Results 11 to 20 of about 541,609 (355)

Magnetic Field of a Permanent Magnet [PDF]

open access: yesarXiv, 2022
<p> For magnetic field calculations, cylindrical permanent magnets are often approximated as ideal, azimuthally symmetric solenoids. Despite the frequent usage of this approximation, research papers demonstrating the validity and limitations of this approach are scarcely available.
openaire   +3 more sources

Searching for Magnetic Monopoles with the Earth's Magnetic Field [PDF]

open access: yesPhys. Rev. Lett. 127, 101801 (2021), 2021
Magnetic monopoles have long been predicted in theory and could exist as a stable object in our universe. As they move around in galaxies, magnetic monopoles could be captured by astrophysical objects like stars and planets. Here, we provide a novel method to search for magnetic monopoles by detecting the monopole moment of the Earth's magnetic field ...
arxiv   +1 more source

Magnetically confined mountains on accreting neutron stars with multipole magnetic fields [PDF]

open access: yes, 2022
Magnetically confined mountains on accreting neutron stars are candidates for producing continuous gravitational waves. We formulate a magnetically confined mountain on a neutron star with strong multipole magnetic fields and obtain some sequences of numerical solutions.
arxiv   +1 more source

Superconducting Magnet System Concept with a Mechanical Energy Transfer in the Magnetic Field [PDF]

open access: yes, 2022
There is an interest to design superconducting magnet systems working in a persistent current mode. These systems continuously generate magnetic field with disconnected power source working like permanent magnet devices. In this paper proposed a magnet system concept based on the direct mechanical energy transfer in the magnetic field.
arxiv   +1 more source

Characterization of Permanent Magnet Magnetization [PDF]

open access: yesIEEE Transactions on Magnetics, 2017
The performances of electrical machines highly depend on the behavior of materials, such as steel, copper, and permanent magnet. This paper focuses on permanent magnets whose magnetization must be precisely known. Thus a non-destructive approach which includes a combination of experiments and inverse problem, using the magnetostatic moment method, is ...
Laure Arbenz   +4 more
openaire   +4 more sources

CHANGES IN THE MAGNETIC PROPERTIES OF MAGNETITE QUARTZITE OF THE INGULETSK DEPOSIT OF KRYVYI RIH BASIN IN THE ENRICHMENT PROCESS

open access: yesГеохімія техногенезу, 2022
For ores subject to magnetic separation, the magnetic properties of minerals and ores are the main determinants of the technological process of enrichment. Changes in the magnetic characteristics of minerals and ores during grinding affect the efficiency
V. Verkhovtsev   +5 more
doaj   +1 more source

An optimized magnet for magnetic refrigeration [PDF]

open access: yesJournal of Magnetism and Magnetic Materials, 2010
A magnet designed for use in a magnetic refrigeration device is presented. The magnet is designed by applying two general schemes for improving a magnet design to a concentric Halbach cylinder magnet design and dimensioning and segmenting this design in an optimum way followed by the construction of the actual magnet.
Bjørk, Rasmus   +4 more
openaire   +4 more sources

PEROVSKITES AND OTHER FRAMEWORK STRUCTURE CRYSTALLINE MATERIALS (BOOK' FIRST PAGES AND PREFACE)

open access: yesMaterials and Devices, 2021
Perovskites are among the most famous materials due to their exceptional properties: they present nearly all existing types of interesting properties, in particular as ferroics or multiferroics, they may be insulators, (super)conductors, or ...
Saint-Grégoire P., Smirnov M.
doaj   +1 more source

Preparation and characterization of natural melanin and its nanocomposite formed by copper doping

open access: yesNano Select, 2022
Natural Melanins have received great interest due to their structural, thermostability, electrochemical and paramagnetic properties. Pure melanin (Mel) is extracted from Nigella Sativa seeds and doped with Copper (Cu‐Mel) to form nano‐composite melanin ...
Ghada Khouqeer   +5 more
doaj   +1 more source

Magnetic Nanoparticle Sensors

open access: yesSensors, 2009
Many types of biosensors employ magnetic nanoparticles (diameter = 5–300 nm) or magnetic particles (diameter = 300–5,000 nm) which have been surface functionalized to recognize specific molecular targets.
Isaac Koh, Lee Josephson
doaj   +1 more source

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