Article
Physics, Condensed Matter
Hem Raj Sharma, Khalid Mujasam Batoo, R. Neffati, Pooja Dhiman, Sumit Bhardwaj, Pankaj Sharma, Sajjad Hussain, Indu Sharma, Rahul Goel, Gagan Kumar
Summary: Al-doped Mn ferrite nanoparticles were synthesized by solution combustion method, and the effects of Al3+ ions substitution on the structural, optical, electrical and magnetic properties were investigated. The results showed that Al3+ ion doping influenced the structural parameters, FTIR spectra and magnetic properties of the synthesized samples.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
I. L. Kalentyeva, O. V. Vikhrova, Yu. A. Danilov, M. V. Dorokhin, B. N. Zvonkov, Yu. M. Kuznetsov, A. V. Kudrin, D. V. Khomitsky, A. E. Parafin, P. A. Yunin, D. V. Danilov
Summary: The investigation found that laser annealing has a significant effect on the structural, magnetic, and electrical properties of the thinnest (Ga,Mn)As layer. The activation of Mn impurity, increase in Curie temperature, and dissolution of MnAs clusters were observed in this layer. Model calculations showed that the melting point temperature of MnAs is not achievable throughout the entire layer in thicker layers (under the chosen conditions of pulsed laser annealing).
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Khalid Muajsam Batoo, Muhammad Hadi, Ritesh Verma, Ankush Chauhan, Rajesh Kumar, Mahavir Singh, Omar M. Aldossary
Summary: This study reports the synthesis of Ba-doped Co-Zn ferrite nanoparticles using the sol-gel auto combustion technique. Various analytical methods were used to confirm the structure, chemical purity, and physical properties of the samples. The findings showed changes in crystallite size, lattice parameter, magnetic properties, and EMI shielding effectiveness with increasing dopant concentration.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Zeenat Jabeen, Asadullah Dawood, Muneerah Alomar, Salman Naeem Khan, Ihsan Ali, Muhammad Asif, Waseem Abbas, Muhammad Sultan Irshad, Mukhtar Ahmad
Summary: A series of single-phase nickel-substituted magnesium spinel ferrites were synthesized using the hydrothermal technique, and their morphology, structure, magnetism, and electrochemical properties were investigated. Experimental characterization techniques confirmed the presence of a single-phase spinel structure, with a decrease in lattice parameter and clustering of nanoparticles as nickel concentration increased. Raman and FTIR spectra indicated changes in wave numbers and the shortening of Fe-O bonds. Additionally, the ferrites exhibited increased saturation magnetization, decreased coercivity, decreased specific capacitance, and increased loop size. These ferrites are promising for energy storage applications.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Rentapalli Vijaya Bharathi, M. K. Raju, Susmitha Uppugalla, Vemuri Raghavendra, D. Parajuli, B. Suryanarayana, S. Yonatan Mulushoa, N. Murali, K. Samatha
Summary: Cu2+ substituted Mg0.5Co0.5Fe2O4 ferrite materials were synthesized using a solid-state reaction method, and their structural, magnetic, and electrical properties were studied. The materials were characterized using XRD, SEM, FTIR, VSM, and DC electrical resistivity apparatus. The XRD patterns showed a single cubic phase and a decrease in lattice constant with increasing copper concentration. The SEM images revealed spherical and polyhedral-shaped grains with agglomerations. The FTIR spectra indicated the nature of ferrite. The VSM study showed soft ferromagnetic behavior, and the DC resistivity exhibited a semiconductor nature with increased Cu2+ concentration.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jakub Holovsky, Eva Horynova, Lukas Horak, Katarina Ridzonova, Zdenek Remes, Lucie Landova, Rupendra Kumar Sharma
Summary: Molybdenum oxide is a material with high bandgap, work function, and other interesting properties. Using Pulsed Laser Deposition, researchers were able to deposit high transparency MoO3 layers from stoichiometric MoO3 and metal Mo targets at different temperatures and oxygen pressures. Optical properties were accurately tracked using Photothermal Deflection Spectroscopy and Spectral Ellipsometry, while crystallinity and surface morphology were monitored using X-ray diffraction and Scanning Electron Microscopy. Increasing temperature led to smoother, denser layers, narrowing bandgap, and increased sub-gap absorption, with crystallization occurring above 400 degrees C. Sub-gap absorption around 1000 nm depended on temperature and weakly on oxygen pressure.
