Article
Chemistry, Physical
I. El Heda, J. Massoudi, R. Dhahri, E. Dhahri, F. Bahri, K. Khirouni, B. F. O. Costa
Summary: The structure, elastic properties, and optical properties of two ferrite ceramic materials were investigated. It was found that these compounds exhibit good conductivity and ductile nature, making them suitable for the fabrication of electrical and microwave devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Marcin Kacki, Marek S. Rylko, John G. Hayes, Charles R. Sullivan
Summary: Manganese-zinc ferrites are preferred for high-frequency and high-power magnetic components. However, manufacturers' material specifications lack sufficient information for design optimization. This article proposes a method to determine the properties of Mn-Zn ferrite and provides experimental frequency characteristics for four ferrite materials. The impacts of physical size, temperature, and force on ferrite properties are also considered.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Bowen Sun, Danyue Ma, Guohua Bai, Jixi Lu, Ke Yang, Kai Wang, Xueping Xu, Yueyang Zhai, Wei Quan, Bangcheng Han
Summary: This study evaluated the magnetic noise of Mn-Zn ferrite magnetic shield based on its grain size and established a correlation between grain size and magnetic permeability. The predicted values of the magnetic noise were consistent with the experimental results, suggesting the feasibility of the proposed approach for developing low-noise magnetic shields.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Alexandre Harmon, Marilyne Roumanie, Ulrich Soupremanien, Denis Autissier
Summary: This study focuses on the analysis of the optical properties of formulations containing Mn-Zn ferrite powder. Different particle sizes were used to study the influence of the cured monolayer evolution and the optical properties of the ferrite.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Anjana Sharma, Khalid Mujasam Batoo, Omar M. Aldossary, Shilpi Jindal, Nupur Aggarwal, Gagan Kumar
Summary: Copper-substituted Mn-Zn magnetic nano ferrites were successfully fabricated using a solution combustion method, and the effects of dopant concentration on the properties of the samples were studied. The research showed that doping with Cu led to a reduction in bandgap energy, an increase in conductivity, and improvement in its application for electromagnetic devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Hossein Goodarzi, Manoochehr Sobhani
Summary: In this study, Mn0.76Zn0.24Fe2O4 spinel ferrite was fabricated with the addition of CaO. The addition of CaO improved the theoretical density and saturation magnetization of the samples.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Bin Zou, Hongyu Xing, Jikai Liu, Qinghua Chen, Xinfeng Wang, Lei Li
Summary: Tailored Mn-Zn ferrite ceramics were prepared by stereolithography (SLA) 3D printing technology, overcoming the difficulties in the printing process and achieving optimized printing parameters and sintering conditions. The resulting ceramics exhibit excellent performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Hyung Joon Kim, Sung Wook Hyun, So Hee Kim, Hyunkyung Choi
Summary: Mn-Zn ferrite nanoparticles for magnetic hyperthermia applications were synthesized using a high temperature thermal decomposition method, with a maximum saturation magnetization of 83.2 emu/g. The results suggest that these synthesized nanoparticles have potential applications in the field of magnetic hyperthermia.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
A. Hossain, I. N. Esha, I. B. Elius, M. N. Khan, Kazi Hanium Maria
Summary: This study investigated the effects of varying vanadium concentration on the crystal structure, magnetic properties, and electrical properties of Mn-Zn ferrites. The substitution of vanadium enhanced densification in the samples, while different vanadium contents had noticeable effects on magnetization and electrical conductivity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
S. Grace Infantiya, A. Aslinjensipriya, R. Sylvia Reena, K. Joseph Pious, Periyasamy Sivakumar, C. Justin Raj, S. Jerome Das
Summary: In this study, Zn and Mn co-substituted perovskite ceramics were fabricated using the sol-gel technique and their structural, morphological, dielectric, and electrical conductivity properties were examined. The results showed that the incorporation of Zn and Mn ions improved the temperature stability and dielectric properties of the ceramics, which exhibited semiconducting behavior.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Meng Li, Zhe Xue, Zhang-Zhi Shi, Yi-Nan Wang, Fu-Zhi Dai, Li-Zhi Zhang, Shao-Xiong Zhou, Bing-Xin Huang, Zhen-Peng Guan, Lu-Ning Wang
