Article
Nanoscience & Nanotechnology
Zhuhua Mo, Guo Tian, Wenda Yang, Shuai Ning, Caroline A. Ross, Xingsen Gao, Junming Liu
Summary: This study investigates the magnetic domain structures and magnetoelectric coupling in self-assembled BiFeO3-CoFe2O4 (BFO-CFO) nanocomposite thin films, revealing that the nanofins exhibit in-plane magnetization along their length and the piezoresponse of the BFO matrix is influenced by an in-plane hard axis magnetic field. Moreover, magnetic reversal of nanofins can be achieved through the application of an electric field due to strain-induced changes in magnetic anisotropy.
Article
Materials Science, Ceramics
Tahta Amrillah, Le Thi Quynh, Ahmad Taufiq, Jenh-Yih Juang
Summary: The interplay between structure and magnetic couplings is crucial for scientific research and designing functional oxide BiFeO3 (BFO)-CoFe2O4 (CFO) heteroepitaxy. Various substrates have been used to modify the strain state of BFO-CFO and alter the magnetic anisotropy and magnetoelectric coupling. This research investigates the effect of CFO nanopillars' composition ratio on the magnetic properties of BFO-CFO heteroepitaxy and sheds light on the strain and interfacial effect of nanopillars-matrix relationship.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Guiyun Sun, Huan Li, Siqi Zhong, Chen Chen, Keju Ren, Zhixin Zeng, Xiaoling Deng, Rongli Gao, Wei Cai, Chunlin Fu, Gang Chen, Zhenhua Wang, Xiang Lei
Summary: This paper investigated the crystal structure, surface morphology, electrical properties, magnetic properties, photovoltaic properties, as well as magnetic and photoelectric coupling properties of the BFO/CFO composite films. The results showed the influence of composition on these properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Shaffy Garg, Sanjeev Gautam, Jitendra Pal Singh, Mandeep Kaur, Anshu Gupta, Ramcharan Meena, Suvankar Chakraverty, Young Hwa Jung, Navdeep Goyal
Summary: This study focuses on using a single target system for multilayer formation and dissolving impurity phases by swift heavy ion irradiation to improve the in-situ system for metallic multilayer thin films used for magnetic tunnel junction (MTJ), thus reducing the cost.
Article
Chemistry, Physical
Tomasz Suszko, Witold Gulbinski, Karol Zaleski, Grzegorz Greczynski, Jerzy Morgiel, Vasilina Lapitskaya
Summary: Thin films of NiCr-C were deposited by pulse magnetron sputtering, and their structure, chemical composition, and magnetic properties were investigated using various characterization techniques. The results showed that amorphisation and carbon segregation occurred with increasing carbon content. The self-assembly processes during the coating growth led to the formation of nanostructures with metallic columns surrounded by carbon sheaths. The resulting films exhibited weak ferromagnetism parallel to the column axis and superparamagnetism perpendicular to the columns.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Mahyar Fazeli, Juha Lipponen
Summary: Starch nanopartides (SNPs) were synthesized and characterized in terms of chemical structure, crystallinity, and mechanical properties. The results showed that SNPs exhibited differences in these properties compared to conventional starch, and the prepared films had hydrophobic surfaces.
Article
Materials Science, Multidisciplinary
Tung-Ming Pan, Yu-Cheng Chou, Jim-Long Her
Summary: This study fabricated ytterbium-doped BiFeO3 thin films on Pt/Ti/SiO2/Si substrates using a co-sputtering method and investigated the impact of ytterbium content on the structural and electrical properties of the films. Various techniques including X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy were used to analyze the crystal structures, elemental compositions, microstructures, and film morphologies of the thin films. The Yb-doped BiFeO3 thin film prepared under the 11W condition exhibited the lowest leakage current and the highest remnant polarization.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Jan Gutwirth, Magdalena Kotrla, Tomas Halenkovic, Virginie Nazabal, Petr Nemec
Summary: A model for tailoring the chemical composition of thin films via multisource deposition has been developed and experimentally verified for chalcogenide thin films. The model uses physicochemical constants of source materials and shows good agreement with experimentally determined compositions. Despite some simplifications, the proposed model can be generally used for studying the influence of thin film composition on their properties.
