Article
Chemistry, Physical
Jun Zhou, Yaning Lin, Hongwei Yang, Yong Ren, Fang Xu
Summary: Interest in enhancing magnetic performances of low-sintered ceramic materials by co-doping of oxide nanoparticle and low-melting glass has thrived. Usually this process includes performance enhancement of ceramic attributed to grain growth and deterioration caused by excess additives.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zeljko Rapljenovic, Nikolina Novosel, Damir Dominko, Virna Kisicek, David Rivas Gongora, Duro Drobac, Mladen Prester, Denis Vinnik, Liudmila N. Alyabyeva, Boris P. Gorshunov, Tomislav Ivek
Summary: This study presents the frequency-dependent magnetic susceptibility and dc electric transport properties of three different compositions of hexaferrite Ba1-xPbxFe12-yAlyO19 single crystals. The correlation between the activation energies of the dc electric transport and the ac magnetic susceptibility is found to persist over the entire studied range of aluminum substitution y = 0-3.3, pointing toward a general relaxation mechanism in ferrimagnetic semiconductors that directly affects the dynamic magnetic properties via electrical transport.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hongwei Yang, Meijun Guo, Fang Xu, Yulong Liao, Yong Ren, Guixiang Liu, Honglan Lai, Bochengwen Sun, Bo Dai
Summary: In this study, the effects of adding nano-LiZn ferrite and V2O5 particles to LiZnTi ferrite were investigated. The addition of nano-LiZn led to a change in the microstructure, with the grains becoming more uniform and dense. The saturation magnetization (Ms) increased with increasing LiZn content and the addition of 4.0 wt.% nano-LiZn and 0.60 wt.% V2O5 resulted in improved magnetic properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Vitalii Turchenko, A. S. Bondyakov, Sergei Trukhanov, Ignasi Fina, V. V. Korovushkin, Maria Balasoiu, Silviu Polosan, Bernat Bozzo, Nicoleta Lupu, Alex Trukhanov
Summary: The microscopic mechanism of ferroelectric properties in M-type barium hexaferrites is investigated using experimental and first-principle computation methods. The correlation between thermal factors in sample annealing process and functional properties is confirmed through magnetic, X-ray, and Mossbauer measurements. The occurrence of remnant polarization in barium hexaferrites at room temperature contradicts the description of their crystal structure, suggesting a direct relationship between remnant polarization and broken spatial-inversion symmetry.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
D. H. Kim, H. Y. Hong, K. Park
Summary: By co-doping with Ca2+ and Ba2+, the electrical conductivity of BiCuSeO is significantly increased while the phonon thermal conductivity is reduced. This combination leads to a significant improvement in thermoelectric performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Muhammad Nadeem, Hasan M. Khan, Saeed Ahmad Buzdar, Javed Ahmed, Mohammed A. Assiri, Muhammad Imran, Mohammad Ehsan Mazhar, Mehrun Nisa, Mohammad Ehsan Raza, Benish Raza, Mohammad Jamshed
Summary: A series of nanocrystalline Ca-Ba-Co-based Y-type hexaferrite materials were successfully prepared using sol-gel autocombustion technique, and their structural and magnetic characteristics were analyzed. The results show that increasing dopant concentration leads to a decrease in dielectric parameters, while the prepared samples exhibit good saturation magnetization and coercivity, making them suitable for high-frequency applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Wided Hizi, Malek Gassoumi, Hedi Rahmouni, Ahlem Guesmi, Naoufel Ben Hamadi, Essebti Dhahri
Summary: The electrical characterization of a La0.9Sr0.1MnO3 compound sintered at different temperatures was investigated. The study revealed that the transport properties of the compound are governed by non-small-polaron-tunneling and correlated-barrier-hopping mechanisms. The thermal activation of the conduction process in the system was also confirmed. Additionally, the electrical conductivity was significantly enhanced when a DC bias was applied at room temperature.
