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Magnet, capable of creating 'room-temperature quantum computers
2023 / 11 / 23
Recently, a research team at the University of Texas in the United States has successfully developed a quantum computing material that can operate stably at room temperature, exhibiting magnetic strength 100 times greater than pure iron. This groundbreaking achievement overcomes the reliance on ultra-low temperature environments, paving the way for the widespread adoption of quantum computing. Additionally, it has the potential to alleviate future material supply shortages, bringing profound changes to the field of quantum computing. The related research, titled "Room temperature colossal superparamagnetic order in aminoferrocene–graphene molecular magnets," was published in the "Applied Physics Letters" [1]. While quantum computing technology holds the potential to solve complex problems at unprecedented speeds, it has long been hindered by a significant limitation – the need to operate at temperatures below zero degrees.
2023 / 11 / 10
Last Friday, our company organized a delightful dinner for all employees, marking a memorable evening filled with laughter, camaraderie, and delicious food. The event took place at a charming restaurant in the heart of the city, creating a perfect setting for an enjoyable gathering. The purpose of the dinner was not just to indulge in gastronomic delights but also to strengthen the bonds among colleagues. As the day unfolded, it became evident that the evening exceeded expectations in fostering teamwork and building a positive work culture. The dinner commenced with a warm welcome from our CEO, expressing gratitude for everyone's hard work and dedication. This set the tone for the evening, creating an atmosphere of appreciation and recognition. The management team took the opportunity to acknowledge outstanding achievements and milestones, making everyone feel valued and motivated.
Even the US's planned rare earth magnet factory can't shake the influence of China
2023 / 10 / 09
The Pentagon is funding a company named E-VAC Magnetics to make rare earth magnets in the US, to reduce its reliance on China
Designing a dysprosium-free high-performance neodymium magnet
2023 / 09 / 09
Fujitsu Limited today announced that, in joint research with the National Institute for Materials Science (NIMS) and Fujitsu Laboratories Ltd., it has developed the world's largest magnetic-reversal simulator, using a mesh covering more than 300 million micro-regions. Based on the large-scale magnetic-reversal simulation technology first developed in 2013, this new development offers a faster calculation algorithm and more efficient massive parallel processing. The simulations are run on the K computer. In addition, by utilizing this technology, Fujitsu conducted large-scale simulations to clarify the correlation between the fine structure of neodymium magnets, a type of permanent magnet, and magnetic strength, by examining the process of magnetic reversal in neodymium magnets. The results successfully demonstrated a way to develop high-strength neodymium magnets with more than twice the coercivity of previous magnets, without dysprosium. In conventional neodymium magnets, dysprosium alloying is indispensable for enhancing magnetic coercivity. These simulation techniques offer a clear design rule for high-performance neodymium magnets that do not rely on dysprosium. Fujitsu and NIMS will be making a joint presentation on these results at the 13th Joint MMM-Intermag Conference, running January 11-15, 2016, in San Diego, California. In recent years, the increasing momentum for energy conservation has brought attention to improving the efficiency of motors and generators that use magnetic materials. Currently, ne
Prospects for the use of NdFeB materials: helping the humanoid robot industry usher in an explosion
2023 / 08 / 30
1. Characteristics and application of NdFeB materials As the third-generation rare earth permanent magnet material, NdFeB has the characteristics of small size, light weight and strong magnetism, and is known as the "magnet king" in the industry. Its excellent performance makes it play a key role in the production process of 3C consumer electronics, home appliances, new energy vehicles and wind power industries. In the field of humanoid robots, NdFeB is mainly used in the manufacture of servo motors. The servo motor is the core component to realize the precise control and efficient operation of the robot, and the high-performance NdFeB material is the key to realize the high performance of the motor. 