Article
Nanoscience & Nanotechnology
Boyce S. Chang, Chen Li, Jinghang Dai, Katherine Evans, Jingyu Huang, Mengdi He, Weili Hu, Zhiting Tian, Ting Xu
Summary: Thermal percolation, the rapid increase in thermal transport in polymer nanocomposites, is of great interest in thermal management. However, it remains a challenging subject in both experimental and modeling aspects. Previous studies on thermal percolation have mainly focused on high-aspect-ratio, conductive fillers. This study demonstrates that thermal percolation can be achieved even with nonconductive spherical fillers at a low volume fraction. Additionally, the effects of volume fraction, interfacial thermal resistance, and filler conductivity on thermal conductivity are found to deviate from effective medium approximations.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Applied
Hongxia Tian, Guoliang Wang, Feng Wang, Chengming Jiang, Jijie Huang
Summary: Integrating functional oxide-based nanocomposite thin films on Si wafer is a significant progress in the field of electronics and spintronics. By using a buffer layer, the lattice mismatch and potential inter-diffusion between complex oxides and Si are effectively overcome, leading to highly textured growth of the nanocomposite films along the c direction. Magnetic measurements reveal a strong ferromagnetic-antiferromagnetic coupling in the nanocomposite system.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Ji Ho Kang, Sangho Han, Deokyeon Lee, Dong Hun Kim
Summary: The growth behavior and magnetic properties of single-layer Fe thin films sputtered at different temperatures were investigated. The deposition temperature had a significant impact on the surface morphologies and magnetic properties of the films. Co-sputtered Fe-SrTiO3 nanocomposite thin films showed different microstructures and magnetic properties depending on the growth conditions. The modulation of magnetic anisotropy by tuning the geometry and composition of metal-metal-oxide nanocomposites offers a promising approach for the design of future multifunctional devices.
Article
Nanoscience & Nanotechnology
Eunsoo Cho, Abinash Kumar, Shuai Ning, James M. LeBeau, Caroline A. . Ross
Summary: SrCo1-xFexO3-delta films grown using pulsed laser deposition on SrTiO3 substrates can form either single-phase films or two-phase self-assembled nanocomposite films depending on the oxygen partial pressure. High oxygen partial pressure promotes phase separation of SCFO into a nanocomposite material composed of Co oxide pillars embedded in a Fe-rich SCFO matrix. Ionic liquid gating of the nanocomposites oxidizes the material and induces magnetic properties.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Kavita Sahu, Aditi Bisht, Alapan Dutta, Tapobrata Som, Satyabrata Mohapatra
Summary: Plasmonic nanocomposite thin films of Au-Cu2O-CuO were fabricated by RF magnetron co-sputtering and thoroughly analyzed by various techniques. The nanocomposite thin film showed excellent photocatalytic performance for organic pollutants degradation and significant catalytic activity for 4-NP transformation. The presence of Au nanoparticles in the Cu2O-CuO thin film improved charge separation and transport, enhancing the catalytic and photocatalytic features of the nanocomposite.
