| Nanocap arrays of granular CoCrPt:SiO2 films on silica particles: tailoring of the magnetic properties by Co+ irradiation. | |
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MedLine Citation:
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PMID: 20798462 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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An approach for tailoring the magnetic properties by ion irradiation of granular perpendicular CoCrPt:SiO(2) films grown on silica particles with sizes down to 10 nm was investigated. The as-prepared samples reveal an intriguing scaling dependence of the coercive field and remnant magnetization: both parameters are found to decrease with decreasing particle size. However, Co(+) irradiation at a low fluence of 0.5 x 10(14) cm(-2) already results in an opposite scaling behavior. It is assumed that this modification is due to the enhancement of the intergranular magnetic exchange coupling of the granular CoCrPt:SiO(2) film initiated by Co(+) irradiation resulting in a modified reversal behavior. Further increase of the irradiation fluence beyond 1.6 x 10(14) ions cm(-2) leads to a degradation of the magnetic layer properties, lowering the remnant magnetization and the coercive field in the easy-axis direction. Moreover, the local magnetic properties of the samples were analyzed by magnetic force microscopy revealing magnetic multi-domain cap structures. |
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Authors:
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P Krone; C Brombacher; D Makarov; K Lenz; D Ball; F Springer; H Rohrmann; J Fassbender; M Albrecht |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-08-27 |
Journal Detail:
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Title: Nanotechnology Volume: 21 ISSN: 1361-6528 ISO Abbreviation: Nanotechnology Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-27 Completed Date: 2010-12-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101241272 Medline TA: Nanotechnology Country: England |
Other Details:
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Languages: eng Pagination: 385703 Citation Subset: - |
Affiliation:
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Institute of Physics, Chemnitz University of Technology, Chemnitz, Germany. philipp.krone@physik.tu-chemnitz.de |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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