Results 41 to 50 of about 1,676 (174)

Natural remanent magnetization of the Napier Complex in Enderby Land,East Antarctica

open access: yesAntarctic Record, 1984
Paleomagnetic studies were performed with the oldest rocks reported (about 3800 m.y.), collected from the Napier Complex in East Antarctica. Five specimens have stable NRM against AF and thermal demagnetizations, but other five have unstable one.
Minoru Funaki
doaj   +1 more source

Discussion on the Local Magnetic Force between Reversely Magnetized Micro Metal Particles in the Microwave Sintering Process

open access: yesMetals, 2017
Synchrotron radiation computed tomography was applied to investigate Cu–Fe mixture microwave sintering in situ and to examine the magnetic force between reversely magnetized micro-metal particles in microwave sintering.
Yu Xiao   +4 more
doaj   +1 more source

Combined Magnetostratigraphy From Three Localities of the Rainstorm Member of the Johnnie Formation in California and Nevada, United States Calibrated by Cyclostratigraphy: A 13 R/Ma Reversal Frequency for the Ediacaran

open access: yesFrontiers in Earth Science, 2021
A combined magnetostratigraphy for the Rainstorm Member of the Ediacaran Johnnie Formation was constructed using the sediment accumulation rates determined by rock magnetic cyclostratigraphy for three localities of the Rainstorm Member to provide a high ...
Kenneth P. Kodama
doaj   +1 more source

Degradable Magnetic Composites from Recycled NdFeB Magnets for Soft Actuation and Sensing

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a degradable soft magnetic composite made from recycled NdFeB particles embedded in a gelatin‐based organogel. The material is processed into magnetic sensors and soft robotic components, which can later be dissolved in a green solvent to recover NdFeB magnetic particles.
Muhammad Bilal Khan   +14 more
wiley   +1 more source

Improved Post-Assembly Magnetization Performance of Spoke-Type PMSM Using a 5-Times Divided Magnetizer with Auxiliary Pole Winding

open access: yesMathematics
Due to the reinforcement of energy efficiency regulations and the pursuit of sustainable development goals, the demand for high-efficiency electric motors has been steadily increasing. Rare-earth permanent magnets such as neodymium (Nd) and samarium (Sm)
Seung-Heon Lee   +2 more
doaj   +1 more source

Significant inverse magnetocaloric effect induced by quantum criticality

open access: yesPhysical Review Research, 2021
The criticality-enhanced magnetocaloric effect (MCE) near a field-induced quantum critical point (QCP) in the spin systems constitutes a very promising and highly tunable alternative to conventional adiabatic demagnetization refrigeration.
Tao Liu   +8 more
doaj   +1 more source

A Self‐Healing Permanent Magnet Putty for Soft Robot Skins With Force Sensing and Functional Recovery

open access: yesAdvanced Robotics Research, EarlyView.
Permanent magnet putty (PMP) integrates high‐coercivity NdFeB particles with a dynamic polyborosiloxane–Ecoflex matrix, achieving rapid self‐healing (90% mechanical recovery in 10 s) and magnetic recovery within 20 min. With twice the sensitivity of commercial putties, PMP enables precise 5–30 N force detection and discrimination between pressing and ...
Ruotong Zhao   +5 more
wiley   +1 more source

A TES single-photon detector demonstrating high-energy-resolution, high efficiency, and ultra-low dark counts near 0.9 Tc [PDF]

open access: yesAPL Photonics
Transition-edge sensors (TESs) are among the most promising technologies for single-photon detection, offering high quantum efficiency, low dark count rates, and energy-resolving capabilities. However, optimal TES performance typically requires ultra-low
P. Z. Li   +9 more
doaj   +1 more source

Laser‐Induced Ultrafast Magnetic Phase Transition in 2D Van Der Waals Antiferromagnetic Heterostructures

open access: yesAdvanced Science, EarlyView.
In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Yang Wu   +5 more
wiley   +1 more source

Thresholding of the Elliott-Yafet spin-flip scattering in multi-sublattice magnets by the respective exchange energies

open access: yesScientific Reports, 2021
How different microscopic mechanisms of ultrafast spin dynamics coexist and interplay is not only relevant for the development of spintronics but also for the thorough description of physical systems out-of-equilibrium.
Artur Born   +7 more
doaj   +1 more source

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