Summary: This study reveals that trace Mn significantly improves the high temperature strength of pure Zn. The addition of 0.8 wt.% Mn increases the peak stress of pure Zn from 46 MPa to 84 MPa at 300°C/0.1 s-1. The as-compressed Zn-0.8Mn alloy has a bimodal grain structure with fine grains surrounding a coarse grain. The activation of non-basal slip and pile-up of dislocations near grain boundaries or interfaces enhance the strength of the alloy. First-principles calculations demonstrate that Mn addition reduces the stacking fault energy of slip systems, thereby promoting slip activation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
P. Emadi, B. Andilab, K. Borodianskiy, C. Ravindran
Summary: The use of lightweight alloys, such as magnesium, is crucial for improving fuel efficiency and reducing emissions in automobiles, as well as increasing the range of electric vehicles. This study investigated the effects of SiC nanoparticles on the microstructure and mechanical properties of Mg-Al-Zn-Mn alloy composites. The addition of SiC resulted in significant grain refinement, more uniform phase dispersion, and improved tensile strength, making it a promising material for strengthening light alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Linhao Li, Brant Walkley, Ian M. Reaney, Derek C. Sinclair
Summary: Low levels of impurities can significantly impact the electrical properties of metal oxides, influencing defect chemistry and conduction mechanisms. High purity reagents are crucial in studying ferrite-based perovskites to achieve accurate results.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Yiming Li, Shuo Wang
Summary: This article investigates the equivalent parallel capacitance and resistance within Mn-Zn ferrite toroidal cores of inductors with single-layer windings, exploring the effects of core design and winding turns on impedance. A stacked core structure is studied for high-frequency impedance improvement. Various factors affecting EPC and techniques for achieving high HF impedance are proposed and validated through simulations and experiments.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Ying-hua Bai, De-yue Zhang, Yao Lu
Summary: This study achieves multi-functional integration of materials and reduces electromagnetic pollution in the building environment using a composite material. The combination of Mn-Zn ferrite (MZF) and carbon fiber improves the electromagnetic loss capability and impedance matching of the composite material, significantly enhancing the electromagnetic wave absorption effect.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Alexandre Pasko, Alexis Pecheux, Muriel Tyrman, Loic Perriere, Ivan Guillot, Victor Etgens, Martino LoBue, Frederic Mazaleyrat
Summary: The kinetics of magnetization reversal in a rare-earth-free Mn-Al-C permanent magnet was investigated, with experiments conducted at different temperatures and various magnetic parameters measured. The results showed that magnetization reversal is temperature-dependent and involves a thermally activated mechanism, while wall thickness and crystallite size also play a role in magnetic-domain nucleation.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Engineering, Electrical & Electronic
Smail Ahmim, Morgan Almanza, Vincent Loyau, Alexandre Pasko
Summary: A thermomagnetic generator using a Halbach structure and LaFeSi magnetocaloric material is presented, showing low power output but providing useful clues for performance improvements through detailed analysis and experimentation.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Engineering, Electrical & Electronic
Alex Aubert, Vincent Loyau, Frederic Mazaleyrat, Martino LoBue
Summary: This article investigates the importance of accurately characterizing the piezomagnetic effect in magnetostrictive materials by directly measuring the dynamic magnetostriction in nickel ferrite. The study emphasizes the significance of integrating dynamic magnetostrictive coefficients into calculations to optimize material performance.
IEEE TRANSACTIONS ON MAGNETICS
(2021)
Article
Physics, Applied
Doan Nguyen Ba, Yunlin Zheng, Loic Becerra, Massimiliano Marangolo, Morgan Almanza, Martino LoBue
Summary: This study introduces a method for producing polycrystalline Gd free-standing flexible films, while investigating their magnetic and magnetocaloric properties. The results show the stability of these properties even under bending, with potential applications in energy conversion for IoT devices and medical implants.
