Article
Chemistry, Multidisciplinary
Shan Lin, Zhiwen Wang, Qinghua Zhang, Shengru Chen, Qiao Jin, Hongbao Yao, Shuai Xu, Fanqi Meng, Xinmao Yin, Can Wang, Chen Ge, Haizhong Guo, Chi Sin Tang, Andrew T. S. Wee, Lin Gu, Kui-juan Jin, Hongxin Yang, Er-Jia Guo
Summary: This study demonstrates the synthesis of high-quality single-phase chromium oxynitride thin films using in-situ nitrogen doping, which exhibits robust ferromagnetic and insulating state. By increasing nitrogen content, the crystal structure changes and saturation magnetization decreases significantly. The authors also achieve a large and controllable exchange bias field in the chromia heterostructures through synthetic anion engineering, reflecting potential applications in modern magnetic sensors and read heads.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Zongyang Peng, Zhuang Zuo, Qi Qi, Shaocong Hou, Yongping Fu, Dechun Zou
Summary: Exploring deposition techniques suitable for industrial production is important for perovskite solar cells (PSCs). Magnetron sputtering, a well-developed vapor deposition technique, offers advantages such as wide material selection and fast deposition speed. Depositing all functional layers of PSCs using magnetron sputtering can improve cost and stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yongyao Su, Weijiu Huang, Tengfei Zhang, Chunbao Shi, Rong Hu, Zhenguo Wang, Lixin Cai
Summary: Ta coatings were prepared on medical titanium alloy to improve wear resistance, and their phase structure and properties were studied under different preparation conditions. Multi-layer coatings showed a non-columnar feature, while pure phase columnar crystals were found in monolayer coatings. Among the coatings, the one prepared under direct current bias voltage exhibited the best adhesion and wear resistance.
Article
Materials Science, Multidisciplinary
Du-Yun Kim, Ji-Hye Kwon, Gil-Su Jang, Nong-Moon Hwang
Summary: Non-classical crystallization involving charged nanoparticles as building blocks for film growth has been extensively studied in chemical vapor deposition. Recent studies have shown similar mechanisms in radio frequency and DC magnetron sputtering processes. This study focused on the impact of pressure on Ti nanoparticle generation and film deposition during radio frequency sputtering. The results indicated that the number density of Ti nanoparticles and the growth rate of Ti films are sensitive to substrate bias and pressure conditions.
Article
Chemistry, Inorganic & Nuclear
Cennet Yildirim, Erkan Kacar, Ozden Kisacik, Cihan Eseroglu, Hueseyin Doyuran
Summary: Boron carbide thin films have attracted significant interest due to their exceptional physical and chemical properties. The results of this study indicate that substrate bias significantly affects the mechanical, structural, and morphological properties of these films.
SOLID STATE SCIENCES
(2023)
Article
Chemistry, Analytical
Xinlv Duan, Congyan Lu, Xichen Chuai, Qian Chen, Guanhua Yang, Di Geng
Summary: An inter-layer dielectric (ILD) deposition process is demonstrated for the fabrication of coplanar In-Ga-Zn-O (IGZO) thin-film transistors (TFTs) to simultaneously form conductive regions. The process allows the deposition of N+-IGZO regions and achieve excellent ohmic contact without additional steps. The fabricated TFTs show good performance and the applicability is verified by a ring oscillator.
Article
Materials Science, Multidisciplinary
Elena Olegovna Nasakina, Maria Andreevna Sudarchikova, Konstantin Yurievich Demin, Alexandra Borisovna Mikhailova, Konstantin Vladimirovich Sergienko, Sergey Viktorovich Konushkin, Mikhail Alexandrovich Kaplan, Alexander Sergeevich Baikin, Mikhail Anatolyevich Sevostyanov, Alexei Georgievich Kolmakov
Summary: Composite materials with a Ta/Ti base-transition layer-surface metal layer were produced using complex vacuum technology. The structure and mechanical properties were studied, showing an almost linear increase in thickness of both surface and transition layers with deposition time and power. The growth of the surface layer slowed down above a certain critical power value. The growth rate of the transition layer was slower than the surface layer, and the layer growth rates for tantalum and titanium were the same.
