Article
Chemistry, Analytical
Ion Stiharu, Sergey Andronenko, Almaz Zinnatullin, Farit Vagizov
Summary: Polymer-derived SiCNFe ceramics have potential as soft magnets in MEMS magnetic applications. The composition of SiCNFe ceramics is crucial for the microfabrication of magnetic MEMS devices. Mossbauer spectrum analysis reveals the formation of various Fe-containing magnetic nanoparticles in SiCNFe ceramics, indicating the incomplete pyrolysis process and the complex composition of the ceramic composite.
Article
Materials Science, Multidisciplinary
D. Garzon, J. E. Diosa, C. Ostos, F. H. Sanchez, G. A. Munoz Medina, F. Sieves, O. Arnache
Summary: (Fe30Cu70)(96)B-4 (FCB) alloys were prepared by mechanical milling and characterized for structural, morphological, and magnetic properties with increasing milling time. The nanoparticles formed after 12 hours of milling exhibit superparamagnetic-like behavior at temperatures below 60 K despite being ferromagnetic at room temperature. The saturation magnetization and coercive field values change with milling time.
MATERIALS CHARACTERIZATION
(2021)
Article
Biochemistry & Molecular Biology
Joana C. Pieretti, Jordan Beurton, Julian Munevar, Luiz C. C. M. Nagamine, Alain Le Faou, Amedea B. Seabra, Igor Clarot, Ariane Boudier
Summary: In this study, a hybrid magnetic nanostructure was synthesized and its structural properties and interactions were investigated, demonstrating a correlation between the structural properties of complex hybrid NPs and their interaction with albumin. Surface properties were found to play a key role at the NP-biological interface.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
N. A. Zhuk, V. P. Lutoev, A. Yu Lysyuk, B. A. Makeev, V. A. Belyy, S. Nekipelov, V. N. Sivkov, A. Koroleva, M. G. Krzhizhanovskaya, D. S. Beznosikov
Summary: The study investigated the structural properties of iron-doped solid solutions, showing that iron mainly substituted the positions of titanium, sometimes copper. The doping of iron had almost no effect on the electronic state and polyhedral environment. Antiferromagnetic exchange and ferromagnetic exchange were observed in the solid solutions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Biochemistry & Molecular Biology
Tatyana G. Khonina, Alexander M. M. Demin, Denis S. S. Tishin, Alexander Yu. Germov, Mikhail A. A. Uimin, Alexander V. V. Mekhaev, Artem S. S. Minin, Maxim S. S. Karabanalov, Alexey A. A. Mysik, Ekaterina A. A. Bogdanova, Victor P. P. Krasnov
Summary: Novel magnetic nanocomposite materials based on Fe3O4 nanoparticles coated with iron and silica glycerolates were synthesized and characterized. These materials exhibited high magnetization values and strong magnetic response to alternating magnetic field, and the silica glycerolates shell could undergo hydrolysis in aqueous media. Additionally, the materials showed no cytotoxicity in in vitro experiments, suggesting their potential for controlled-release drug delivery.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Analytical
Hyung Joon Kim, Sung Wook Hyun, So Hee Kim, Hyunkyung Choi
Summary: Mn-Zn ferrite nanoparticles for magnetic hyperthermia applications were synthesized using a high temperature thermal decomposition method, with a maximum saturation magnetization of 83.2 emu/g. The results suggest that these synthesized nanoparticles have potential applications in the field of magnetic hyperthermia.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
M. Mieszczynski, K. Recko, B. Kalska-Szostko, W. Olszewski, K. Szymanski, D. Satula
Summary: The phase analysis, site occupancy, and hyperfine fields of Mn1-xCoFexGe alloys (x = 0.01, 0.02, 0.05, 0.10) after annealing were studied using Mössbauer spectroscopy. The compounds were found to have two phases of Ni2In type hexagonal structure and TiNiSi type orthorhombic structure. The lattice parameters and unit cell volume were not significantly affected by the Fe concentration in both phases. The Mössbauer spectra consisted of two doublets from Fe in the hexagonal structure and two broad sextets from Fe in the orthorhombic structure. The induced hyperfine magnetic field in the hexagonal structure was higher for Fe at Mn sites than for Fe at Co sites. The magnetic moments of Fe were found to align along the external magnetic field direction with similar values.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Elena V. Fomenko, Galina V. Akimochkina, Yuriy V. Knyazev, Sergey V. Semenov, Vladimir V. Yumashev, Leonid A. Solovyov, Alexander G. Anshits
Summary: The recycling of hazardous industrial waste into high-tech materials with desired properties is of considerable interest. In this study, dispersed microspheres from class C fly ash were directly sintered without any additive to form high-strength glass-ceramics with magnetic properties. The optimum processing conditions were achieved at a temperature of 1200°C, at which samples with a compressive strength of 100.6 MPa were obtained. The presented results demonstrate promising industrial applications of hazardous PM10 to minimize solid waste pollution.
