Gareev, R. R., Buchmeier, M., Kiessling, Matthias, Woltersdorf, Georg and Back, Christian H.
(2011)
Anomalous antiferromagnetic coupling in Fe/Si/Fe structures with Co "dusting''.
AIP Advances 1 (4), 042155.
Date of publication of this fulltext: 07 Dec 2011 08:41at publisher (via DOI)
Other URL: http://link.aip.org/link/?ADV/1/042155/1
Abstract
We report on anomalous antiferromagnetic coupling in Fe/Si/Fe epitaxial structures with interfacial cobalt “dusting”. Antiferromagnetic coupling exceeds 75 μJ/m2 for a 2.0 nm-thick Si spacer and is still detectable for a 2.3 nm-thick spacer at room temperature. From room temperature to T**∼150K the magnetization follows Bloch's law and the coupling shows metallic-type behaviour; for lower ...
Abstract
We report on anomalous antiferromagnetic coupling in Fe/Si/Fe epitaxial structures with interfacial cobalt “dusting”. Antiferromagnetic coupling exceeds 75 μJ/m2 for a 2.0 nm-thick Si spacer and is still detectable for a 2.3 nm-thick spacer at room temperature. From room temperature to T**∼150K the magnetization follows Bloch's law and the coupling shows metallic-type behaviour; for lower temperatures the coupling is of insulating type. Below T*∼50K an additional magnetic signal arises and the coupling becomes metallic-type again. We relate the observed features to the formation of inter-diffused magnetic FeCo-silicides with a Curie temperature close to 50 K.
Export bibliographical data
Item type: | Article |
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Date: | 2011 |
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Institutions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
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Identification Number: | Value | Type |
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10.1063/1.3665914 | DOI |
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Classification: | Notation | Type |
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75.70.Cn | PACS | 68.35.Fx | PACS | 75.30.Kz | PACS | 75.60.Ej | PACS |
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Keywords: | antiferromagnetic materials; chemical interdiffusion; cobalt; Curie temperature; elemental semiconductors; iron; magnetic multilayers; magnetisation; metal-semiconductor-metal structures; silicon |
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Dewey Decimal Classification: | 500 Science > 530 Physics |
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Status: | Published |
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Refereed: | Yes, this version has been refereed |
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Created at the University of Regensburg: | Partially |
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Item ID: | 22893 |
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