Gong, Qihua ; Yi, Min ; Evans, Richard F. L. ; Gutfleisch, Oliver ; Xu, Bai-Xiang (2020):
Anisotropic exchange in Nd–Fe–B permanent magnets.
In: Materials Research Letters, 8 (3), pp. 89-96. Taylor & Francis, ISSN 2166-3831,
DOI: 10.25534/tuprints-00011409,
[Article]
|
Text
Xu-Anisotropic exchange in Nd Fe B permanent magnets.pdf Copyright Information: CC-BY-NC 4.0 International - Creative Commons, Attribution NonCommercial. Download (2MB) | Preview |
Item Type: | Article |
---|---|
Origin: | Secondary publication via sponsored Golden Open Access |
Title: | Anisotropic exchange in Nd–Fe–B permanent magnets |
Language: | English |
Abstract: | The exchange is critical for designing high-performance Nd–Fe–B permanent magnets. Here we demonstrate through multiscale simulations that the exchange in Nd–Fe–B magnets, including bulk exchange stiffness (Ae) in Nd2Fe14B phase and interface exchange coupling strength (Jint) between Nd2Fe14B and grain boundary (GB), is strongly anisotropic. Ae is larger along crystallographic a/b axis than along c axis. Even when the GB FexNd1–x has the same composition, Jint for (100) interface is much higher than that for (001) interface. The discovered anisotropic exchange is shown to have profound influence on the coercivity. These findings enable more freedom in designing Nd–Fe–B magnets by tuning exchange. |
Journal or Publication Title: | Materials Research Letters |
Volume of the journal: | 8 |
Issue Number: | 3 |
Place of Publication: | Darmstadt |
Publisher: | Taylor & Francis |
Classification DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik |
Divisions: | DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue |
Date Deposited: | 30 Jan 2020 11:22 |
Last Modified: | 24 Jun 2022 18:01 |
DOI: | 10.25534/tuprints-00011409 |
URL / URN: | https://doi.org/10.1080/21663831.2019.1702116 |
URN: | urn:nbn:de:tuda-tuprints-114090 |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/11409 |
PPN: | |
Export: |
![]() |
View Item |