Robust Ferromagnetism of Chromium Nanoparticles Formed in Superfluid Helium

Shengfu Yang; Cheng Feng; Daniel Spence; Aula M A A Al Hindawi; Elspeth Latimer; Andrew M Ellis; Chris Binns; Davide Peddis; Sarnjeet S Dhesi; Liying Zhang; Yafei Zhang; Kalliopi N Trohidou; Marianna Vasilakaki; Nikolaos Ntallis; Ian MacLaren; Frank M F de Groot

doi:10.1002/adma.201604277

Robust Ferromagnetism of Chromium Nanoparticles Formed in Superfluid Helium

Shengfu Yang, Cheng Feng, Daniel Spence, Aula M A A Al Hindawi, Elspeth Latimer, Andrew M Ellis, Chris Binns, Davide Peddis, Sarnjeet S Dhesi, Liying Zhang, Yafei Zhang, Kalliopi N Trohidou, Marianna Vasilakaki, Nikolaos Ntallis, Ian MacLaren, Frank M F de Groot

Research output: Contribution to journal › Article › Academic › peer-review

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.

Original language	English
Article number	1604277
Journal	Advanced Materials
Volume	29
Issue number	1
DOIs	https://doi.org/10.1002/adma.201604277
Publication status	Published - 4 Jan 2017

Keywords

hromium nanoparticles ferromagnetism
Monte
Carlo simulations superfluid helium droplets
X‐ray circular dichroism (XMCD)

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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, 29(1), Article 1604277. https://doi.org/10.1002/adma.201604277

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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)",

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AU - Feng, Cheng

AU - Spence, Daniel

AU - Al Hindawi, Aula M A A

AU - Latimer, Elspeth

AU - Ellis, Andrew M

AU - Binns, Chris

AU - Peddis, Davide

AU - Dhesi, Sarnjeet S

AU - Zhang, Liying

AU - Zhang, Yafei

AU - Trohidou, Kalliopi N

AU - Vasilakaki, Marianna

AU - Ntallis, Nikolaos

AU - MacLaren, Ian

AU - de Groot, Frank M F

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AB - 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.

KW - hromium nanoparticles ferromagnetism

KW - Monte

KW - Carlo simulations superfluid helium droplets

KW - X‐ray circular dichroism (XMCD)

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JO - Advanced Materials

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Robust Ferromagnetism of Chromium Nanoparticles Formed in Superfluid Helium

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Keywords

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