2. The value of NdFeB materials in humanoid robots According to our calculations, assuming that the price of high-performance NdFeB for robot servo motors is 500,000 yuan/ton, then under optimistic circumstances, the demand for high-performance NdFeB in the global robot industry in 2025 will be 61,000 tons, and the market size will be 305 billion. At the same time, we noticed that only a few manufacturers in China have the ability to produce high-performance NdFeB permanent magnet materials. High-performance NdFeB permanent magnet materials have high manufacturing process barriers, customer certification barriers, capital barriers and patent barriers, which make them have high industry certainty. More importantly, Tesla's humanoid robot consumption is 1.75 times that of new energy vehicles. Combined with the total number of humanoid robots and the permanent magnet consumption of a single robot, the total consumption of NdFeB permanent magnets in humanoid robots will reach that of new energy vehicles. 442 times. This will make the NdFeB industry usher in an opportunity for revaluation. 3. Future Outlook Musk is very optimistic about the future demand fo
2023 / 08 / 29
You probably know that magnets attract specific metals and they have north and south poles. Opposite poles attract each other while like poles repel each other. Magnetic and electrical fields are related, and magnetism, along with gravity and strong and weak atomic forces, is one of the four fundamental forces in the universe. But none of those facts answers the most basic question: What exactly makes a magnet stick to certain metals? Or why don't they stick to other metals? Why do they attract or repel each other, depending on their positioning? And what makes neodymium magnets so much stronger than the ceramic magnets we played with as children? To understand the answers to these questions, it helps to have a basic definition of a magnet. Magnets are objects that produce magnetic fields and attract metals like iron, nickel and cobalt. The magnetic field's lines of force exit the magnet from its north pole and enter its south pole. Permanent or hard magnets create their own magnetic field all the time. Temporary or soft magnets produce magnetic fields while in the presence of a magnetic field and for a short while after exiting the field. Electromagnets produce magn
Permanent magnets help optimize geometry of future fusion reactor
2023 / 08 / 29
According to reports, Michael Zarnstorff (Michael Zarnstorff) of the Max Planck Princeton Plasma Physics Research Center in New Jersey was helping his son with a science fair project (he wanted to build a rail gun). Realized that neodymium boron magnets are now powerful enough to be used in place of superconducting coils. Saalsdorf's team's conceptual design combines simple toroidal superconducting coils with flat magnets attached to the outside of the plasma vacuum vessel. Just like a refrigerator magnet, only sticks to one side, creating a magnetic field mainly inside the container. To this end, the researchers proposed a simplified design of a fusion reactor based on strong permanent magnets. It is understood that when the nuclear fusion reactor was in the prototype stage, they confined the plasma in a ring magnetic field and heated it to millions of degrees Celsius. The goal was to fuse light nuclei into heavy nuclei and release a lot of energy. There's also a component called a stellator, which requires complex superconducting coils to twist the plasma as it travels in a donut. It is undeniable that this is a design with great potential. In the future, superconducting coils will be easier to manufacture and leave more space around vacuum vessels, scientists say, and could be used as key components in future fusion reactors.
Three-dimensional coercivity control by local diffusion in sintered NdFeB magnets
2023 / 08 / 29
JL MAG is the world`s largest and first CO2-neutral producer of sintered neodymium-iron-boron (NdFeB) magnets with its headquarters in Ganzhou, China. The start of huge volume demanding projects for the electrification of automobiles has increased demand for NdFeB magnets, which has resulted in an almost doubling of annual revenue at JL MAG. For this reason, further production plants in Baotou and Ningbo in China were built, and a plant in Monterrey, Mexico, is coming in 2024. As a leading magnet supplier, JL MAG is listening to market requirements and provides technical solutions for enabling products, reducing critical materials, and pushing down costs for customers. JL MAG`s newest development is localised coercivity control in sintered NdFeB magnets, which is expected to be a game-changer in efforts to reduce reliance on heavy rare earth elements.