Article
Chemistry, Physical
T. Roch, M. Gregor, S. Volkov, M. Caplovicova, L. Satrapinskyy, A. Plecenik
Summary: This study examined the impact of different substrates on the structure and orientation of niobium nitride thin films, revealing that films on C-Al2O3 substrate exhibited the best superconducting properties.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Neetu Dhanda, Sonam Kumari, Rakesh Kumar, Dinesh Kumar, An-Cheng Aidan Sun, Preeti Thakur, Atul Thakur
Summary: Nickel-substituted cobalt ferrite nanoparticles were synthesized and characterized. The nanoparticles exhibited a cubic spinel ferrite structure and their magnetic properties were determined. With the increase in nickel doping concentration, the crystallite size and lattice parameters decreased, and the saturation magnetization, remanence magnetization, and coercivity of the nanoparticles decreased as well. These findings suggest that the prepared nanoparticles can be used for data storage device applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Manuel Haessner, Denis A. Vinnik, Rainer Niewa
Summary: The newly synthesized hexaferrite incorporates Pb2+ into the barium position, while iron and titanium fill octahedrally coordinated interstices in different ratios. Iron solely occupies tetrahedra and trigonal bipyramids. The compound exhibits ferrimagnetic behavior with a Curie temperature of 309.3 degrees C and undergoes a magnetic phase transformation to a ferromagnetic state at high magnetic field strengths and temperatures below -123 degrees C.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Hemant Kumar Dubey, Preeti Lahiri
Summary: Cadmium-substituted manganese ferrite nanoparticles were synthesized using the citrate-gel auto combustion method. The nanoparticles exhibited a cubic phase spinel structure, with elemental composition and magnetic properties characterized by various techniques. The results showed that the nanoparticles displayed ferromagnetic behavior and exhibited unique structural and magnetic properties.
MATERIALS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
V. Sedykh, V. Rusakov, O. Rybchenko, A. Gapochka, K. Gavrilicheva, O. Barkalov, S. Zaitsev, V. Kulakov
Summary: The changes in substituted La0.5Sr0.5FeO3_ & gamma; orthoferrite under vacuum annealing in the temperature range of 200-650°C were investigated using X-ray diffraction, Mössbauer spectroscopy, and Raman spectroscopy. The annealing process resulted in a transition from rhombohedral to cubic structure at 650°C. The presence of oxygen vacancies and Fe4+ ions in the local environment of Fe3+ ions contributed to the variations observed in the Mössbauer spectra.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Alexander W. Auner, Mark A. Burton, Lauren A. Nagel, Jonathan C. Crowhurst, David G. Weisz, Kimberly B. Knight
Summary: Different cerium oxides can be formed in high-temperature laser experiments by varying the availability of oxygen and the use of different laser heating methods. X-ray diffraction and Raman spectroscopy suggest the formation of a low structural order Ce2O3/CeO2 mixed structure using pulsed laser ablation in a 1% O2 atmosphere. Crystalline A-type Ce2O3 is formed near the point of laser impingement when using continuous wave laser heating in a 1% O2 environment. The Raman spectrum of Ce218O3 is reported for the first time through experiments conducted with 18O2.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Physics, Applied
Manish Kumar Bharti, Sonia Chalia, Preeti Thakur, Atul Thakur
Summary: Doping lanthanum ions in Mn-Zn-Cd nanoferrites alters the crystal structure, grain size, and magnetic properties, resulting in changes in dielectric constant and permeability.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2021)
Article
Materials Science, Ceramics
Evgeny A. Gorbachev, Vasily A. Lebedev, Ekaterina S. Kozlyakova, Liudmila N. Alyabyeva, Asmaa Ahmed, Antonio Cervellino, Lev A. Trusov
Summary: Double substitution of strontium hexaferrite by calcium and aluminum greatly enhances its hard magnetic properties, but these properties are also closely related to the material microstructure, solid solution inhomogeneity, and aluminum ions distribution. In this study, M-type hexaferrite particles with varying aluminum content were synthesized through a simple method and the effects of annealing temperature on microstructure, crystal structure features, and hard magnetic properties were investigated. The annealing temperature influenced the particle size, chemical composition, and coercivity. The hexaferrites with narrow chemical distribution exhibited resonance absorption in the sub-terahertz band, with the highest NFMR frequency observed at x = 5.5 sample annealed at 1400°C.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