Article
Materials Science, Multidisciplinary
Gui-Sheng Zeng, Chi-Lung Liu, Sheng-Hui Chen
Summary: High-quality single-crystal-like Ge (004) thin films were successfully epitaxially grown on Si (001) substrates using radio-frequency magnetron sputtering, showing improved crystalline quality. These results have important applications in the fabrication of high-efficiency III-V solar cells and photodetectors.
Article
Multidisciplinary Sciences
Tomasz Grudniewski, Estera Michaluk
Summary: This paper investigates the effect of sputtering time and thin copper layer thickness on grain size, surface morphology, and electrical properties. The experimental results show that the structure of thin copper layers can significantly change depending on the thickness and deposition process parameters. The roughness of the copper film increases linearly with film thickness, while the crystallite size only significantly changes for films thicker than 600 nm. Additionally, the resistivity of the copper film decreases to approximately 2 mu omega x cm for films with a thickness of around 400 nm, and further increasing the thickness does not have a significant effect on resistivity.
Article
Chemistry, Physical
Sharon Waichman, Shahaf Froim, Ido Zukerman, Meir Buzaglo, Miri Chachashvili, Shmuel Barzilai
Summary: Boron carbide is used as a coating for neutron-based detection applications due to its high cross-section for neutron absorption, while aluminum is used as a substrate material. However, adhesion between these two materials is challenging due to their thermal expansion coefficients and the formation of unstable aluminum-carbon bonds. By using a pulsed-DC magnetron sputtering method, we deposited boron carbide coatings with an adhesive titanium layer on an aluminum substrate. The optimal bias voltage for deposition was determined to be between -25 +/- 5V and -60V, resulting in continuous and strongly adherent coatings for over 27 months when combined with a titanium layer.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Yi Shang, Ke Tang, Zhuorui Chen, Zhiluo Zhang, Jie Deng, Yan Hu, Keyun Gu, Meng Cao, Linjun Wang, Jian Huang
Summary: The Ta-doped Ga2O3 films were successfully grown with uniform, smooth surface morphology and high transparency (>85%) in the wavelength region of 300-800 nm. The films showed low resistivity of 0.089 Omega cm and high carrier concentration of 2.4 x 10(19) cm(-3). XPS spectra confirmed the incorporation of Ta into the films and the presence of Ta5+ ions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Physics, Fluids & Plasmas
Swetha Suresh Babu, Martin Rudolph, Daniel Lundin, Tetsuhide Shimizu, Joel Fischer, Michael A. Raadu, Nils Brenning, Jon Tomas Gudmundsson
Summary: The ionization region model (IRM) was used to simulate a high power impulse magnetron sputtering discharge with a tungsten target. The study found that the initial peak in the discharge current was caused by argon ions bombarding the cathode target, after which W+ ions became the dominant ions and contributed to the total discharge current. Additionally, the findings were in good agreement with experimentally determined deposition rates.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Jun Su, Jiaye Ye, Zhenyu Qin, Lidong Sun
Summary: In this study, an ultrathin polytetrafluoroethylene (PTFE) film was deposited onto Nafion substrates using radio frequency magnetron sputtering to form PTFE@Nafion composite membranes. The PTFE layer improved the dimensional stability and ion selectivity of the Nafion membranes, resulting in better self-discharge property and discharge capacity retention in the VRFB single cell.
Article
Materials Science, Coatings & Films
Xu Yu, Junjun Wang, Linqing Wang, Weijiu Huang
Summary: CrNbSiTiZr high-entropy alloy films were fabricated on different substrates with varying bias voltages, showing amorphous structure and high hardness. The film deposited at -50V bias exhibited high residual compressive stress, while wear mechanism shifted from adhesive to abrasive with increasing negative bias. Superior electrochemical corrosion resistance was observed for all films, with the film at -50V bias showing the best performance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Jinghua Feng, Guangcui Yuan, Li Mao, Juscelino B. Leao, Ryan Bedell, Kemal Ramic, Emily de Stefanis, Youyang Zhao, Judith Vidal, Li Liu
Summary: The study reveals the layered structure of Inconel 625 coatings, including a 2 nm thick Cr-rich Inconel sublayer and a 2 nm thick oxide layer primarily composed of NiO. By comparing coatings with different deposition times, it was found that the thickness of the principal Inconel 625 layer grows linearly with deposition time, while other layers remain constant.
SURFACE & COATINGS TECHNOLOGY
(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)