2023 / 08 / 29
The development of sintered NdFeB magnets delivered the strongest magnet materials with the highest room-temperature magnetic field (remanence) and demagnetisation resistance (coercivity). The associated success story includes numerous applications with higher efficiencies due to higher power density and even applications that could only be enabled through the use of NdFeB. The biggest applications in terms of demand are wind turbine generators and traction machines for automotive. Traction machines contain one to three kilograms of sintered NdFeB, and wind turbine generators contain more than 1,000kg of this material. Sintered NdFeB magnets derive their coercivity and resulting temperature stability from the use of heavy rare earth elements, such as dysprosium, terbium, and holmium. The increasing demand for high-temperature stable magnets, driven by the electrification of automobiles, has resulted in price increases for these elements. The entire magnet industry is searching for processes to reduce these elements while maintaining or even improving the temperature stability. The first sintered NdFeB magnets using heavy rare earths were produced by what is now referred to as the traditional method: 600-1,200kg of heavy-rare-earth-containing material was melted, pulverised, pressed, aligned, and sintered. Afterward, the produced magnet material was cut into final dimensions.
Price increases affecting industry
2023 / 08 / 29
The large price increase of 2011, caused by reductions in China`s exports of rare earth elements, forced the magnet industry to focus on the reduction of heavy rare earth usage. After these reduction developments, many applications still use NdFeB, but no longer need the heavy rare earth elements. The coercivity was enhanced, e.g., by grain size reduction after pulverisation, or by metallurgical additives. Nevertheless, the high operating temperatures of traction machines which can be in the range of 140-200°C, still result in NdFeB magnets needing heavy rare earth elements. Wind turbine generator production has focused on heavy-rare-earth-free material solutions. However, in order to achieve this, power density has not been maximised, resulting in lower efficiencies. A quantum step forward in the development of sintered NdFeB was the reduction of heavy rare earths by keeping a large fraction of these elements out of the base material and instead adding them via diffusion into the magnet, after cutting the magnet material into final dimensions. With this so-called grain boundary diffusion (GBD) process, a significant reduction in heavy rare earth usage was possible. Because of the limitations of the diffusion process, which stops when a material gradient gets too small, the dimensions of the final magnets are limited to approximately 6mm in the smallest dimension.
The best solution for locally applied coercivity
2023 / 08 / 29
Coming back to the fact that diffusion magnets are always inhomogeneous, a question arises as to how to turn this into an advantage. The magnetic circuit does not need a homogenous material. Applications need a magnet that has a sufficiently high local coercivity at each position inside the magnet. Excessive coercivity can be a disadvantage and can lead to locally reduced remanence. In addition, there is no physical reason why high-field concentrations should appear inside a magnet. The field density in electrical machines invariably has `hot spots` at the magnet surface. Since the diffusion process starts from the surface and gives a gradient to the magnet`s centre, the diffusion process is the best solution for locally applied coercivity. The most recent development in reducing heavy rare earths in a sintered NdFeB magnet is local diffusion according to the local requirement of coercivity. JL MAG refers to this as three-dimensional grain-boundary diffusion (3D-GBD). Large reductions in heavy rare earth usage result in significantly associated price reductions, having been observed for several traction-machine projects.
