Results 1 to 10 of about 295 (125)

Single Particle Multipole Expansions From Micromagnetic Tomography [PDF]

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Micromagnetic tomography aims at reconstructing large numbers of individual magnetizations of magnetic particles from combining high‐resolution magnetic scanning techniques with micro X‐ray computed tomography (microCT).
David Cortés‐Ortuño   +2 more
doaj   +11 more sources

A First‐Order Statistical Exploration of the Mathematical Limits of Micromagnetic Tomography [PDF]

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The recently developed Micromagnetic Tomography (MMT) technique combines advances in high resolution scanning magnetometry and micro X‐ray computed tomography.
Frenk Out   +4 more
doaj   +8 more sources

Unraveling the Magnetic Signal of Individual Grains in a Hawaiian Lava Using Micromagnetic Tomography [PDF]

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Micromagnetic Tomography (MMT) is a new technique that allows the determination of magnetic moments of individual grains in volcanic rocks. Current MMT studies either showed that it is possible to obtain magnetic moments of relatively small numbers of ...
Martha E. Kosters   +4 more
doaj   +6 more sources

Micromagnetic Tomography for Paleomagnetism and Rock‐Magnetism [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2021
Our understanding of the past behavior of the geomagnetic field arises from magnetic signals stored in geological materials, e.g., (volcanic) rocks. Bulk rock samples, however, often contain magnetic grains that differ in chemistry, size, and shape; some
Lennart V De Groot   +2 more
exaly   +14 more sources

Mapping Magnetic Signals of Individual Magnetite Grains to Their Internal Magnetic Configurations Using Micromagnetic Models [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2022
Micromagnetic tomography (MMT) is a technique that combines X-ray micro computed tomography and scanning magnetometry data to obtain information about the magnetic potential of individual grains embedded in a sample.
David Cortés-Ortuño   +2 more
exaly   +6 more sources

Most frequently asked questions about the coercivity of Nd-Fe-B permanent magnets [PDF]

open access: yesScience and Technology of Advanced Materials, 2021
Physically, the coercivity of permanent magnets should scale with the anisotropy field of ferromagnetic compounds, HA; however, the typical coercivity values of commercial polycrystalline sintered magnets are only ~0.2 HA, which is known as Brown’s ...
Jiangnan Li   +4 more
doaj   +2 more sources

The Importance of Sample‐to‐Sensor Distance in Quantitative Micro(Paleo‐)Magnetic Analysis

open access: yesGeochemistry, Geophysics, Geosystems
Information on the past of Earth's magnetic field can be retrieved from magnetic grains in rock samples. Micromagnetic Tomography (MMT) is a recently developed method that uses magnetic surface scans from a Quantum Diamond Microscope (QDM) combined with ...
Rosa A. deBoer   +4 more
doaj   +2 more sources

Field tunable three-dimensional magnetic nanotextures in cobalt-nickel nanowires

open access: yesPhysical Review Research, 2021
Cylindrical magnetic nanowires with large transversal magnetocrystalline anisotropy have been shown to sustain nontrivial magnetic configurations resulting from the interplay of spatial confinement, exchange, and anisotropies.
I. M. Andersen   +10 more
doaj   +1 more source

Improving co-registration of geoscientific imaging datasets with micro-sized marker structures on rock samples [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems
Polished geological samples are frequently used in geoscientific research to investigate the chemical and physical characteristics of rocks. A broad range of imaging techniques is available to analyze such samples, but when combining datasets from ...
R. A. de Boer   +2 more
doaj   +1 more source

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