ORCID Profile
0000-0002-9246-6398
Current Organisation
TU Darmstadt
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Springer Science and Business Media LLC
Date: 22-08-2017
DOI: 10.1557/JMR.2017.320
Publisher: Research Square Platform LLC
Date: 31-05-2023
DOI: 10.21203/RS.3.RS-2873882/V1
Abstract: Permanent magnets draw their properties from a complex interplay, across multiple length scales, of the composition and distribution of their constituting phases, that act as building blocks, each with their associated intrinsic properties 1 . Gaining a fundamental understanding of these interactions is hence key to decipher the origins of their magnetic performance 2 and facilitate the engineering of better-performing magnets, through unlocking the design of the “perfect defects” for ultimate pinning of magnetic domains 3 . Here, we deployed advanced multiscale microscopy and microanalysis on a bulk Sm 2 (CoFeCuZr) 17 pinning-type high-performance magnet with outstanding thermal and chemical stability 4 . Making use of regions with different chemical compositions, we showcase how both a change in the composition and distribution of copper, along with the atomic arrangements enforce the pinning of magnetic domains, as imaged by nanoscale magnetic induction mapping. Micromagnetic simulations bridge the scales to provide an understanding of how these peculiarities of micro- and nanostructure change the hard magnetic behaviour of Sm 2 (CoFeCuZr) 17 magnets. Unveiling the origins of the reduced coercivity allows us to propose an atomic-scale defect and chemistry manipulation strategy to define ways toward future hard magnets.
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 03-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0MH02033H
Abstract: Dislocations are mobile at low temperatures in surprisingly many ceramics but sintering minimizes their densities. Enabling local plasticity by engineering a high dislocation density is a way to combat short cracks and toughen ceramics.
Publisher: Elsevier BV
Date: 04-2018
No related grants have been discovered for Karsten Durst.