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Following ultrafast magnetization dynamics in depth

Scientists at Max Born Institute create novel method to probe magnetic thin film systems, identifying heat injection from platinum layer as cause of magnetization changes. The approach allows femtosecond temporal and nanometer spatial resolution, paving way for studying ultrafast magnetism and device-relevant geometries.

SourceMax Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI)·JournalPhysical Review Research·TypeExperimental study·DateJun 22, 2022

All-optical switching on a nanometer scale

Scientists at Max Born Institute demonstrate ultrafast emergence of all-optical switching by generating a nanometer-scale grating through interference of two pulses in the extreme ultraviolet spectral range. The researchers identify an intensity ratio as a fingerprint observable for AOS in diffraction experiments.

SourceMax Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI)·JournalNano Letters·TypeExperimental study·DateJun 15, 2022

Insight into the mystery of magnetism

FeRh, a metal with antiferromagnetic and ferromagnetic phases, has its phase transition kinetics measured using ultrafast techniques. The study reveals new insights into the ultrafast dynamics of magnetic materials.

SourceLancaster University·JournalNature Communications·TypeExperimental study·DateJun 13, 2022
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Earth’s magnetic poles not likely to flip: study

Researchers analyzed burnt artifacts, volcanic samples, and sediment cores to recreate the Earth's magnetic field over 9,000 years. Their new modeling technique predicts that the South Atlantic Anomaly will disappear within 300 years, ruling out an impending polarity reversal.

SourceLund University·JournalProceedings of the National Academy of Sciences·DateJun 7, 2022

Mechanism ‘splits’ electron spins in magnetic material

Researchers have discovered a unique mechanism called 'momentum-dependent spin splitting' that allows for strong spin currents and efficient magnetic switching. This discovery could lead to advances in magnetic random-access memory technologies.

SourceCornell University·JournalNature Electronics·DateMay 5, 2022
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Breakthrough for efficient and high-speed spintronic devices

Researchers at INRS have developed a new method to study the spin dynamics inside rare earth materials, promising for spintronic devices. The breakthrough uses a tabletop ultrafast soft X-ray microscope to spatio-temporally resolve spin dynamics.

SourceInstitut national de la recherche scientifique - INRS·DateApr 25, 2022

Physicists show how frequencies can easily be multiplied without special circuitry

Researchers at Martin-Luther-University Halle-Wittenberg discovered a way to convert frequencies to higher ranges using magnetic materials without additional components. This breakthrough could make certain electronic components obsolete and improve the energy efficiency of digital technologies.

SourceMartin-Luther-Universität Halle-Wittenberg·JournalScience·TypeExperimental study·DateMar 10, 2022

3D printed nanomagnets unveil a world of patterns in the magnetic field

Researchers created 3D DNA-like structures using advanced 3D printing and microscopy, discovering nanoscale topological textures in the magnetic field. This breakthrough enables control over magnetic forces on the nanoscale, promising new possibilities for particle trapping, imaging techniques, and smart materials.

SourceUniversity of Cambridge·JournalNature Nanotechnology·DateDec 20, 2021
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Magnetic Tunnel Junction Technology for the Angstrom Semiconductor Era

A research group at Tohoku University has successfully engineered relaxation time to achieve fast switching in sub-five-nm magnetic tunnel junctions, reaching 3.5 ns. This breakthrough enables the development of STT-MRAM-based semiconductor ICs with improved performance and power consumption.

SourceTohoku University·TypeMeta-analysis·DateDec 14, 2021

Efficient read-out in antiferromagnetic spintronics

Researchers have successfully demonstrated a strong exchange coupling of thin ferromagnetic layers to the antiferromagnetic compound Mn2Au, enabling large magnetoresistance effects. This breakthrough enables the use of well-established read-out methods in antiferromagnetic spintronics.

SourceJohannes Gutenberg Universitaet Mainz·JournalNature Communications·DateNov 26, 2021
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Researchers develop new approach for efficient data processing

Researchers develop a new method to perform logic operations more efficiently and reliably using magnonics. Nanostructured antiferromagnetic wires are well-suited for this purpose, enabling quick and low-energy computation.

SourceMartin-Luther-Universität Halle-Wittenberg·Journalnpj Computational Materials·TypeComputational simulation/modeling·DateSep 27, 2021

On the road to faster and more efficient data storage

Researchers have discovered a way to induce magnetic waves in antiferromagnets using ultrafast laser pulses, potentially leading to faster and more efficient data storage. This technology could endow materials with new functionalities for energy-efficient and ultrafast data storage applications.

SourceUniversity of Konstanz·JournalPhysical Review Letters·DateAug 17, 2021

Lunar samples solve mystery of the moon’s supposed magnetic shield

Researchers at the University of Rochester found that lunar samples do not show signs of magnetization from a magnetic shield. The lack of magnetization suggests that the moon has never had a prolonged dynamo field. Without this protection, solar wind implanted volatiles like helium 3 in the lunar soil.

