Article
Materials Science, Ceramics
Yao Xiao, Rainer Waser, Theodor Schneller
Summary: In this study, the parameters for the formation of 10% yttrium-doped barium zirconate thin films were systematically investigated using a low-cost chemical solution deposition method. By modifying the precursor solution and thermal treatment schedules, the microstructure and growth orientation were controlled. The relationship between microstructures and electrochemical properties was discussed, highlighting the importance of denser films with larger grains for better performance.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Review
Materials Science, Multidisciplinary
Mari Napari, Tahmida N. Huq, Robert L. Z. Hoye, Judith L. MacManus-Driscoll
Summary: Nickel oxide (NiOx) is a key p-type oxide semiconductor with versatile and tunable properties, widely used in electronic devices. The properties of NiO(x) thin films strongly depend on the deposition method and conditions. Efficient implementation of NiO(x) in next-generation devices will require controllable growth and processing methods.
Article
Chemistry, Inorganic & Nuclear
Aida Raauf, Jennifer Leduc, Michael Frank, Daniel Stadler, David Graf, Michael Wilhelm, Matthias Grosch, Sanjay Mathur
Summary: In this study, UO2 thin films were synthesized by CVD using a U(VI) precursor, and it was found that the application of magnetic fields can alter the morphology and crystallographic orientation of grains, reduce grain size, promote polycrystalline growth, and decrease surface oxidation of U(IV) centers. The presence of a magnetic field as an extrinsic parameter in the CVD process has a positive effect on controlling the texture and chemical homogeneity of the grown films.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Nadia C. Vega, Benjamin Straube, Oscar Marin-Ramirez, David Comedi
Summary: We report the fabrication of highly c-oriented and transparent ZnO films with a high UV/visible luminescent ratio on glass substrates using a simple low temperature-atmospheric pressure chemical vapor deposition technique. The films were grown at 240 degrees C, with zinc acetate and water vapor as precursors, eliminating the need for a vacuum system. Varying the source-substrate distance yielded films with different growth rates (ranging from 2 to 44 nm/min), and the film grown with the highest growth rate exhibited a narrower bandgap due to a violet component in the photoluminescence spectra.
Article
Materials Science, Multidisciplinary
P. Bosso, A. Milella, V. Armenise, F. Fanelli, F. Fracassi
Summary: Polymeric films containing hydrophilic and hydrophobic functionalities are of interest for various applications, and in this study, the plasma copolymerization of hexafluoropropene - acrylic acid mixtures was reported. By adjusting the monomers' ratio and plasma power, the relative amount of hydrophilic and hydrophobic functionalities in the deposited films can be finely tuned, resulting in different wetting behaviors and proton conductivities ranging from 20-70 mS cm(-1).
Article
Materials Science, Multidisciplinary
J. Potocnik, M. Popovic, M. Mitric, Z. Rakocevic
Summary: The deposition angle has a significant influence on the porosity, crystallinity, surface roughness, as well as the optical and electrical properties of nickel thin films. Variations in refractive index, extinction coefficient, and resistivity were observed with different deposition angles, which can be correlated with changes in microstructure and porosity of the films.
Article
Chemistry, Multidisciplinary
Yuan Zhou, Kasun Fernando, Juanyong Wan, Fangze Liu, Shreetu Shrestha, Jeremy Tisdale, Chris J. Sheehan, Andrew C. Jones, Sergei Tretiak, Hsinhan Tsai, Huihui Huang, Wanyi Nie
Summary: The CVD method was used to grow high quality, large size all-inorganic cesium lead bromide perovskite crystalline film for the first time, exhibiting exceptional optical properties. The growth kinetics revealed that deposition rate and growth temperature are key parameters for achieving large scale crystal growth. This demonstration suggests the potential of CVD grown all-inorganic perovskite thin films for photovoltaic or photo-detector applications.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Weiqu Chen, Zimin Chen, Zeqi Li, Zeyuan Fei, Yanli Pei, Gang Wang, Zhiyuan He
Summary: High quality epsilon-phase gallium oxide (Ga2O3) thin films have been successfully grown on silicon substrates using metal-organic chemical vapor deposition (MOCVD). The growth pressure is found to be an important parameter that affects the thin film quality.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Coatings & Films
Yao Xiao, Rainer Waser, Theodor Schneller
Summary: Proton conducting yttrium-doped barium zirconate (BZY) thin films were successfully synthesized using chemical solution deposition (CSD). By adjusting the precursor solution concentration for seed layer deposition, BZY films with different orientations and microstructures were obtained. The films with preferred (111) and (100) orientations were fabricated on platinized silicon wafers, which is rarely reported before. The annealing temperature was relatively low (950 degrees C) compared to bulk BZY processing, and the films exhibited certain orientations and larger grains.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Crystallography
Feifei Lan, Rui Zhou, Ziyue Qian, Yuansha Chen, Liming Xie
Summary: In this study, Fe3O4 thin films with room-temperature ferrimagnetism were successfully grown using a simple chemical vapor deposition method. The films maintained good magnetic properties even at thicknesses as low as 4 nm. Various analysis techniques were used to study the structure and quality of the films, and it was found that the saturation magnetization was higher than that of bulk materials and the Verwey transition was observed. This work provides a new method for synthesizing ultrathin films with ferrimagnetic properties for applications in electronics, spintronics, and memory devices.
