Article
Physics, Applied
Yulin Feng, Zilong Wang, Xi Zuo, Guoying Gao
Summary: In this study, the electronic structure, magnetism, and spin transport properties of VSi2X4 (X = N, P, As) monolayers were systematically studied using density functional theory. The results showed that VSi2X4 monolayers exhibit ferromagnetic type-II spin gapless semiconductor (SGS) and bipolar magnetic semiconductor (BMS) properties, and interesting electronic phase transitions can be achieved by applying biaxial strain. Additionally, the VSi2P4 monolayer demonstrated bias-dependent spin filtering effect and temperature-driven spin Seebeck effect.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Condensed Matter
Y. Belaiche, K. Minaoui, M. Ouadou, M. Elansary, C. Ahmani Ferdi
Summary: ZnFe2-x-yGdxSmyO4 ferrite nanoparticles with an average size of 5 nm were successfully synthesized by co-precipitation method, exhibiting a high crystallinity single-phase spinel structure. Magnetic properties analysis revealed superparamagnetic behavior at high temperatures, indicating potential value for industrial applications.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Physics, Applied
Xinlu Li, Meng Zhu, Yaoyuan Wang, Fanxing Zheng, Jianting Dong, Ye Zhou, Long You, Jia Zhang
Summary: Recently, the research on van der Waals magnetic heterostructures in spintronics has increased. However, the lack of room-temperature magnetic order in vdW materials has hindered their practical development in spintronic devices. Inspired by the discovery of vdW ferromagnet Fe3GaTe2, which exhibits magnetic order above room temperature and significant perpendicular magnetic anisotropy, the electronic structure, magnetic properties, and tunneling magnetoresistance effect in magnetic tunnel junctions (MTJs) with Fe3GaTe2/insulator/Fe3GaTe2 structure were investigated using first-principles calculations. The results show that Fe3GaTe2-based MTJs have a prominent tunneling magnetoresistance effect at room temperature, comparable to conventional AlOx and MgO-based MTJs. This suggests that Fe3GaTe2-based MTJs could be a promising candidate for realizing long-awaited full magnetic vdW spintronic devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Hecheng Han, Jiaqi Wang, Chunyan Xu, Qiushi Wang, Huiling Zheng
Summary: In this study, Gd-doped AlN hierarchical microstructures were synthesized and analyzed, confirming the doping of Gd ions and the magnetic behavior of AlN:Gd. The results indicate that AlN:Gd hierarchical microstructures hold promising potential for spintronic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Quantum Science & Technology
Yingdan Xu, Xuefei Han, Yin Xiao, Yong Wang, Wenbo Mi
Summary: This study investigates the spin-dependent electronic transport of chiral amino acids through a magnetic tunnel junction model, revealing the spin polarized photocurrent selectivity and chiral-induced spin selectivity effect under polarized light. The findings provide a theoretical foundation for the applications of chiral molecules in life science and bioelectronic devices.
ADVANCED QUANTUM TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Rajwali Khan, Ihab Shigidi, Sattam Al Otaibi, Khaled Althubeiti, Sherzod Shukhratovich Abdullaev, Nasir Rahman, Mohammad Sohail, Alamzeb Khan, Shahid Iqbal, Tommaso Del Rosso, Quaid Zaman, Aurangzeb Khan
Summary: In this study, the co-precipitation approach was used to synthesize ZnO, Zn0.96Gd0.04O, and Zn0.96-xGd0.04CoxO nanotubes. The effects of gadolinium and cobalt doping on the microstructure, morphology, and optical characteristics of ZnO were investigated. It was found that gadolinium and cobalt doping did not affect the morphology of the nanotubes, but reduced the crystallinity of the samples. The doping also resulted in changes in the optical characteristics and electrical conductivity of the nanotubes.
Article
Physics, Multidisciplinary
Santosh Kumar, Deepika, Raju Kumar, Ritesh Kumar, Pratyush Vaibhav, Rajnish Kumar Singh, Nishant Kumar, Rakesh Kumar Singh, Seema Sharma
Summary: The study synthesized Zn0.90Co0.10O using the two-electrode electrodeposition method and investigated its structural, optical, and magnetic properties. The results confirmed the evolution of a single-phase polycrystalline hcp Wurtzite structure, with Co present in mixed 2+ and 3+ states, and good optical properties indicating potential for UV sensor applications. Intrinsic ferromagnetism at room temperature was also confirmed by VSM measurement.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
E. K. Petrov, V. N. Men'shov, I. P. Rusinov, M. Hoffmann, A. Ernst, M. M. Otrokov, V. K. Dugaev, T. Menshchikova, E. Chulkov
Summary: This paper suggests a method to realize topologically protected spin-polarized flat bands generated by domain walls in planar magnetic topological insulators, demonstrating their existence near the Fermi level and discussing their potential applications in intrinsic antiferromagnetic topological insulators.