J. Antonowicz, P. Zalden, K. Sokolowski-Tinten, K. Georgarakis, R. Minikayev, A. Pietnoczka, F. Bertram, M. Chaika, M. Chojnacki, P. Dluzewski, K. Fronc, A. L. Greer, C. Jastrznbski, D. Klinger, Ch Lemke, O. M. Magnussen, B. Murphy, K. Perumal, U. Ruett, K. J. Warias, R. Sobierajski
Summary: In this study, ultrafast heating and rapid cooling processes in the devitrification of thin film Cu67Zr33 metallic glass were investigated using ultrashort pulsed laser annealing. X-ray diffraction snapshots were taken during the glass-crystal transformation, revealing the formation of a crystalline ZrO2 layer and the nucleation and growth of fcc-Cu in the amorphous matrix. At low annealing temperatures, the devitrification kinetics of ZrO2 and Cu are correlated, while at high temperatures ZrO2 forms much faster than Cu.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Bibhutibhusan Nayak, S. Narayana Jammalamadaka
Summary: This article presents a method for remote detection of bovine serum albumin (BSA) using modified cantilever beam magnetometry (CBM). By combining a magnetostrictive Fe70Ga30 cantilever with optical detection technique, researchers were able to detect high concentrations of BSA remotely. The results of this study demonstrate the potential of this method in estimating the magnetostriction of thin films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yu Hao, R. E. Camley, Z. Celinski
Summary: Magnetic particles have various applications and their magnetic state is determined by their size and the strength of an applied magnetic field. Numerical simulations were performed to study the effect of an applied field on the critical size of single-domain magnetic particles, and the critical field at which a particle becomes single-domain was determined.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Nitesh Singh, Naresh Kumar, Dharohar Sahadot, Anil Annadi, Vidyadhar Singh, Murtaza Bohra
Summary: The unique magnetic properties of FM/AFM and hard-FM/soft-FM nanocomposite thin films have significant relevance for numerous applications. The composition and performance of different magnetic phases in the nanocomposite films can be significantly affected by the laser ablation conditions and annealing temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alya Ali Musaed, Samir Salem Al-Bawri, Khaled Aljaloud, Wazie M. Abdulkawi, Mohammad Tariqul Islam, Mandeep Jit Singh, Zaini Sakawi, Husam Hamid Ibrahim
Summary: This research presents a wideband tunable metamaterial for body-centric applications in the millimeter-wave frequency band. The proposed metamaterial has a wide operating frequency range and enhanced gain, making it suitable for improving the antenna performance in 5G wireless communication systems.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Binod K. Rai, Boris Maiorov, Krzysztof Gofryk, Patrick O'Rourke, Catherine Housley, Henry Ajo, Asraf Sawon, Arjun K. Pathak, Narayan Poudel, Qiang Zhang, Travis J. Williams, Matthias Frontzek
Summary: This manuscript reports on the structural and magnetic properties of NdCuGa3. The study confirmed the crystal structure and magnetic phase transition of NdCuGa3 using XRD, neutron diffraction, magnetization, and specific heat measurements. The neutron diffraction data further confirmed the antiferromagnetic phase of NdCuGa3.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Haonan Li, Cong Li, Hailiang Huang, Guodong Hao, Fei Wang
Summary: The electronic structure and ferroelectric-ferromagnetic coupling properties of Y-doped and vacancy-containing GaN-ZnO heterojunctions are systematically investigated. The magnetism in vacancy-containing systems is generated by the spin polarization of unpaired electrons induced by cationic vacancies, while in Y-doped systems, bound magnetic polarons are formed by the orbital hybridization of s-state and d-state electrons of Y-doped elements.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Muhammad Ijaz, Hafeez Ullah, Bandar Ali Al-Asbahi, Mati Ullah Khan, Zaheer Abbas, Sana Ullah Asif
Summary: M-type BaFe11.4-xAlxCo0.6O19 hexaferrites with Al3+ substitutions were synthesized using the co-precipitation method followed by Sonochemical process. The synthesized materials were characterized using XRD, FTIR, UV-vis spectroscopy, VSM, SEM, and LCR meter. The results showed that aluminum doping decreased the band gap and enhanced the magnetic and dielectric properties of the hexaferrites, making them suitable for various applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg I. Utesov