Article
Chemistry, Multidisciplinary
Ovidiu Crisan, Alina Daniela Crisan, Nirina Randrianantoandro
Summary: A quaternary Fe-Pt-Nb-B alloy with multiple magnetic phases has been fabricated and investigated. The alloy exhibits different magnetic properties at different temperatures. The optimal annealing temperature for good magnetic performance was found to be 700 degrees C.
Article
Chemistry, Physical
Andrei Ivanov, Svetlana I. Volkova, Natalia Maksimova, Konstantin Pokholok, Alexei Kravtsov, Alexei A. Belik, Svetlana M. Posokhova, Igor L. Kalachev, Victor V. Avdeev
Summary: This study aims to prepare a sorbent based on exfoliated graphite with ferrimagnetic maghemite (gamma-Fe2O3) and investigate its structure and functional properties. The experimental results show that exfoliated graphite prepared at 1000°C has a saturation magnetization of 22.7 emu g(-1) and high sorption rate and capacity towards oil and liquid hydrocarbons, while the sorption capacity towards water is ten times lower.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
A. Ibrahim, Y. Arita, A. S. Ali, I. Khan, B. Zhang, M. Razum, L. Pavic, A. Santic, Z. Homonnay, E. Kuzmann, M. Y. Hassaan, J. Wang, S. Kubuki
Summary: Iron-vanadium-phosphate glass and glass ceramics show promise as a cathode material for lithium-ion batteries due to their low cost and non-toxic characteristics. The addition of Fe2O3 improves the local structure and cyclability of the xFe2O3.(60-x)V2O5.40P2O5 glass and glass ceramics, making them a potential active material for high-performance cathodes in LIBs.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Roman A. Khalaniya, Valeriy Yu Verchenko, Alexey Sobolev, Igor A. Presniakov, Zheng Wei, Evgeny Dikarev, Andrei Shevelkov
Summary: Fe6Ge5 exhibits a peculiar two-step antiferromagnetic ordering, with a fraction of iron magnetic moments remaining disordered between the transitions. This behavior arises from the competition between ferromagnetic and antiferromagnetic interactions due to the weakly connected iron framework formed by a large number of both symmetrically and locally distinct iron atoms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Bo Zhang, Qifeng Kuang, Hua Pang, Fashen Li, Liyun Tang, Da Li, Zhiwei Li
Summary: In this work, detailed Fe-57 Mossbauer spectroscopy investigations were conducted on the ((Co0.97Fe0.03)-Fe-57)(4)Nb2O9 compound to study its magnetic structure. It was found that previously reported magnetic structures were not able to satisfactorily describe the low temperature Mossbauer spectra obtained. Therefore, a modulated helicoidal magnetic structure was proposed, along with theoretical calculations, to simulate the entire series of low temperature Mossbauer spectra. The results suggest that the combination of previously reported magnetic structures only approximates the average magnetic structure from the modulated helicoidal model. The proposed modulated non-collinear magnetic structure is anticipated to provide insight into the understanding of the complex magnetoelectric effects observed in this system.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Ceramics
Luis Eiselt, Robert Kruk, Horst Hahn, Abhishek Sarkar
Summary: High entropy oxides (HEOs) are single-phase oxide solid solutions with compositional flexibility and the potential to tune structural-magneto-electronic properties.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Chemistry, Physical
M. Bouhbou, A. Dzubinska, M. Reiffers, L. Bessais, H. Lemziouka, M. Lassri, V Tuyikeze, F. Fraija, M. Sajeddine, H. Lassri
Summary: Polycrystalline Mg1-xZnxFe2O4 ferrites were prepared using sol-gel method and characterized by XRD, VSM, and Mossbauer spectrometry. The samples showed a single-phase cubic spinel structure and changes in magnetic properties with increasing Zn concentration were observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
A. Jbeli, N. Zeiri, N. Yahyaoui, P. Baser, M. Said