Article
Materials Science, Multidisciplinary
Piotr Chankowski, Jacek Wojtkiewicz
Summary: The effective field theory approach simplifies the perturbative computation of the ground-state energy for diluted gas of repulsively interacting fermions, allowing easy derivation of classic results up to higher orders. The expansion of ground state energy for polarized gas of spin 1/2 fermions is known only up to a certain order and has only been computed with a specific interaction potential. The effective field theory method also provides a way to easily obtain corrections to the ground state of polarized gas applicable to all repulsive interactions.
Article
Materials Science, Multidisciplinary
Katherine Inzani, Nabaraj Pokhrel, Nima Leclerc, Zachary Clemens, Sriram P. Ramkumar, Sinead M. Griffin, Elizabeth A. Nowadnick
Summary: Atomic-scale control of spins by electric fields is highly desirable for future technological applications. Magnetically doped Aurivillius-phase oxides present one route to achieve this, with magnetic ions substituted into the ferroelectric structure at dilute concentrations, resulting in spin-charge coupling. However, there has been minimal exploration of the ferroelectric switching pathways in this materials class, limiting predictions of the influence of an electric field on magnetic spins in the structure.
Article
Materials Science, Multidisciplinary
Hyun Jun Shin, Jin Seok Kim, Jong Hyuk Kim, Jae Yeon Seo, Jae Min Hong, Ki Won Jeong, Kyungsun Moon, Mi Kyung Kim, Nara Lee, Young Jai Choi
Summary: Explorations of vdW antiferromagnets provide new insights into highly anisotropic magnetism and spin-based functional properties. However, the lack of suitable materials hinders spintronic applications at room temperature. In this study, we examined the anisotropic magnetic characteristics of Co-doped Fe5GeTe2 and showed how different spin configurations affect magnetic torques at room temperature, offering a potential magnetic platform for room-temperature spin-processing functionalities.
NPG ASIA MATERIALS
(2023)
Article
Chemistry, Physical
Aquil Ahmad, S. K. Srivastava, A. K. Das
Summary: This study reports the synthesis and physical properties of Co2FeGe Heusler alloy nanoparticles, which show high magnetic performance and stability at high temperatures. The nanoparticles could potentially be candidates for magnetic nano-devices working at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
Jun Miao, Z. L. Lv, J. P. Cao, H. W. Wang, Z. Y. Ren, J. K. Chen, Y. Wu, K. K. Meng, X. G. Xu, Y. Jiang
Summary: Thin films of Bi1.05La0.05FeO3 (BLFO) were deposited on a CaRuO3 buffering layer on SrTiO3 using pulsed laser deposition, followed by in situ sputtering of a Pt thin layer on the surface of BLFO. The magnetoresistance effect was observed at the interface of the Pt/BLFO bilayer, indicating the possibility of manipulating spin-orbit coupling at the interface of a single-phase multiferroic and a heavy metal.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Sintayehu Mekonnen Hailemariam, Akililu Esayas Enna
Summary: The study using density functional theory revealed that V-doped graphene is stable, has an open bandgap, and exhibits ferromagnetism. The calculated ferromagnetic transition temperature for a V concentration of 6.25% is 377 K, indicating potential for enhanced application of graphene in spintronics.
Article
Physics, Multidisciplinary
J. Jesenovec, C. Pansegrau, M. D. McCluskey, J. S. McCloy, T. D. Gustafson, L. E. Halliburton, J. B. Varley
Summary: This study finds that exposure of Cu-doped beta-Ga2O3 to UV light (>4 eV) causes large, persistent photo induced darkening at room temperature. Light exposure converts Cu2+ to Cu3+ and leads to the appearance of O-H vibrational modes. Cu acceptors can form favorable complexes with hydrogen donors, and when these complexes absorb light, hydrogen is released, resulting in the formation of Cu3+ species and O-H modes.
PHYSICAL REVIEW LETTERS
(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)