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89 Current news about the topic magnetic fields

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Magnetic effect without a magnet

Surprise in solid-state physics: The Hall effect, which normally requires magnetic fields, can also be generated in a completely different way – with extreme strength

23-Feb-2021

Electric current is deflected by a magnetic field – in conducting materials this leads to the so-called Hall effect. This effect is often used to measure magnetic fields. A surprising discovery has now been made at TU Wien, in collaboration with scientists from the Paul Scherrer Institute ...

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How to cool more efficiently

Scientists break new ground in future refrigeration

03-Dec-2020

In the journal Applied Physics Reviews, an international research team from the University of Barcelona, the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), and TU Darmstadt report on possibilities for implementing more efficient and environmentally friendly refrigeration processes. For this ...

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Nano-microscope gives first direct observation of the magnetic properties of 2D materials

Discovery means new class of materials and technologies

22-Sep-2020

Australian researchers and their colleagues from Russia and China have shown that it is possible to study the magnetic properties of ultrathin materials directly, via a new microscopy technique that opens the door to the discovery of more two-dimensional (2D) magnetic materials, with all sorts of ...

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A tiny instrument to measure the faintest magnetic fields

Applications in areas such as medicine, besides being used to research new materials

08-Sep-2020

Physicists at the University of Basel have developed a minuscule instrument able to detect extremely faint magnetic fields. At the heart of the superconducting quantum interference device are two atomically thin layers of graphene, which the researchers combined with boron nitride. Instruments ...

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Magnetic nanoparticles change their magnetic structure in a magnetic field

International research team studies the effects of magnetic fields on magnetic nanoparticles

28-Jul-2020

When ultrafine magnetic particles are exposed to an external magnetic field, their magnetic core grows in a previously unexpected way. This was observed by a team of scientists from the University of Cologne (UoC), Forschungszentrum Jülich and the Institut Laue-Langevin in Grenoble, France, by ...

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Not everything is ferromagnetic in high magnetic fields

12-Feb-2020

High magnetic fields have a potential to modify the microscopic arrangement of magnetic moments because they overcome interactions existing in zero field. Usually, high fields exceeding a certain critical value force the moments to align in the same direction as the field leading to ferromagnetic ...

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Super-strong magnetic supercrystals can assemble themselves

29-Oct-2019

Verner Håkonsen works with cubes so tiny that nearly 5 billion of them could fit on a pinhead. He cooks up the cubes in the Norwegian University of Science and Technology's (NTNU) NanoLab, in a weird-looking glass flask with three necks on the top using a mixture of chemicals and special ...

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Tomorrow's coolants of choice

Scientists assess the potential of magnetic-cooling materials

18-Sep-2019

Later during this century, around 2060, a paradigm shift in global energy consumption is expected: we will spend more energy for cooling than for heating. Meanwhile, the increasing penetration of cooling applications into our daily lives causes a rapidly growing ecological footprint. New ...

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World's smallest MRI performed on single atoms

Magnetic Resonance Imaging enables to scan the magnetic field of single atoms with unprecedented resolution

03-Jul-2019

Researchers at the Center for Quantum Nanoscience (QNS) within the Institute for Basic Science (IBS) at Ewha Womans University have made a major scientific breakthrough by performing the world's smallest magnetic resonance imaging (MRI). In an international collaboration with colleagues from the ...

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Fish-inspired material changes color using nanocolumns

22-Mar-2019

Inspired by the flashing colors of the neon tetra fish, researchers have developed a technique for changing the color of a material by manipulating the orientation of nanostructured columns in the material. "Neon tetras can control their brightly colored stripes by changing the angle of tiny ...

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