Hacker NewsA Guide to Magnetizing N48 Magnets in Ansys Maxwell
#HackerNews #Magnetization #Guide #AnsysMaxwell #N48Magnets #EngineeringTutorial
tomsharpIn 1915, Alfred Lauck Parson improved the Bohr model of the atom and defined his own unit of magnetization. #Poetry #Science #History #QuantumMechanics #Magnetization #Twort #Parson (https://sharpgiving.com/thebookofscience/items/p1915c.html)
1913: Bohr magneton - The book of science - In 1913, Niels Bohr based the quantum unit of magnetization on the Planck constant. #Poetry #Science #History #Electromagnetism #Magnetization #Bohr (https://sharpgiving.com/thebookofscience/items/p1913f.html)
In 1911, Pierre Weiss experimentally derived a value for the unit of magnetization. #Poetry #Science #History #Electromagnetism #Magnetization #Weiss (https://sharpgiving.com/thebookofscience/items/p1911c.html)
katch wreck"The film was selectively #crystallized using a continuous-wave #laser, & the transmissivity, optical constants, electronic binding states, magnetic properties, & #magnetooptical properties of the fabricated Ce:YIG films were measured. A single Ce:YIG phase was observed using X-ray diffraction, & the film's #magnetization was comparable to that of Ce:YIG prepared by heater annealing. #Faraday rotation angles of 0.50°/μm & −0.25°/μm were obtained"
Scientific FrontlineScientists of the Ural Federal University have described the processes of #magnetization reversal of #nanocrystalline alloys used as raw materials for 3D printing of #magnetic systems.
#MaterialScience #Nanotechnology #Physics #sflorg
https://www.sflorg.com/2023/12/ms12132301.html
#MaterialScience #Nanotechnology #Physics #sflorg
https://www.sflorg.com/2023/12/ms12132301.html
HZDRResearchers @HZDR & Laserinstitut Hochschule Mittweida teamed up to dive deeper into the #magnetization of a certain iron alloy with ultrashort #laser pulses, which they now could show in another material – good for potential application prospects.
▶️ https://www.hzdr.de/presse/magnet_per_laser
Image: HZDR/Sander Münster
Magnetization by laser pulse: Research team identifies new details of a promising phenomenon - Helmholtz-Zentrum Dresden-Rossendorf, HZDR
HZDR Press Release of December 7, 2023: To magnetize an iron nail, one simply has to stroke its surface several times with a bar magnet. Yet, there is a much more unusual method: A team led by the HZDR discovered some time ago that a certain iron alloy can be magnetized with ultrashort laser pulses. The researchers have now teamed up with the Laserinstitut Hochschule Mittweida (LHM) to investigate this process further. They discovered that the phenomenon also occurs with a different class of materials – which significantly broadens potential application prospects. The working group presents its findings in the scientific journal Advanced Functional Materials (DOI: 10.1002/adfm.202311951).
MPSD🧲 Now in npj Computational Materials: 'Attosecond magnetization dynamics in non-magnetic materials driven by intense femtosecond lasers' - a study by Ofer Neufeld and members of our Theory Department. They show that fast electron dynamics in bismuthumane (BiH) can be converted to #attosecond magnetism and predict a magnetic response at record speed. Such processes could be important for future memory storage devices.
Attosecond magnetization dynamics in non-magnetic materials driven by intense femtosecond lasers - npj Computational Materials
Irradiating solids with ultrashort laser pulses is known to initiate femtosecond timescale magnetization dynamics. However, sub-femtosecond spin dynamics have not yet been observed or predicted. Here, we explore ultrafast light-driven spin dynamics in a highly nonresonant strong-field regime. Through state-of-the-art ab initio calculations, we predict that a nonmagnetic material can transiently transform into a magnetic one via dynamical extremely nonlinear spin-flipping processes, which occur on attosecond timescales and are mediated by cascaded multi-photon and spin–orbit interactions. These are nonperturbative nonresonant analogs to the inverse Faraday effect, allowing the magnetization to evolve in very high harmonics of the laser frequency (e.g. here up to the 42nd, oscillating at ~100 attoseconds), and providing control over the speed of magnetization by tuning the laser power and wavelength. Remarkably, we show that even for linearly polarized driving, where one does not intuitively expect the onset of an induced magnetization, the magnetization transiently oscillates as the system interacts with light. This response is enabled by transverse light-driven currents in the solid, and typically occurs on timescales of ~500 attoseconds (with the slower femtosecond response suppressed). An experimental setup capable of measuring these dynamics through pump–probe transient absorption spectroscopy is simulated. Our results pave the way for attosecond regimes of manipulation of magnetism.