Article
Materials Science, Multidisciplinary
Feng Wang, Wei Fu, Chengming Jiang, Junxiao Li, Jijie Huang
Summary: This study deposited (LaFeO3)(x):(La0.7Ca0.3MnO3)(1-x) composite thin films via pulsed laser deposition (PLD) and investigated the exchange bias effect. LaFeO3 is an antiferromagnet while La0.7Ca0.3MnO3 is a ferromagnet, resulting in exchange bias interfacial coupling at the FM/AFM interface. The composition variation in the composite system could tune the exchange bias field (H-EB).
Article
Chemistry, Physical
Fanghua Tian, Yebei Li, Qizhong Zhao, Minxia Fang, Rui Zhang, Zhiyong Dai, Zhonghai Yu, Xiaoqin Ke, Yin Zhang, Chao Zhou, Sen Yang
Summary: Crystallized core-shell Co@CoO nanocluster assembled thin films with different thicknesses were prepared by magnetron sputtering, and a large zero-field-cooled exchange bias of around 1280 Oe was obtained. The ZEB effect can be tuned by the varying film thickness, with weaker or disappearing ZEB when the film thickness is decreased or increased, respectively. This simple control of film thickness can benefit the applications of these thin films in the magnetic industry.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Yoonho Ahn, Jong Yeog Son
Summary: We investigate the ferromagnetic properties of conducting filament nanodots formed on epitaxial BiFeO3 thin film and provide new insights for the design of multistate memory cells with resistive switching and magnetic spin ordering.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Jijie Huang, Di Zhang, Juncheng Liu, Hongyi Dou, Haiyan Wang
Summary: Exchange bias (EB) is the interfacial coupling effect between ferromagnetic (FM) and antiferromagnetic (AFM) phases, which can be applied for high-density data storage and magnetic recording. A new 3D nanocomposite structure has been designed to tailor the EB effect along both horizontal and perpendicular directions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
M. Perzanowski, O. Polit, J. Chojenka, W. Sas, A. Zarzycki, M. Marszalek
Summary: In this study, the effect of laser interference patterning on the magnetic properties of Pd/CoO/Co/Pd multilayers was investigated. It was found that laser treatment caused magnetic softening of the structure edges while the centers exhibited the exchange bias effect. The study focused on the shape and configurational magnetic anisotropies induced by patterning and showed that the magnetic properties varied depending on the angle of the external magnetic field.
Article
Physics, Applied
Yechao Ling, Yong Hu, Xiaodan Chi, Jiawei Chen, Haobo Wang, Ben Niu, Di Wu, Mingxiang Xu, Zhida Han, Jun Du, Qingyu Xu
Summary: Heusler alloys exhibit anisotropic magnetostructural transitions under epitaxial strain, showing different magnetic behaviors in different orientations. This study demonstrates the influence of substrate on the magnetic properties of Heusler alloys and provides insights for designing novel magnetic devices.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Sadhana Singh, Avinash G. Khanderao, Mukul Gupta, Ilya Sergeev, H. C. Wille, Kai Schlage, Marcus Herlitschke, Dileep Kumar
Summary: The origin of exchange bias (EB) in orthogonal magnetic anisotropic systems is studied by investigating the magnetization reversal of a soft ferromagnetic Fe layer coupled to a [Co/Pt](ML) multilayer with perpendicular magnetic anisotropy (PMA). The study reveals that the exchange coupling at the [Co/Pt](ML) and Fe interface leads to a considerable shift in the Fe layer hysteresis loop and an unusual increase in coercivity, similar to EB phenomena. The analysis using magneto-optical Kerr effect (MOKE) and isotope selective grazing incident nuclear resonance scattering (GINRS) technique further reveals a unidirectional pinning of the Fe layer due to the net in-plane magnetic spin at the interface caused by magnetic field annealing.
Article
Materials Science, Multidisciplinary
Jijie Huang, Di Zhang, Juncheng Liu, Haiyan Wang
Summary: Freestanding nanocomposite thin film has been obtained using a water-soluble sacrificial buffer layer method and can be transferred to other substrates, such as flexible substrates.
MATERIALS RESEARCH LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Mohamed Salaheldeen, Ayman Nafady, Ahmed M. Abu-Dief, Rosario Diaz Crespo, Maria Paz Fernandez-Garcia, Juan Pedro Andres, Ricardo Lopez Anton, Jesus A. Blanco, Pablo Alvarez-Alonso
Summary: The interest in magnetic nanostructures with perpendicular magnetic anisotropy and exchange bias has grown due to their potential applications in spintronic devices. In this study, a nanofabrication process was used to induce a significant out-of-plane component of the magnetic easy axis and exchange bias in CoO/Co multilayers deposited on nanostructured alumina templates. The increase in exchange bias and coercivity in the nanostructured films compared to non-patterned films indicates a change in magnetic anisotropy from in-plane to out-of-plane.
