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106 notícias encontradas para "magnet"
Optical writing of antiferromagnets points toward new storage devices and energy efficient
A German-Japanese research team involving the University of Augsburg has made a significant breakthrough in the use of antiferromagnets. For the first time, the team has succeeded in writing magnetic information using only ultrashort laser pulses—without the need for electric cur
Controlling magnetic chirality could help memory pack in more data
Magnetic storage devices, like a computer's hard disk drive, utilize magnets to represent binary data. However, as these devices are downsized, stray magnetic fields generated by individual magnetic components can interact with neighboring elements to cause operational malfunctio
Astronomers witness the birth of a magnetar for the first time
Astronomers witness the birth of a magnetar for the first time
A strange "chirping" signal from a distant supernova has revealed the birth of a magnetar, confirming that these incredibly magnetic neutron stars can power the universe's brightest stellar explosions. The discovery also marks the first time Einstein's general relativity has been
Evidence of elusive high-energy gravitons in quantum Hall systems
Electrons, negatively charged particles, sometimes coordinate their movements in ways that produce certain collective excitations referred to as quasiparticles. One case in which this occurs is the quantum Hall effect, a phenomenon that emerges when electrons are confined to a ve
Magnetic octupole model captures domain-wall motion in noncollinear antiferromagnets
Magnetic octupole model captures domain-wall motion in noncollinear antiferromagnets
Researchers from The Grainger College of Engineering at the University of Illinois Urbana-Champaign have developed the first magnetic multipole-based micromagnetic model for antiferromagnets. Published in Applied Physics Reviews, their generalized framework provides a theoretical
Heat-shrinking materials get cleaner production route with lower temperatures and finer pa
Heat-shrinking materials get cleaner production route with lower temperatures and finer pa
Among the many modern technologies that shape life today, functional oxide materials are found in almost everything, from advanced electronics to energy-efficient systems. Functional oxides with high-valent metal ions are a significant topic of interest because of their unusual p
A new route to electrically controlled helimagnetic structures
Advanced magnetic memory and spintronic devices rely on the ability to control magnetic states using electricity. Today, such technologies work by manipulating relatively simple magnetic structures found in ferromagnets, where all the magnetic moments point the same way. However,
NASA space telescope maps magnetic fields of 'Lighthouse' pulsar
NASA space telescope maps magnetic fields of 'Lighthouse' pulsar
For the first time, scientists have used NASA's IXPE (Imaging X-ray Polarimetry Explorer) to directly measure the magnetic fields of PSR J1101−6101, a pulsar located within what is often referred to as the Lighthouse Nebula. The results provide new insight into the structure of s
Could permanent magnets protect astronauts from solar storms?
Could permanent magnets protect astronauts from solar storms?
Shielding astronauts from the deadly radiation they face is a central challenge for any designer of a deep-space crewed mission. Even relatively low levels of exposure over long periods can lead to everything from central nervous system damage to cancer. But current solutions, su
Reimagining the furnace: How a new magnetic design could supercharge industrial plasma
Reimagining the furnace: How a new magnetic design could supercharge industrial plasma
Imagine trying to trap a miniature star inside a machine without letting it touch the walls or burn itself out. This is the central, high-stakes challenge of high-temperature plasma engineering.
Tiny magnetic 'flowers' could expand how researchers image spintronic materials under stro
Tiny magnetic 'flowers' could expand how researchers image spintronic materials under stro
Materials with magnetic nanostructures have a wide range of potential applications. One area is so-called spintronics, with devices that encode information in magnetic domains. These magnetic bits can be written, read and erased in a more energy-efficient way than bits in current
Researchers define new frontier in quantum materials
Researchers define new frontier in quantum materials
Researchers at City College of New York physicist Vinod M. Menon's Laboratory for Nano and Micro Photonics (LaNMP) have outlined an emerging frontier in quantum materials: atomically thin systems in which light, magnetism and electric charge are strongly intertwined. This rapidly