Robust Ferromagnetism of Chromium Nanoparticles Formed in Superfluid Helium
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Publication date
2017-01-04
Authors
Yang, Shengfu
Feng, Cheng
Spence, Daniel
Al Hindawi, Aula M A A
Latimer, Elspeth
Ellis, Andrew M
Binns, Chris
Peddis, Davide
Dhesi, Sarnjeet S
Zhang, Liying
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Abstract
Chromium nanoparticles are formed using superfluid helium droplets as the nanoreactors, which are strongly ferromagnetic. The transition from antiferromagentism to ferromagnetism is attributed to atomic scale disorder in chromium nanoparticles, leading to abundant unbalanced surface spins. Theoretical modeling confirms a frustrated aggregation process in superfluid helium due to the antiferromagnetic nature of chromium.
Keywords
hromium nanoparticles ferromagnetism, Monte, Carlo simulations superfluid helium droplets, X‐ray circular dichroism (XMCD)
Citation
Yang, S, Feng, C, Spence, D, Al Hindawi, A M A A, Latimer, E, Ellis, A M, Binns, C, Peddis, D, Dhesi, S S, Zhang, L, Zhang, Y, Trohidou, K N, Vasilakaki, M, Ntallis, N, MacLaren, I & de Groot, F M F 2017, 'Robust Ferromagnetism of Chromium Nanoparticles Formed in Superfluid Helium', Advanced Materials, vol. 29, no. 1, 1604277. https://doi.org/10.1002/adma.201604277