Summary: The elementary excitations spectrum of anisotropic frustrated antiferromagnets in the fan phase is discussed. It is found that the low-energy part of the spectrum consists of a gapless phason branch with linear dispersion and a gapped optical branch corresponding to the fan structure amplitude oscillations. In the high-energy part of the spectrum, the excitations are similar to the magnons of the fully polarized phase.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alexander Ya. Simonovskii, Alexander A. Yanovskii, Arthur R. Zakinyan
Summary: In this study, the departure frequency of vapor bubbles during boiling of ferrofluid in a horizontal magnetic field is experimentally investigated. Two methods, visual and inductive, are used to measure the frequency of bubble departure. The results show that the bubble departure frequency can decrease with increasing magnetic field strength and increase with increasing temperature of the heat-emitting surface. A linear stability analysis is conducted to analyze the influence of the magnetic field on the frequency of bubble formation during ferrofluid boiling.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg Heczko, Michal Rames, Vit Kopecky, Petr Vertat, Michal Varga, Ladislav Straka
Summary: Heusler Ni-Mn-Ga alloys are multiferroic materials that exhibit magnetic shape memory (MSM) phenomena. By doping transition elements into Ni2MnGa alloys, the transformation temperatures can be modified and complex behaviors can be observed, such as the variation in saturation magnetization and the effects of elemental substitution on compound properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Carlos Ariel Samudio Perez, Ariel Flaig de Marchi
Summary: This study investigates the electronic and magnetic properties of the Full-Heusler Fe2MnAs alloy using first-principles calculations. The alloy may form spontaneously and exhibits a ferromagnetic order and high spin-polarization. It can be transformed into a half-metal by contracting the lattice constant. Additionally, certain defects contribute to the spin-polarization of the alloy, making it a fully half-metallic material.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Satish Geeri, Aditya Kolakoti, Prasadarao Bobbili
Summary: In this study, an electromagnetic wave-absorbing material was fabricated using a polymer composite material with fiber orientation and Multiwall Carbon Nanotubes as filler materials, along with a Perfect Electric Conducting material. The experiments demonstrated strong electromagnetic absorbing properties for the composites with PEC-coated and non-PEC-coated materials. Mechanical, thermal, and morphological analysis confirmed the similar trend in properties. CRITIC analysis helped identify the sequence order of sustaining properties for the fabricated composites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yankai Chen, Ruoxue Zhang, Yukai An
Summary: The piezoelectricity, valley character, and magnetic properties of 2H-VS2 monolayer were studied, revealing its potential applications in spintronics and valleytronics due to its bipolar magnetic semiconductor characteristics and superior physical properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Leonardo S. Lima
Summary: This study investigates the thermodynamic quantities, such as entropy, specific heat, and magnetic susceptibility, in the next-nearest-neighbors Heisenberg model on a honeycomb-kagome lattice. The linear spin-wave approach is applied to obtain the temperature-dependent behavior of these quantities. Additionally, the entanglement negativity, a quantifier of quantum entanglement, and the spin Hall conductivity are also studied. The results show that all the thermodynamic quantities, as well as the entanglement negativity and spin Hall conductivity, exhibit an increasing trend with temperature. Furthermore, it is found that all the analyzed quantities approach zero in the low-temperature limit, consistent with experimental observations.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxing Wang, Maximilian Kai Reimann, Wang Chen, Yikun Zhang, Rainer Poettgen
Summary: The Mo2FeB2-type compounds RE2Ga2Mg (RE = Tm, Er, Ho) exhibit a large magnetocaloric effect, making them promising for cryogenic magnetic cooling applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)