SourceUniversity of Rochester·JournalScience Advances·TypeExperimental study·DateAug 5, 2021
Celestron NexStar 8SE Computerized Telescope

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Researchers propose a method of magnetizing a material without applying an external magnetic field

Scientists at São Paulo State University discovered that compressing paramagnetic salts adiabatically can produce magnetization. The process aligns the particles' spins, resulting in a constant total entropy and magnetized system. This method has potential applications in investigating other interacting systems.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalScientific Reports·TypeExperimental study·DateJul 29, 2021

Researchers resolve magnetic structures of different topological semimetals

Researchers have resolved magnetic structures of different topological semimetals using advanced techniques. For PrAlGe and DySb, the study reveals a uniaxial magnetic interaction in PrAlGe with antiferromagnetism and a field-induced tricritical phenomenon in DySb.

SourceHefei Institutes of Physical Science, Chinese Academy of Sciences·JournalPhysical Review B·DateJul 13, 2021

Controlling magnetization by surface acoustic waves

A collaborative research group successfully controlled the magnetization of a ferromagnetic thin film using circular vibrations of surface acoustic waves. The discovery opens up new possibilities for combining and developing acoustic and magnetic devices.

SourceTohoku University·JournalNature Communications·DateMay 27, 2021
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Demonstrating the world's fastest spintronics p-bit

Researchers at Tohoku University have developed a nanosecond operation technology for the spintronics-based probabilistic bit, enabling faster computation speeds and accuracy. The device, with an in-plane magnetic easy axis, achieves 100 times faster relaxation times than previous records.

SourceTohoku University·JournalPhysical Review Letters·DateMar 18, 2021

New hard disk write head analytical technology can increase hard disk capacities

Researchers at Tohoku University and Toshiba Corporation developed a new analytical technology for hard disk drives, enabling precise analysis of write head operations. The method achieves high spatial and temporal resolutions, potentially leading to further increases in HDD capacity and higher data transfer rates.

SourceTohoku University·JournalJournal of Applied Physics·DateJan 7, 2021
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Lower current leads to highly efficient memory

Researchers have developed a gallium arsenide-based ferromagnetic semiconductor that can act as memory by quickly switching its magnetic state in the presence of an induced current. The new material suppresses instability and lowers power consumption, offering highly efficient memory.

SourceUniversity of Tokyo·JournalNature Electronics·DateNov 30, 2020

Magnetic vortices come full circle

Researchers at the Paul Scherrer Institute report the discovery of three-dimensional magnetic 'vortex rings' within a tiny pillar made of gadolinium cobalt. These structures, consisting of doughnut-shaped vortices, provide fundamental insight into intricate nanoscale structures inside bulk magnets.

SourcePaul Scherrer Institute·JournalNature Physics·DateNov 30, 2020
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Twisting magnetization with light

Researchers created tiny magnetization patterns known as skyrmions faster using laser pulses, which can have implications for magnetic data processing and storage. The findings clarified how the topology of the magnetic system changes in this process, contributing to stability but also making creation difficult.

SourceForschungsverbund Berlin·JournalNature Materials·DateOct 5, 2020

Who stole the light?

A team of researchers has precisely recorded the dependence of resonant magnetic scattering intensity on x-ray intensity using a ferromagnetic domain sample. They found that the loss in scattered x-ray intensity is due to transient demagnetization, not stimulated emission. This clarification has important ramifications for future singl...

SourceForschungsverbund Berlin·JournalPhysical Review Letters·DateSep 18, 2020

New method to track ultrafast change of magnetic state

Researchers developed a precise method to measure ultrafast magnetization changes in materials by observing emitted terahertz radiation. The technique enabled the detection of an acoustically-driven ultrafast magnetization signal, confirming its accuracy and sensitivity.

SourceBielefeld University·JournalNature Communications·DateAug 25, 2020

Improved modelling of nuclear structure in francium aids searches for new physics

Scientists at the University of Queensland have improved the modeling of nuclear structure in francium atoms, allowing for more precise calculations of their magnetic moments. The new method enables uncertainties four times smaller than previous best values, which is crucial for testing fundamental physics theories.

SourceUniversity of Queensland·JournalPhysical Review Letters·DateAug 4, 2020

X-rays recount origin of oddball meteorites

Researchers at Berkeley Lab used Advanced Light Source to produce 3D reconstructions of magnetization patterns in two rare meteorite samples. The study reveals a parent body with both melted and unmelted parts, pointing to a large planetesimal with a molten metallic core.

SourceDOE/Lawrence Berkeley National Laboratory·JournalScience Advances·DateJul 27, 2020
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Toward a more energy-efficient spintronics

Researchers at Spintec Laboratory and CNRS/Thales Laboratory developed a non-magnetic system to detect spin information at low power. This breakthrough enables the creation of ferroelectricity-based spintronic devices that consume significantly less energy than traditional systems.

