric field, with trigonal planar ions raising the icing temperature and ions with different structures reducing it. Biguanide ions elevate the icing temperature of supercooled water when concentrated near the negatively charged crystal's interfacial water layer, while guanylurea ions act as ice-breakers.
CRYSTAL GROWTH & DESIGN
(2022)
Review
Chemistry, Multidisciplinary
Leah Fuhrman Javitt, Sofia Curland, Isabelle Weissbuch, David Ehre, Meir Lahav, Igor Lubomirsky
Summary: The ability to control the icing temperature of supercooled water (SCW) is of supreme importance in subfields of pure and applied sciences. In this Account, it is demonstrated that heterogeneous electrofreezing of SCW is a chemical process influenced by an electric field and specific ions, by capitalizing on the properties of polar crystals.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
O. Taichman, V. Kaplan, E. Wachtel, I. Lubomirsky
Summary: Sulfur dioxide in the flue gas from coal-fired power plants poses ecological and health hazards. A study was conducted to investigate the thermal decomposition of carbonyl sulfide gas (COS) for the final stage of the recycling process. The study found that the addition of catalysts did not affect the kinetics of the COS decomposition reaction. Lowering the COS concentration and reducing the flow rate led to increased COS decomposition.
SOLID FUEL CHEMISTRY
(2022)
Article
Chemistry, Physical
Evgeniy Makagon, Junying Li, Yuanyuan Li, Ellen Wachtel, Anatoly Frenkel, Igor Lubomirsky
Summary: An all-solid-state ECM device operating at room temperature was demonstrated recently. It was discovered that metal oxides other than TiOx can also be valuable components in MIEC nanocomposites functioning as working bodies (WBs) in ECM actuation. However, only the V-based composite was suitable for ECM actuation, while the other oxides showed longer response times.
SOLID STATE IONICS
(2022)
Article
Green & Sustainable Science & Technology
Valery Kaplan, Yishay Feldman, Konstantin Gartsman, Gregory Leitus, Ellen Wachtel, Igor Lubomirsky
Summary: This study describes an electrolytic process that can effectively pulverize sintered Nd2Fe14B magnets for further recycling. The experiments show that, in a 2 M KOH solution with a titanium cathode, cm-size magnet fragments can undergo hydrogen decrepitation (HD) to form powder with a grain size below 50 μm.
JOURNAL OF SUSTAINABLE METALLURGY
(2022)
Article
Chemistry, Multidisciplinary
Shiri Dishon Ben Ami, David Ehre, Andrei Ushakov, Tevie Mehlman, Alexander Brandis, Denis Alikin, Vladimir Shur, Andrei Kholkin, Meir Lahav, Igor Lubomirsky
Summary: This study reports a new method for designing pyroelectric crystals decoupled from piezoelectricity. By co-doping centrosymmetric crystals with tailor-made molecules, the polarization of the crystals exhibits two distinct contributions, providing proof of concept for designing pyroelectric materials with reduced piezoelectric coefficient.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Haiwu Zhang, Nini Pryds, Dae-Sung Park, Nicolas Gauquelin, Simone Santucci, Dennis Christensen, Daen Jannis, Dmitry Chezganov, Diana A. Rata, Andrea R. Insinga, Ivano E. Castelli, Johan Verbeeck, Igor Lubomirsky, Paul Muralt, Dragan Damjanovic, Vincenzo Esposito
Summary: Electrostriction is a property of dielectric materials where a mechanical deformation is induced in response to an applied electric field. This study reports an engineered electrostriction effect achieved through the controlled interfaces of Gd2O3-doped CeO2 and Er2O3-stabilized delta-Bi2O3 on NdGaO3 substrates. The electrostriction coefficient achieved exceeds the best known materials by three orders of magnitude, and is attributed to the coherent strain from interfacial lattice discontinuity.
Article
Chemistry, Analytical
Asaf Cohen, Hagai Cohen, Sidney R. Cohen, Sergey Khodorov, Yishay Feldman, Anna Kossoy, Ifat Kaplan-Ashiri, Anatoly Frenkel, Ellen Wachtel, Igor Lubomirsky, David Ehre
Summary: A protocol for successfully depositing textured Al0.75Sc0.25N films with low growth stress has been proposed, utilizing a TiN intermediate layer for epitaxial growth. This method is compatible with various substrates and allows for deposition of thick films without loss of orientation.
Article
Chemistry, Physical
Tahel Malka, Xiao-Dong Zhang, Ellen Wachtel, Xin Guo, Igor Lubomirsky, David Ehre
Summary: The study focused on the synthesis, preparation protocols and properties of La(OH)3 powder and pellets, highlighting the potential for cold sintering and inter-grain bridges formation under high pressure. The electrical conductivity was found to be temperature-dependent, primarily deriving from proton transfer, suggesting the potential use of dopants to enhance low temperature conductivity.
SOLID STATE IONICS
(2022)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