Summary: The electronic and optical properties of CdSe/ZnSe semiconductor core/shell quantum dots with hydrogenic donor impurity were investigated theoretically. The perturbation and variational methods were used to calculate the binding energy, photoionization cross-section, polarizability, and diamagnetic susceptibility of the excited impurity under various conditions. A significant stark shift in the binding energy was observed under the influence of an external electric field.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Rahat Batool, Tariq Mahmood, Sajid Mahmood, Abdul Aziz Bhatti
Summary: This study investigates the effects of alkali metal doping (Na, K, Cs) on MAPbI3 through compositional engineering. The results show that doping Na, K, and Cs can improve the phase stability, thermodynamic stability, and optical absorption of MAPbI3.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
N. A. N. M. Nor, M. A. H. Razali, W. H. A. W. K. Annuar, N. N. Alam, F. N. Sazman, N. H. M. Zaki, A. S. Kamisan, A. I. Kamisan, M. H. Samat, A. M. M. Ali, O. H. Hassan, B. U. Haq, M. Z. A. Yahya, M. F. M. Taib
Summary: This study investigates the potential of quaternary chalcogenides semiconductors as thin film solar cell absorbers using density functional theory (DFT) and density functional theory plus Hubbard U (DFT + U) approach. The results show that by applying Hubbard U terms, the electronic band gaps can be accurately predicted, providing valuable insights for finding cost-effective new thin film solar cell materials.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Ashwani Kumar, Anuj Kumar, Mohaseen S. Tamboli, Mohd Ubaidullah, J. Jayarubi, S. K. Tripathi
Summary: In this study, lead-based perovskite solar cells are replaced by bismuth-based perovskite cells to overcome their instability and toxicity. CsBi3I10 perovskite films are fabricated using a modified drop-casting process, and the effects of post-annealing temperature on the morphological, structural, and optical properties are investigated. The photovoltaic performance of the cells without a hole transport layer is also quantitatively evaluated.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yang Gao, Shu-Ming Chen, Shuo Cao, Shang-Zhou Zhang, Philippe Djemia, Qing-Miao Hu
Summary: This study investigates the phase stability, elastic modulus, and hardness of ternary nitride Ti1-xAlxN. It is found that the hardness increases with the Al content x. The cubic B1 structure is more stable for x < about 0.75, while the hexagonal structure (B4) is more stable for x > about 0.75. The composition dependent hardness and phase decomposition contribute to the convex shaped hardness curve of Ti1-xAlxN.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Fengqi Wang, Qinyan Ye, Xulin He, Kun Luo, Xiaolong Ran, Xingping Zheng, Cheng Liao, Ru Li
Summary: This report uses rigorous calculations based on density functional theory to study the piezoelectric and elastic properties of wurtzite aluminum nitride (w-AlN) with single- and co-alloying by Hf (or Zr) and Sc. The research finds that the (HfSc)0.375Al0.625N and (ZrSc)0.375Al0.625N with stable wurtzite phase have a large piezoelectric coefficient d33 of 49.18 pC/N and 47.00 pC/N, respectively. However, the piezoelectric voltage constant g33 and electromechanical coupling constant k233 of HfAlN, ZrAlN, HfScAlN, and ZrScAlN are smaller than that of ScAlN, which is attributed to the large dielectric constant epsilon 33 of Hf (or Zr) alloying samples. Furthermore, the calculations of internal parameter u and bond angle alpha elucidate the brittle-to-ductile transformation in alloying w-AlN crystal structure. Electronic structure calculations show that the bandgap decreases almost linearly with the increase of alloying concentration, and the Hf (or Zr) alloying compounds become n-type semiconductors due to the existing high-charge states.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
S. R. Athul, K. Arun, S. Swathi, U. D. Remya, Andrea Dzubinska, Marian Reiffers, Nagalakshmi Ramamoorthi
Summary: The magnetic and magnetocaloric characteristics of Ho6FeSb2 have been studied. The compound exhibits two second-order ferromagnetic transitions, enabling hysteresis-free magnetocaloric effect across a wide temperature range. The alloy has high relative cooling power and magnetoresistance, making it suitable for hysteresis-free magnetocaloric applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Reena Sharma, Neelam Hooda, Ashima Hooda, Satish Khasa
