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Robust Ferromagnetism of Chromium Nanoparticles Formed in Superfluid Helium

DOI: 10.1002/adma.201604277 DOI Help

Authors: Shengfu Yang (Department of Chemistry; University of Leicester) , Cheng Feng (Department of Chemistry; University of Leicester) , Daniel Spence (Department of Chemistry; University of Leicester) , Aula M. A. A. Al Hindawi (Department of Chemistry; University of Leicester) , Elspeth Latimer (Department of Chemistry; University of Leicester) , Andrew M. Ellis (Department of Chemistry; University of Leicester) , Chris Binns (Department of Physics and Astronomy, University of Leicester) , Davide Peddis (Institute of Matter Structure, National Research Council (CNR)) , Sarnjeet S. Dhesi (Diamond Light Source) , Liying Zhang (School of Electronics, Information and Electrical Engineering, Shanghai Jiaotong University) , Yafei Zhang (School of Electronics, Information and Electrical Engineering, Shanghai Jiaotong University) , Kalliopi N. Trohidou (Institute of Nanoscience and Nanotechnology, NCSR Demokritos) , Marianna Vasilakaki (Institute of Nanoscience and Nanotechnology, NCSR Demokritos) , Nikolaos Ntallis (Institute of Nanoscience and Nanotechnology, NCSR Demokritos; Aristotle University) , Ian Maclaren (University of Glasgow) , Frank M. F. De Groot (Utrecht University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Advanced Materials

State: Published (Approved)
Published: October 2016
Diamond Proposal Number(s): 11485

Open Access Open Access

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.

Journal Keywords: chromium nanoparticles; ferromagnetism; Monte Carlo simulations; superfluid helium droplets; X-ray circular dichroism (XMCD)

Subject Areas: Materials, Physics


Instruments: I06-Nanoscience

Documents:
Yang_et_al-2016-Advanced_Materials.pdf