Article
Chemistry, Physical
Chenlin Wang, MinJu Ying, Jie Lian, MingYang Wei, Qingfen Jiang, Zhen Xu, Yu Zhang, Yueming Wang
Summary: In this work, ion implantation of Mn and As ions into ZnO films significantly altered their optical properties, leading to changes in refractive index and extinction coefficient. The presence of Mn ions also introduced a halfmetallic property to the ZnO films, resulting in gentler variations in optical characteristics. These findings suggest new possibilities for the design and optimization of optoelectronic devices utilizing ZnO thin films with semi-metallic properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mateusz Kowacz, Blazej Anastaziak, Marek Schmidt, Feliks Stobiecki, Piotr Kuswik
Summary: The ability to induce and control perpendicular magnetic anisotropy (PMA) in ferromagnetic layers has been widely studied. The investigation extends to antiferromagnetic oxides (AFOs) due to their potential in applied spintronics. The study demonstrates that surrounding a Co layer with two NiO layers significantly boosts coercive and exchange bias (EB) fields, leading to strong PMA in an out-of-plane magnetized system.
Article
Physics, Applied
Jiafeng Feng, H. X. Wei, Yong Ren, Xinxi Li, X. F. Han
Summary: This study investigates the magnetoresistance (MR) effect and magnetic properties in (Co/Pt)(4)/Co/IrMn (SFM) and (Co/Pt)(4)/Co/IrMn/(Co/Pt)(2)/Co (DFM) structures. The research finds that the thickness of the IrMn layer has different effects on the antiferromagnetic and MR properties for these two structures. The DFM structure exhibits suppressed antiferromagnetic property and enhanced MR.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Di Wang, Bin He, Jinrui Guo, Nana Zhang, Chaoqun Shi, Yue Han, Qixiang Wang, Hong Fang, Jie Wang, Peng Zhang, Yanan Chen, Miaojuan Ren, Changwen Zhang, Weiming Lu
Summary: This study systematically investigates the electric transport and magnetic properties of LaMnO3 films, revealing the influence of stoichiometry offset on their magnetic ground states, and observing phenomena such as exchange bias. The results demonstrate that the regulable magnetic coupling of Mn3+/Mn4+ and magnetic phase separation play significant roles in these phenomena.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physics, Applied
D. M. Polishchuk, T. Polek, V. Yu Borynskyi, A. F. Kravets, A. Tovstolytkin, V Korenivski
Summary: The exchange biasing in ferromagnet/antiferromagnet bilayers can enhance the ferromagnetic resonance frequency and eliminate the angle dependence, showing the potential for high-speed spintronic applications.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Maral Ghoshani, Morteza Mozaffari, Mehmet Acet, Mahshid Hosseini, Daryoosh Vashaee
Summary: In this study, the enhancement of exchange bias in core/shell/shell structures is investigated by synthesizing single inverted core/shell and core/shell/shell nanostructures. The magnetic properties of the structures are evaluated and the effect of shell thickness on the exchange bias is studied. Extra exchange coupling at the shell-shell interface leads to a significant increase in the coercivity and strength of the exchange bias. The strongest exchange bias is achieved for the sample with the thinnest outer shell and a nonmonotonic behavior is observed as the shell thickness increases.
Article
Polymer Science
Jitendra Tripathi, Anupam Sharma, Shilpa Tripathi, Kallol Kumar Das
MACROMOLECULAR RESEARCH
(2016)
Article
Materials Science, Multidisciplinary
J. Tripathi, A. Sharma, S. Tripathi, R. Bisen, A. Agrawal
MATERIALS CHEMISTRY AND PHYSICS
(2017)
Article
Physics, Condensed Matter
A. Sharma, J. Tripathi, K. C. Ugochukwu, S. Tripathi
SOLID STATE COMMUNICATIONS
(2017)
Article
Materials Science, Multidisciplinary
Yogesh Kumar, J. Tripathi, S. Tripathi, D. Kumar, R. Bisen, K. C. Ugochukwu, A. Sharma
Article
Materials Science, Multidisciplinary
R. Bisen, J. Tripathi, A. Sharma, Ayush Khare, Yogesh Kumar, S. Tripathi
Article
Physics, Condensed Matter
A. Sharma, J. Tripathi, S. Tripathi, K. C. Ugochukwu
PHYSICA B-CONDENSED MATTER
(2019)
Article
Materials Science, Multidisciplinary
A. Sharma, J. Tripathi, S. Tripathi, Yogesh Kumar, K. C. Ugochukwu, D. Kumar, M. Gupta, R. J. Chaudhary
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
K. C. Ugochukwu, M. M. Sadiq, E. Biegel, L. Meagher, M. R. Hill, K. G. Sandeman, A. Haydon, K. Suzuki
Article
Chemistry, Physical
Jitendra Tripathi, Anupam Sharma, Dileep Kumar, Jaiveer Singh, Rishabh Bisen, Shilpa Tripathi
Summary: The superparamagnetic to ferromagnetic transition in ultrathin Co layers was investigated, along with the annealing-induced modifications in morphological and structural properties. Results showed a clusterization of Co beyond 200 degrees C due to annealing, indicating a transition from superparamagnetic to ferromagnetic phase.
SURFACE AND INTERFACE ANALYSIS
(2021)
Proceedings Paper
Physics, Applied
A. Sharma, S. Tripathi, J. Tripathi
DAE SOLID STATE PHYSICS SYMPOSIUM 2015
(2016)
Proceedings Paper
Physics, Applied
J. Tripathi, S. Tripathi, R. Bisen, A. Sharma, A. Choudhary, T. Shripathi
DAE SOLID STATE PHYSICS SYMPOSIUM 2015
(2016)
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)