Journal
PHYSICAL REVIEW B
Volume 101, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.101.060408
Keywords
-
Funding
- EPSRC [EP/S030263/1, EP/S031081/1, EP/I004483, EP/K036408, EP/N032128/1]
- Horizon 2020 European Research Infrastructure project OpenDreamKit [676541]
- Taibah University
- EPSRC [EP/J021156/1, EP/K036408/1, EP/S031081/1, EP/N032128/1, EP/P022189/1, EP/P022189/2, EP/P020194/1, EP/S030263/1, EP/I004483/1, EP/K00512X/1, EP/M000923/1, EP/K013610/1] Funding Source: UKRI
Ask authors/readers for more resources
High coercivity magnets are an important resource for renewable energy, electric vehicles, and memory technologies. Most hard magnetic materials incorporate rare earths such as neodymium and samarium, but concerns about the environmental impact and supply stability of these materials are prompting research into alternatives. Here, we present a hybrid bilayer of cobalt and the nanocarbon molecule C-60 which exhibits significantly enhanced coercivity with minimal reduction in magnetization. We demonstrate how this anisotropy enhancing effect cannot be described by existing models of molecule-metal magnetic interfaces. We outline a form of anisotropy, arising from asymmetric magnetoelectric coupling in the metal-molecule interface. Because this phenomenon arises from pi-d hybrid orbitals, we propose calling this effect pi-anisotropy. While the critical temperature of this effect is currently limited by the rotational degree of freedom of the chosen molecule, C-60, we describe how surface functionalization would allow for the design of room-temperature, carbon-based hard magnetic films.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available