Summary: A polycrystalline double perovskite La2CoMnO6 sample was prepared and its structural, dielectric and magnetic properties were investigated. The sample exhibited complex structures and magnetic behavior, and showed good conductivity and dielectric performance. Its multi-domain magnetic structure suggests its suitability for memory device applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Shubha Dubey, Jisha A. Abraham, Kumud Dubey, Vineet Sahu, Anchit Modi, G. Pagare, N. K. Gaur
Summary: This study investigates the optoelectronic, thermodynamic, thermoelectric, and mechanical stability properties of RhTiP Half Heusler semiconductors. The results show that RhTiP is a non-magnetic material with confirmed mechanical stability. It is found to be an indirect-bandgap semiconductor with a good Seebeck coefficient. This study suggests that RhTiP has promising applications in the thermoelectric and optoelectronic fields.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Xun Xie, Jiong-Ju Hao, Hong-Wei Yang
Summary: This work presents a multilayer film structure that uses optical resonance to prepare highly efficient and saturated red, green, and blue transmittance colors. Numerical simulations and analysis show that the structure can produce R, G, and B colors with a purity comparable to standard RGB colors, while maintaining efficient transmission efficiency and obtaining a rich variety of structural colors. Additionally, a metallic interlayer is introduced to selectively suppress resonances in the short-wavelength region, improving the purity of the red color. The study also investigates the effect of the incidence angle on color purity and transmission efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yueqiang Zhao
Summary: Solubility property is of great interest in chemical, physical, pharmaceutical, material, and environmental sciences. Understanding the intrinsic reason behind solubility behavior is a fascinating task. The theoretical relation between binary mutual solubility and liquid-liquid interfacial tension has been derived, where the partitioning of solute molecules between two coexisting liquid phases is determined by the transfer free energy per unit segment for a chain-like solute molecule expressed in terms of solute-solvent interfacial tension. This general theory of solubility is in good agreement with experimental results for binary mutual solubility and molar transfer free energy of solute molecules.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
O. Stognei, A. Berezutskii, I. Anisimov, A. Deryabin
Summary: The influence of ZrOn matrix stoichiometry on the electrical and magnetoresistive properties of Fe-Zr-O nanocomposites has been studied. It was found that the magnetoresistive effect is not observed in composites with oxygen lack, while composites with oxygen excess show magnetoresistive effect and increased resistivity. Magnetoresistivity in composites with oxygen lack only appears after heat treatment. These results can be explained by the difference in the density of localized states in the oxide matrix of the composites and the ratio between two types of conductivity.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Mehmet Bayirli, Aykut Ilgaz, Orhan Zeybek
Summary: The present study aims to understand the relationship between impedance characteristics and fractal behaviors. By producing neat and carbon nanotube doped composite specimens, the researchers investigated the electrical properties and surface heteromorphology using Nyquist plots and fractal analysis.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
M. I. Khan, Saddam Hussain, Muhamad Saleem, Fatimah Mohammed Alzahrani, Muhammad Siddique, M. S. Hassan, Allah Ditta Khalid, Munawar Iqbal
Summary: The sol-gel method was used to deposit Ti-doped MAPbBr3 films on FTO-glass substrates with different doping ratios (0%, 4%, and 6%). XRD analysis confirmed the cubic structure of all films, and the 4% Ti-doped film exhibited a large grain size, low band gap energy, and high refractive index. Solar cells fabricated using the 4% Ti-doped MAPbBr3 film showed improved performance in terms of current density, open circuit voltage, fill factor, and efficiency.
PHYSICA B-CONDENSED MATTER
(2024)