Results 101 to 110 of about 1,042,533 (119)

Magnetic analysis of individual iron oxide grains; application of Micromagnetic Tomography to a natural sample.

2023
The magnetic information stored in volcanic rocks is a valuable archive of the history of the behavior of the Earth’s magnetic field. Micromagnetic Tomography (MMT) allows to determine magnetic moments of individual iron-oxide grains in rocks. Theoretically this enables us to separate contributions from non-ideal recorders and ideal recorders,
Martha Kosters, Rosa de Boer, Frenk Out, David Cortes Ortuno, Michael Volk, Lennart V. de Groot   +5 more
openaire   +1 more source

Nanocrystalline Sm-based 1:12 magnets

, 2020
Recently 1:12 magnets of Sm-(Fe,V) have shown promising coercivities and the potential to be alternative rare-earth-lean permanent magnets. In this work, we investigated the effects of partial substitution of Cu, Mo and Ti for V in the magnets prepared ...
A. M. Schönhöbel, R. Madugundo, J. Barandiaran, G. Hadjipanayis, D. Palanisamy, T. Schwarz, B. Gault, D. Raabe, K. Skokov, O. Gutfleisch, J. Fischbacher, T. Schrefl   +11 more
semanticscholar   +1 more source

Attractive-domain-wall-pinning controlled Sm-Co magnets overcome the coercivity-remanence trade-off

Acta Materialia, 2019
Traditional approaches for increasing the intrinsic coercivity of magnets typically come at the expense of remanence, a dilemma known as intrinsic coercivity-remanence trade-off, leading to a substantial reduction of maximum energy product.
Hansheng Chen, Yunqiao Wang, Yin Yao, Jiangtao Qu, Fan Yun, Yuqing Li, S. Ringer, M. Yue, R. Zheng   +8 more
semanticscholar   +1 more source

Quantifying the nucleation effect of correlated matrix grains in sintered Nd-Fe-B permanent magnets

, 2020
The long-standing issue-the ferromagnetic coupling of adjacent Nd2Fe14B matrix grains across grain boundaries severely impedes further coercivity enhancement of sintered Nd-Fe-B permanent magnets.
Hansheng Chen, Yin Yao, Fan Yun, Jiangtao Qu, Yingfei Li, Zhenxiang Cheng, Zhixiao Ye, S. Ringer, R. Zheng   +8 more
semanticscholar   +1 more source

The Potential of the Quantum Diamond Microscope and Micromagnetic Tomography for Paleomagnetic Measurements

The Quantum Diamond Microscope holds the potential to revolutionize our field of research. It enables measurements on micrometer scale, going beyond the measurements on bulk rocks that we as a field of research have been using so far. An inherent limitation of QDM observations, however, is that it measures magnetic flux in one direction, usually ...
Lennart de Groot, Frenk Out, Rosa de Boer, Martha Kosters, Ge Bian, David Cortés-Ortuño, Karl Fabian   +6 more
openaire   +1 more source

Micromagnetic Tomography applied to natural samples: first steps towards deriving rock magnetic and paleomagnetic data from subsets of magnetic grains in lavas

2019
Our understanding of the behavior of the geomagnetic field arises from magnetic signals stored in geological materials, e.g. lavas. Almost all experiments to determine the past state of the Earth's magnetic field use bulk samples (typically 1 - 10 cc) and measure their magnetic moment after series of laboratory treatments.
L.V. de Groot (Lennart), A. Béguin (Annemarieke), K. Fabian (Karl), R.R. Fu (Roger), R.J. Harrison (Richard), C.M.L. Jansen (Chloë), A. Barnhoorn (Auke), T. van Leeuwen (Tristan), P. Reith (Pim), H. Hilgenkamp (Hans)   +9 more
openaire   +2 more sources

Micromagnetic Simulations of Fe and Ni Nanodot Arrays Surrounded by Magnetic or Non-Magnetic Matrices

Nanomaterials, 2021
Andrea Ehrmann, Ehrmann Andrea
exaly  

Microstructure and mechanical properties evaluation of automotive plate steel based on micromagnetic NDT technologies

Measurement: Journal of the International Measurement Confederation, 2022
Hongwei Sheng
exaly  

Brain Mapping: The Methods

, 2002
A. Toga, J. Mazziotta
semanticscholar   +1 more source

16 – Neuroanatomical Micromagnetic Resonance Imaging

, 2002
P. Narasimhan, R. Jacobs
semanticscholar   +1 more source