Giant magnetorefractive effect in magnetic granular CoFe-MgF alloys View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2003-05

AUTHORS

A. Granovskii, V. Gushchin, I. Bykov, A. Kozlov, N. Kobayashi, S. Ohnuma, T. Masumoto, M. Inoue

ABSTRACT

This paper reports on an IR study (5–20 µm) of the dispersion and field dependences of the magnetorefractive effect in granular CoFe-MgF (metal-insulator) systems, which exhibit, in compositions close to the percolation threshold, a tunneling magnetoresistance of 7.5% in a field of 1700 Oe. The change in the reflectivity of p-polarized light under magnetization in the IR spectral region 5–7 µm is of the order of 0.1%, while in the 10-to 12-µm region, this change, reaches record-high values of 1.2–1.5%, which exceed the usual odd and even magnetooptic reflectivities in the IR range by two orders of magnitude. The magnetorefractive effect in magnetic systems with tunneling conduction originates from spin-dependent high-frequency tunneling. More... »

PAGES

911-913

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/1.1575334

DOI

http://dx.doi.org/10.1134/1.1575334

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1005315323


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