SourceCNRS·JournalNature·DateApr 22, 2020

Magnetoacoustic waves: Towards a new paradigm of on-chip communication

Magnetoacoustic waves have been directly observed and found to travel long distances with larger amplitudes than expected. The findings open up new avenues for manipulation of these waves at room temperature, making them suitable for carrying information or driving small motors.

SourceUniversity of Barcelona·JournalPhysical Review Letters·DateApr 6, 2020

Watching magnetic nano 'tornadoes' in 3D

Researchers developed time-resolved magnetic laminography technique to visualize magnetic state in three dimensions. This allows for understanding of complex magnetization patterns and behavior, crucial for next-generation data storage and processing.

SourceUniversity of Cambridge·JournalNature Nanotechnology·DateFeb 24, 2020
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Time-resolved measurement in a memory device

The study achieved time-resolved measurement of a single magnetic memory event using a tunnel junction, revealing two stages: incubation and actual reversal. The researchers developed a strategy to minimize time fluctuations, reducing the total time for the reversal event to less than 0.3 nanoseconds.

SourceETH Zurich·JournalNature Nanotechnology·DateFeb 19, 2020

Light moves spins around

Scientists have discovered a new microscopic process called optical intersite spin transport (OISTR) that allows light to trigger a displacement of electrons between atoms, influencing the local magnetization. This process is accompanied by a leveling of electron reservoirs and can be tailored by bringing together specific types of atoms.

SourceForschungsverbund Berlin·JournalNature Communications·DateFeb 17, 2020

Moving domain walls induce losses in superconductor/ferromagnet hybrid systems

Researchers from the University of Jyväskylæ have discovered that moving domain walls in superconducting devices generate voltage, causing losses. This finding has significant implications for magnetic racetrack memory applications, which require low current resistance.

SourceUniversity of Jyväskylä - Jyväskylän yliopisto·JournalPhysical Review Letters·DateJan 6, 2020
Sky-Watcher EQ6-R Pro Equatorial Mount

Sky-Watcher EQ6-R Pro Equatorial Mount provides precise tracking capacity for deep-sky imaging rigs during long astrophotography sessions.

A torque on conventional magnetic wisdom

Researchers observe anomalous spin-orbit torque in ferromagnetic films without spin-orbit coupling, indicating a new competition between spin alignment and magnetization. This finding has implications for energy-efficient magnetic-memory technology.

SourceUniversity of Illinois Grainger College of Engineering·JournalNature Nanotechnology·DateJul 22, 2019

Small currents for big gains in spintronics

Scientists at the University of Tokyo developed an efficient magnetization reversal component using gallium manganese arsenide, reducing current densities by one to two orders of magnitude compared to previous methods. This breakthrough aims to advance spintronics, a promising technology for low-power logic and memory devices.

SourceUniversity of Tokyo·JournalNature Communications·DateJun 13, 2019
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GoPro HERO13 Black

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Nanoparticles help realize 'spintronic' devices

Researchers have demonstrated a new way to perform functions essential to future computation at speeds trillions of times faster than current commercial devices. The team created a nanoscale spintronic semiconductor device that can partially switch between specific magnetic states in under a picosecond.

SourceUniversity of Tokyo·JournalApplied Physics Letters·DateMar 5, 2019

A new twist on a mesmerizing story

Researchers at ETH Zurich found that most angular momentum is transferred to the lattice during ultrafast demagnetization, twisting the sample as magnetization rapidly decreases. The discovery offers guidance for technological applications of ultrafast optical switching.

SourceETH Zurich Department of Physics·JournalNature·DateJan 14, 2019
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Magnetization in small components can now be filmed in the laboratory

Scientists at Johannes Gutenberg University Mainz developed a technique to visualize and film the high-speed switching processes of tiny magnetic structures. This method enables researchers to investigate magnetization behavior with sub-nanosecond time resolution, opening up new possibilities for optimizing magnetic components.

SourceJohannes Gutenberg Universitaet Mainz·JournalReview of Scientific Instruments·DateSep 11, 2018

Futuristic data storage

A new model of nanometric square material's changing magnetic state could be the basis for future ultrahigh density data storage. By controlling the interactions between individual nanomagnets, researchers aim to improve data storage in electronic and medical applications.

SourceSpringer·JournalThe European Physical Journal B·DateJun 19, 2018
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Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Unexpected effect could lead to lower-power memory, computing devices

Researchers at NIST and Johns Hopkins University discovered a zero-field switching effect that enables stable, non-volatile memory devices without magnetic fields. This breakthrough could lead to smaller, lower-power computing devices.

SourceNational Institute of Standards and Technology (NIST)·JournalPhysical Review Letters·DateMar 16, 2018