PHYSICAL REVIEW APPLIED
(2021)
Article
Chemistry, Physical
N. Hosni, W. Selmi, K. Zehani, F. Mazaleyrat, H. Maghraoui-Meherzi
Summary: The influence of experimental parameters on the saturation magnetization of NiFe2O4 thin films was determined using experimental design methodology, and the optimal conditions were predicted. The structure, phase identification, and morphology of the prepared NiFe2O4 thin films under the optimal conditions were characterized. Additionally, the electrochemical properties and resistance behavior of NiFe2O4 were investigated.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Frederic Mazaleyrat
Summary: This article discusses the importance of hard magnets in transportation technologies and renewable energies. It highlights the anticipated high demand for magnets in the automobile industry as it switches to full electric drive in the next 30 years. However, the reliance on critical materials, such as rare-earth elements and cobalt, poses a potential market challenge. The article reviews existing hard magnets with functional properties suitable for automobile electric drives and explores the evolution of materials aiming to reduce or eliminate the use of critical elements.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Materials Science, Multidisciplinary
Van Tang Nguyen, Frederic Mazaleyrat, Florent Calvayrac, Quang Minh Ngo, Nirina Randrianantoandro
Summary: The influence of Fe addition on the thermal stability, crystallography, and magnetic properties of tau-Mn51Al47C2 was investigated. It was found that the addition of Fe enhanced the thermal stability of the alloy and reduced the magnetization and Curie temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Doan Nguyen Ba, Loic Becerra, Massimiliano Marangolo, Morgan Almanza, Martino LoBue
Summary: Researchers propose a mechanical method to produce freestanding thick Gadolinium films with excellent magnetic properties and high-quality surfaces, which can be used in microelectromechanical energy conversion devices and facilitate fast and efficient heat transfer.
Article
Materials Science, Multidisciplinary
C. Parmar, R. Verma, S. S. Modak, F. Mazaleyrat, S. N. Kane
Summary: The study investigated the effect of 120 MeV Si-28(9+) ion irradiation on ZnFe2O4 synthesized by sol gel auto-combustion technique, revealing changes in structural and magnetic properties with increasing irradiation dose.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Sebastien Brialmont, Jean-Francois Fagnard, Benoit Vanderheyden, Frederic Mazaleyrat, Seungyong Hahn, Anup Patel, Philippe Vanderbemden
Summary: In this study, the ac magnetic hysteresis loops of a Ni-5at.%W alloy ferromagnetic substrate in second-generation YBCO tapes were measured. The peak intensity of the relative permeability was found to be unaffected by temperature, while the coercive field showed temperature dependence. Hysteresis losses exhibited power law behavior with respect to the amplitude of the flux density, and this behavior was also studied at low fields. The Jiles-Atherton model was able to accurately reproduce the hysteresis loops and estimate the temperature dependence of the hysteresis parameters.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Engineering, Electrical & Electronic
Morgan Almanza, Thomas Martinez, Mickael Petit, Yoan Civet, Yves Perriard, Martino LoBue
Summary: Electroactive polymers have promising characteristics for application in cardiac assist devices, but the high access resistance and the need for efficient voltage supply switching and wireless communication and power transfer systems pose challenges.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Physics, Multidisciplinary
Anthony N. Tantillo, Alexander Barcza, Volker Zellmann, Morgan Almanza, Vittorio Basso, Martino LoBue, Nora M. Dempsey, Karl G. Sandeman
Summary: This article discusses how magnetically hard materials can be used in thermomagnetic power generation (TMG) cycles to expand the energy conversion area in the magnetisation vs. applied field (M - H) plane. Experiments show that hard ferromagnets with higher thermal conductivity and a greater change of magnetization with temperature may outperform existing TMG materials. Computational results suggest that biasin g a soft magnet with a hard ferromagnet is equivalent to shifting the M-H loop. Artificial spin reorientation materials are also explored as potential TMG working materials.
Article
Physics, Applied
N. Zeggai, B. Dkhil, M. LoBue, M. Almanza
Summary: A figure of merit is defined to assess the cooling efficiency of electrocaloric materials by considering both caloric properties and losses. A measurement setup based on flexible thermistances is used to directly measure the caloric effect and losses of P(VDF-TrFE-CFE) electrocaloric polymer films. The data, along with the figure of merit, are used to extrapolate the expected cooling efficiency of the studied EC material under actual working conditions. Dielectric losses are found to be a major limiting factor, and reducing material losses is identified as a key objective for optimizing EC refrigerants for cooling applications. Strategies towards loss reduction are outlined.
APPLIED PHYSICS LETTERS
(2023)
Article
Thermodynamics
Lucas Depreux, Morgan Almanza, Nouh Zeggai, Fabien Parrain, Martino LoBue
Summary: This paper investigates the limitations of electrocaloric cooling technology and proposes a model that takes these limitations into account. The results suggest that reducing air pressure can effectively reduce air losses, providing a promising solution for further improvement of the technology.
APPLIED THERMAL ENGINEERING
(2022)