bei Google ScholarTitelangaben
Balasubramanian, Balamurugan ; Zhao, Xin ; Valloppilly, Shah R. ; Beniwal, Sumit ; Skomski, Ralph ; Sarella, Anandakumar ; Jin, Yunlong ; Li, Xingzhong ; Xu, Xiaoshan ; Cao, Huibo ; Wang, Haohan ; Enders, Axel ; Wang, Cai-Zhuang ; Ho, Kai-Ming ; Sellmyer, David J.:
Magnetism of new metastable cobalt-nitride compounds.
In: Nanoscale.
Bd. 10
(2018)
Heft 27
.
- S. 13011-13021.
ISSN 2040-3372
DOI: https://doi.org/10.1039/c8nr02105h
Abstract
The search for new magnetic materials with high magnetization and magnetocrystalline anisotropy is important for a wide range of applications including information and energy processing. There is only a limited number of naturally occurring magnetic compounds that are suitable. This situation stimulates an exploration of new phases that occur far from thermal-equilibrium conditions, but their stabilization is generally inhibited due to high positive formation energies. Here a nanocluster-deposition method has enabled the discovery of a set of new non-equilibrium Co–N intermetallic compounds. The experimental search was assisted by computational methods including adaptive-genetic-algorithm and electronic-structure calculations. Conventional wisdom is that the interstitial or substitutional solubility of N in Co is much lower than that in Fe and that N in Co in equilibrium alloys does not produce materials with significant magnetization and anisotropy. By contrast, our experiments identify new Co–N compounds with favorable magnetic properties including hexagonal Co3N nanoparticles with a high saturation magnetic polarization (Js = 1.28 T or 12.8 kG) and an appreciable uniaxial magnetocrystalline anisotropy (K1 = 1.01 MJ m−3 or 10.1 Mergs per cm3). This research provides a pathway for uncovering new magnetic compounds with computational efficiency beyond the existing materials database, which is significant for future technologies.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik XI - Funktionelle Nanostrukturen Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik XI - Funktionelle Nanostrukturen > Lehrstuhl Experimentalphysik XI - Funktionelle Nanostrukturen - Univ.-Prof. Dr. Axel Enders Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 11 Okt 2019 06:22 |
| Letzte Änderung: | 11 Okt 2019 06:22 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/52719 |