2023 / 08 / 29
the potential outcome still depends on the specification. Specifying the magnet as consisting of several zones, with specific homogenous coercivity requirements, is an initial challenge. This is a compromise enabling the standard IEC 60404-5 on cut-off specimens to be utilised. The largest potential is obtained by a real, three-dimensional profile of heavy rare earths and coercivity for the respective zones. Magnet users are still reluctant to go in this direction, as it results in quality assurance to standard IEC60404-5 no longer being possible at the part level. The final release testing of a magnet is shifted to the release at the machine level, at a test bench. In parallel, all production processes need to be fixed by a magnet supplier – akin to existing automotive standards. Why insist on a part-level release as the exception for a sintered 3D-GBD NdFeB magnet? Lamination sheets or hardened surfaces of shafts are good examples that show that not all parts of an electrical machine can be measured at the part level, but in fact, need machine-level testing. The local-diffusion approach does not require additional effort in magnetic-circuit engineering. The counter field distribution is calculated anyway and can be given as part of the specification to the magnet supplier. Furthermore, the scenario for inserting the magnets into the machine needs to be discussed. In the case of non-oriented insertion, where the side wi
New quantum magnet unleashes electronics potential
2023 / 08 / 28
Some of our most important everyday items, like computers, medical equipment, stereos, generators, and more, work because of magnets. We know what happens when computers become more powerful, but what might be possible if magnets became more versatile? What if one could change a physical property that defined their usability? What innovation might that catalyze? It`s a question that MIT Plasma Science and Fusion Center (PSFC) research scientists Hang Chi, Yunbo Ou, Jagadeesh Moodera, and their co-authors explore in a new open-access Nature Communications paper, [Strain-tunable Berry curvature in quasi-two-dimensional chromium telluride." Understanding the magnitude of the authors` discovery requires a brief trip back in time: In 1879, a 23-year-old graduate student named Edwin Hall discovered that when he put a magnet at right angles to a strip of metal that had a current running through it, one side of the strip would have a greater charge than the other. The magnetic field was deflecting the current`s electrons toward the edge of the metal, a phenomenon that would be named the Hall effect in his honor. In Hall`s time, the classical system of physics was the only kind, and forces like gravity and magnetism acted on matter in predictable and immutable ways: Just like dropping an apple would result in it falling, making a [T" with a strip of electrified metal and magnet resulted in the Hall effect, full stop. Except it wasn`t, really; now we know quantum mechanics plays a role, too.
Scientists Trap Light Inside a Magnet – Paves Way for Tech Innovations
2023 / 08 / 28
Scientists have discovered that trapping light within certain magnetic materials can significantly enhance their intrinsic properties. Their study examined a specific layered magnet capable of hosting powerful excitons, enabling it to trap light independently. The optical reactions of this material to magnetic occurrences are remarkably stronger than those in regular magnets.
Scientists Trap Light Inside a Magnet
2023 / 08 / 28
A groundbreaking study conducted by Vinod M. Menon and his team at The City College of New York reveals that trapping light within magnetic materials can significantly boost their intrinsic properties. These heightened optical reactions in magnets pave the way for innovations in magnetic lasers, magneto-optical memory devices, and even in emerging quantum transduction applications. As detailed in their new article published on August 16 in the journal Nature, Menon, and his team investigated the properties of a layered magnet that hosts strongly bound excitons - quasiparticles with particularly strong optical interactions. Because of that, the material is capable of trapping light - all by itself. As their experiments show, the optical responses of this material to magnetic phenomena are orders of ma
USA Rare Earth Acquires NdFeB Permanent Magnet Manufacturing Equipment
2023 / 08 / 02
Texas Mineral Resources Corp. (TMRC), an exploration company targeting the heavy rare earths and a variety of other technology metals and industrial minerals, is pleased to announce that USA Rare Earth LLC, the funding and development partner of the Round Top Heavy Rare Earth and Critical Minerals Project in West Texas, has purchased the neodymium iron boron (NdFeB) permanent magnet manufacturing equipment formerly owned and operated in North Carolina by Hitachi Metals America, Ltd. Demand for rare earth magnets is being driven by electric vehicles (electric motors and batteries), wind generators (direct drive generators), medical devices (personal [vital signs" monitors and medical imaging machines), smart phones, and aerospace/defense applications, where high-performance in extreme conditions is important. The $14 billion-a-year rare earth magnet market is more than 60% controlled by China which, under Made in China 2025, is increasingly using rare earth magnets in finished and semi-finished products, as opposed to exporting the magnets. Industry sources estimate the global rare earth magnet market will nearly double by 2027. The equipment purchased by USA Rare Earth should provide most of what is needed to re-establish rare earth magnet production in the U.S. and, with the addition of some readily available components, can produce at least 2,000 tons annually of rare earth magnets. At 2,000 tons per year, the USA Rare Earth
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