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Title: Enhanced capability in a gas aggregation source for magnetic nanoparticles
Authors: Iles, Gail N.
Baker, S.H.
Thornton, S.C.
Binns, C.
First Published: 22-Jan-2009
Publisher: American Institute of Physics (AIP)
Citation: Journal of Applied Physics, 2009, 105 (2), pp. 4306-4312 (7)
Abstract: We describe the characterization of a high-temperature (2000 K) thermal gas aggregation source that is ultrahigh vacuum compatible and can cleanly deposit transition metal clusters with partial pressures of contaminants in the 10(-11) mbar range allowing codeposition with highly reactive matrices. In particular, we investigate the effect of varying (i) the bath gas pressure and composition on the size distribution and flux of clusters produced and (ii) the position of the crucible within the source. The mass spectra of Fe clusters produced, recorded using a quadrupole filter, show that changing the operating conditions and configuration of the source allow a wide range of cluster sizes-3000-320 000 amu (similar to 50-6000 atoms for Fe or Co) to be produced. We demonstrate the cleanliness of the source by producing uncontaminated Fe clusters in rare-earth matrices.
DOI Link: 10.1063/1.3067761
ISSN: 0021-8979
eISSN: 1089-7550
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2009 American Institute of Physics. Deposited with reference to the publisher's archiving policy available from the SHERPA/RoMEO website. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics, 2009, 105 (2), pp. 4306-4312 and may be found at
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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