Article
Materials Science, Ceramics
Guangyu Dong, W. Li
Summary: Co-doped Al2O3 ceramics with Cu/Ti/Mg can effectively reduce the sintering temperature and achieve high density and uniform microstructure at 1150 degrees C, but higher temperature may lead to abnormal grain growth.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Venkat Swamy, Shu Mi, Haoliang Huang, Chenguang Mei, Yalin Lu, Dongsheng Song, Haifeng Du, Yonggang Zhao
Summary: Reduction of oxygen content in yttrium-iron-garnet (YIG) thin films leads to changes in structural, magnetic, and electrical transport properties, including decreased saturation magnetization and lattice parameter, significantly reduced electrical resistivity, and exploration of low-temperature electrical transport properties for the first time. The properties of YIG with heavily reduced oxygen contents show dramatic changes, indicating the potential for tuning other materials with oxygen content.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
C. Ji, T. Fan, G. Chen, X. Bai, J. Wang, J. He, W. Cai, R. Gao, X. Deng, Z. Wang, X. Lei, C. Fu
Summary: The study showed that microwave sintering method can effectively decrease the grain size and enhance the compactness of BFO-BTO ceramics, while the introduction of BTO can strengthen its dielectric relaxation behavior.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Physical
A. Trukhanov, V. A. Turchenko, V. G. Kostishin, F. Damay, F. Porcher, N. Lupu, B. Bozzo, I Fina, S. Polosan, M. Silibin, M. M. Salem, D. Tishkevich, S. Trukhanov
Summary: The local crystal/magnetic structures of SrFe12-xInxO19 solid solutions were investigated using neutron powder diffraction, revealing the presence of ferroelectric and ferromagnetic ordering. The existence of a nonzero dipole moment in SrFe12-xInxO19 hexaferrites remains controversial, with a possible connection to unequal distortions of neighbor oxygen polyhedra. The formation of the nonzero dipole moment in In-substituted SrFe12-xInxO19 hexaferrites was described based on neutron diffraction data.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
F. F. Alharbi, Salma Aman, Naseeb Ahmad, Syeda Rabia Ejaz, Rabia Yasmin Khosa, Sajid Abbas, Abdul Ghafoor Abid, M. S. Al-Buriahi, Z. A. Alrowaili, Muhammad Suleman Waheed
Summary: In this study, Eu3+ and Co2+ doped Sr-hexaferrite were fabricated using a normal micro-emulsion process, and their magnetic and crystalline properties were investigated. The results showed that increasing the concentration of Eu-Co can enhance the magnetization and resistivity of the material, while reducing coercivity and loss, suggesting the potential commercial application of these materials in microwave devices and recording media.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Physics, Multidisciplinary
Muhammad Zahid, Hasan M. Khan, Aziz Ur Rehman, Abdul Waheed, Imran Sadiq, Ehsan Mazhar, Mohammed A. Assiri, Muhammad Imran, Muhammad Inam Ur Rehman, Mujahid Mustaqeem
Summary: In this study, chromium-doped M-type hexaferrites were prepared using sol-gel auto-combustion technique and characterized using XRD and SEM. The results showed that lattice parameters, crystallite size, and cell volume decreased with increasing Cr3+ concentration, while dielectric constant increased gradually. These samples are suitable for high frequency applications.
Article
Materials Science, Ceramics
D. A. Vinnik, A. Yu Starikov, V. E. Zhivulin, K. A. Astapovich, V. A. Turchenko, T. Zubar, S. Trukhanov, J. Kohout, T. Kmjec, O. Yakovenko, L. Matzui, A. S. B. Sombra, D. Zhou, R. B. Jotania, C. Singh, A. Trukhanov
Summary: In this study, BaFe12-xTixO19 barium hexaferrites with different titanium concentrations were synthesized, and their magnetic and electrical parameters were investigated. The SEM investigation showed that the samples were ceramics, and crystal structure refinement was realized. The magnetic and electrical properties varied with temperature and doping concentration.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Ruyi Han, Huimin Cao, Bo Li
Summary: The addition of H3BO3 to Ca2V2O7 ceramics significantly affects the microstructure, sintering mechanism, and microwave dielectric properties, resulting in reduced sintering temperature and improved performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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)