Article
Chemistry, Multidisciplinary
Paolo Giusto, Daniel Cruz, Tobias Heil, Nadezda Tarakina, Maddalena Patrini, Markus Antonietti
Summary: By chemically vapor depositing BCN thin films from a single source precursor, high transparency and refractive index values for reflective mirrors and lenses are achieved. These wide-bandgap semiconductor materials, with positive valence band, demonstrate stability against oxidation making them ideal for protective coatings and charge transport layers in solar cells. The simple and low-hazard method can open up possibilities for BCN thin films in optics and optoelectronics.
Article
Materials Science, Multidisciplinary
Hisashi Yamada, Sho Inotsume, Naoto Kumagai, Toshikazu Yamada, Mitsuaki Shimizu
Summary: Two different boron precursors, diborane and trimethyl boron, were investigated for h-BN growth, with the BN layer grown using TMB containing a higher amount of carbon atoms and exhibiting turbostratic BN structure compared to that grown using B2H6. The Raman peak frequencies and widths indicate that TMB induces a larger compressive strain and prevents the formation of highly crystalline h-BN thin films.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Mike Haddad, Onur Kurtulus, Michael Mertens, Kai Bruehne, Peter Glueche, Hans Fecht
Summary: The residual stresses of micro-and nano-crystalline diamond thin films grown using hot filament chemical vapor deposition (HFCVD) were investigated in this study. The range of these stresses varies widely and can be controlled by process parameters. The substrate deflection technique was used to measure the stresses in the prepared diamond films. Results showed that the diamond film stress could vary from tensile to compressive depending on the applied parameters, providing the possibility to control and optimize the stresses in such films.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Antoine Raison, Nathalie Prud'homme, Wu Wang, Diana Dragoe, Nita Dragoe
Summary: We have successfully synthesized a multi-cationic oxide (MgCoNiCuZn)O through pulsed liquid injection chemical vapor deposition. The synthesis was carried out at temperatures ranging from 400 degrees C to 550 degrees C, using five metal-organic precursors solubilized in dimethoxyethane (DME). The microstructure of the material was analyzed using HRTEM with HAADF, SEM, EDS, XPS, and XRD techniques before and after annealing.
Article
Engineering, Chemical
David Redka, Milan Buttberg, Gerhard Franz
Summary: This article discusses the issue of longitudinal decreasing film thickness and its solution, providing a theoretical model and experimental verification. By predicting the sticking coefficient curve, the actual homogeneous film thickness can be obtained and shown to be in good agreement with the prediction. Additionally, it is found that there is a maximum achievable homogeneous film thickness in the tube, which can be understood as the coating efficiency.
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, Multidisciplinary
Sinchul Yeom, Kenneth D. Kihm, Chien-Te Hsieh, Tae-Sik Oh
Summary: A facile mercury ion quantification method was developed using graphene quantum dots (GQD) coated filter paper disks in a 3D-printed well array, with changes in GQD fluorescent brightness dependent on mercury ion concentration measured via optical microscopy image processing. The study also observed the dependency of mercury ion detection sensitivity on the amount and type of GQDs. The approach may be easily adapted for hand-held mobile mercury ion quantification devices in the future.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Ali Rashti, Xiner Lu, Alex Dobson, Ehsan Hassani, Farshad Feyzbar-Khalkhali-Nejad, Kai He, Tae-Sik Oh
Summary: Highly porous Co3O4/NiCo2O4 nanostructures were synthesized by adjusting the oxide composite structure through modifications in ZIF-67 crystallite size and pore structure using the coordination modulation method. The nanostructured Co3O4/NiCo2O4 exhibited a maximum capacitance of 770 F g(-1) with good cycle stability, maintaining 70% of the initial capacitance after 10,000 charge-discharge cycles.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Louis S. Wang, Sawankumar Patel, Erica Truong, Yan-Yan Hu, Sossina M. Haile
Summary: CsH2PO4 has been found to form solid solutions with CsH5(PO4)2, and the resulting cubic phase shows exceptional conductivity and phase behavior, which could extend the low-temperature operating limit of solid acid devices.
CHEMISTRY OF MATERIALS
(2022)
Article
Materials Science, Ceramics
Xin Qian, Sossina M. Haile, Timothy C. Davenport, Emanuela Mastronardo
Summary: The thermodynamics of reduction in variable valence oxides play a crucial role in controlling material functionality. This study provides best practices for material characterization by measuring YMnO3-delta as an example. The enthalpy of reduction was found to be 304 +/- 4 kJ (mol-O)(-1) in the nonpolar, centrosymmetric phase.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Ruiyun Huang, Connor G. Carr, Chirranjeevi Balaji Gopal, Sossina M. Haile
Summary: In this study, a general electrochemical method for determining nonstoichiometry in thin film MIECs was demonstrated via measurement of the chemical capacitance. Impedance spectra measurements were conducted on ceria and ceria-zirconia materials under different oxygen partial pressures and temperatures. The results showed that nonstoichiometry values can be accurately determined from the chemical capacitance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Editorial Material
Multidisciplinary Sciences
Arthur J. Shih, Sossina M. Haile
Article
Energy & Fuels
Jiahui Lou, Zhenyu Tian, Yunyun Wu, Xiao Li, Xin Qian, Sossina M. Haile, Yong Hao
Summary: This research develops a rapid assessment and screening model for nonstoichiometric oxides, aiming to achieve high solar-to-fuel efficiency. The results show that CeO2 has the highest efficiency under specific conditions.