SURFACES AND INTERFACES
(2021)
Article
Physics, Applied
Ravibabu Kancharla, Ashok Vudayagiri
Summary: Cobalt ferrite films were prepared by RF sputtering and the effects of annealing and variation in gas pressure on their crystal structure, magnetic and optical properties were studied. The study showed that annealing significantly improved the magnetic properties of the films and they can be used for temperature sensor applications. The results were also confirmed by transmittance spectra and surface morphology analysis.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2023)
Article
Chemistry, Multidisciplinary
T. K. Lin, H. W. Chang, W. C. Chou, B. A. Chen, C. R. Wang, D. H. Wei, C. S. Tu, P. Y. Chen
Summary: In this study, the crystalline structure, ferroelectricity, leakage current density, magnetic, and nanomechanical properties of BiFeO3 (BFO) films with Ce substitution were investigated. The results showed that Ce substitution improved the ferroelectric and magnetic properties of BCFO films, with an increase in remanent polarization and enhanced saturation magnetization. The BCFO films also exhibited strong anti-fatigue properties and enhanced nanomechanical characteristics influenced by grain size and phase composition.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Kyung Mee Song, Dong-Ok Kim, Jae-Sung Kim, Dong Ryeol Lee, Jun Woo Choi
CURRENT APPLIED PHYSICS
(2018)
Article
Multidisciplinary Sciences
Seonghoon Woo, Kyung Mee Song, Xichao Zhang, Yan Zhou, Motohiko Ezawa, Xiaoxi Liu, S. Finizio, J. Raabe, Nyun Jong Lee, Sang-Il Kim, Seung-Young Park, Younghak Kim, Jae-Young Kim, Dongjoon Lee, OukJae Lee, Jun Woo Choi, Byoung-Chul Min, Hyun Cheol Koo, Joonyeon Chang
NATURE COMMUNICATIONS
(2018)
Article
Multidisciplinary Sciences
S. P. Kang, N. J. Kim, H. Y. Kwon, J. W. Choi, B. C. Min, C. Won
SCIENTIFIC REPORTS
(2018)
Article
Materials Science, Multidisciplinary
Tae Cheol Kim, Shuchi Ojha, Guo Tian, Seung Han Lee, Hyun Kyu Jung, Jun Woo Choi, Lior Kornblum, Frederick J. Walker, Charles H. Ahn, Caroline A. Ross, Dong Hun Kim
JOURNAL OF MATERIALS CHEMISTRY C
(2018)
Article
Nanoscience & Nanotechnology
Seung Han Lee, Guo Tian, Tae Cheol Kim, Hyun Kyu Jung, Jun Woo Choi, Frederick J. Walker, Charles H. Ahn, Caroline A. Ross, Dong Hun Kim
Article
Multidisciplinary Sciences
Si Nyeon Kim, Jun Woo Choi, Sang Ho Lim
SCIENTIFIC REPORTS
(2019)
Article
Physics, Applied
Kyoung-Woong Moon, Jungbum Yoon, Jun Woo Choi, Changsoo Kim, Dong-Ok Kim, Dongseuk Kim, Byong Sun Chun, Byoung-Chul Min, Chanyong Hwang
PHYSICAL REVIEW APPLIED
(2019)
Article
Multidisciplinary Sciences
H. Y. Kwon, N. J. Kim, C. K. Lee, H. G. Yoon, J. W. Choi, C. Won
SCIENTIFIC REPORTS
(2019)
Article
Materials Science, Multidisciplinary
Byungmin Sohn, Bongju Kim, Jun Woo Choi, Seo Hyoung Chang, Jung Hoon Han, Changyoung Kim
CURRENT APPLIED PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Se Young Park, Dong Seob Kim, Yu Liu, Jinwoong Hwang, Younghak Kim, Wondong Kim, Jae -Young Kim, Cedomir Petrovic, Choongyu Hwang, Sung-Kwan Mo, Hyung-jun Kim, Byoung-Chul Min, Hyun Cheol Koo, Joonyeon Chang, Chaun Jang, Jun Woo Choi, Hyejin Ryu
Article
Multidisciplinary Sciences
N. Gao, S. -G. Je, M. -Y. Im, J. W. Choi, M. Yang, Q. Li, T. Y. Wang, S. Lee, H. -S. Han, K. -S. Lee, W. Chao, C. Hwang, J. Li, Z. Q. Qiu
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Si Nyeon Kim, Ku Hoon Chung, Jun Woo Choi, Sang Ho Lim
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Chanki Lee, Hee Young Kwon, Nam Jun Kim, Han Gyu Yoon, Chiho Song, Doo Bong Lee, Jun Woo Choi, Young-Woo Son, Changyeon Won
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
Seonghoon Woo, Kyung Mee Song, Xichao Zhang, Motohiko Ezawa, Yan Zhou, Xiaoxi Liu, Markus Weigand, Simone Finizio, Jorg Raabe, Min-Chul Park, Ki-Young Lee, Jun Woo Choi, Byoung-Chul Min, Hyun Cheol Koo, Joonyeon Chang
NATURE ELECTRONICS
(2018)
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)