Article
Chemistry, Inorganic & Nuclear
Elise A. Goldfine, Jill K. Wenderott, Matthew E. Sweers, Shobhit Pandey, Linsey C. Seitz, Michael J. Bedzyk, Sossina M. Haile
Summary: Molybdenum nitrides and oxynitrides have been widely used as catalysts in various reactions. This study focuses on the synthesis of cubic gamma-Mo2N at reduced temperatures and with high surface area. Different precursors were used and the resulting products showed promising catalytic activity, especially for the hydrogen evolution reaction.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Seyed MortezaTaghavi Kouzehkanan, Jong-Eun Hong, Tae-Sik Oh
Summary: Metal exsolution catalyst is of interest to catalysis researchers due to its unique properties. X-ray diffraction patterns were closely examined to understand the palladium exsolution/dissolution with lanthanum ferrite (LFO). The addition of Fe2O3 did not affect the reversibility of the Pd exsolution/dissolution. Complete dissolution of exsolved Pd into the Fe matrix was observed at 800 degrees C, indicating that Pd exsolution from LFO is a surface phenomenon.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Seyed Morteza Taghavi Kouzehkanan, Ehsan Hassani, Farshad Feyzbar-Khalkhali-Nejad, Tae-Sik Oh
Summary: The carbonation behavior of calcium-containing sorbents, CaO and Ca(OH)(2), was studied. Reactive ball milling was used to mechanically drive the carbonation reaction, and the carbonation rate was determined by monitoring the CO2 pressure inside the milling jar. The addition of citric acid in CaO synthesis resulted in an increase in sorbent surface area and improved CO2 conversion. The hydroxide counterpart showed a higher initial carbonation rate and greater CO2 uptake, but the formation of byproduct water limited further carbonation of Ca(OH)(2). The effective activation energy for decarbonation was found to be about 72 kJ mol(-1) for the high surface area CaO sorbent milled with water.
Article
Environmental Sciences
Samuel Krebsbach, Jianzhou He, Sushil Adhikari, Yaniv Olshansky, Farshad Feyzbar, Leonard C. Davis, Tae-Sik Oh, Dengjun Wang
Summary: Biochar is a cost-effective solution for removing per- and polyfluoroalkyl substances (PFAS) from water, but the specific physicochemical properties of biochars that determine their PFAS removal remain unknown. In this study, 15 biochars were produced from five feedstocks at three pyrolysis temperatures to investigate their removal efficiency of perfluorooctane sulfonate (PFOS), a type of PFAS, from water. It was found that biochar pore diameter was the most critical factor for PFOS removal, but other factors such as pore diameter/pore volume ratio, specific surface area, pyrolysis temperature, hydrophobicity, and elemental composition also played roles. Biochars with small pore diameter, low nitrogen content, and high pyrolysis temperature showed enhanced PFOS sorption. These findings contribute to the understanding of using biochars with optimized properties to remove PFAS compounds from water.
Article
Chemistry, Physical
Kamal Ahammed, Seyed Morteza Taghavi Kouzehkanan, Tae-Sik Oh, Qiang Huang
Summary: The effects of stress and strain on the superconducting transition behavior of electrodeposited Re film were investigated using sandwich structures. Thin Re layers were deposited between thicker metal layers with different coefficients of thermal expansion (CTE), such as Cr and Cu. The electrodeposited films in the stacks were characterized using various techniques and exhibited different superconducting transition and recrystallization behaviors depending on the CTE of the metals.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Emanuela Mastronardo, Xin Qian, Juan M. Coronado, Sossina M. Haile
Summary: Effective energy storage is crucial for the successful commercialization of concentrating solar power (CSP) plants. Recently, doped CaMnO3 has shown promising thermoelectric storage properties for CSP plants. Co-doping with equal amounts of La and Fe enhances the heat storage capacity and broadens the operating temperature range, making it suitable for CSP plants. This study demonstrates the potential of co-doping to improve the performance of thermal energy storage for CSP applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Shashwat Anand, Michael Y. Toriyama, Chris Wolverton, Sossina M. Haile, G. Jeffrey Snyder
Summary: This article explores the different approaches to studying defects in semiconductors and ionic conductors, highlights the gaps between the two fields, and emphasizes the need for a consistent understanding. The authors compare the methods using a common notation and thermodynamics, and propose a new approach to simplify the description of defect and charge concentrations. The article also discusses the mechanisms of charge compensation in extrinsic doping.
ACCOUNTS OF MATERIALS RESEARCH
(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)
