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Features in nonlinear electroconductivity of nanocontacts on the base of ferromagnetic metals (Co and Fe)
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2004 (English)In: Metallofizika i novejsie tehnologii, ISSN 1024-1809, Vol. 26, no 11, 1439-1446 p.Article in journal (Refereed) Published
Abstract [en]

For normal metal-ferromagnet (N-F) point contacts, a step-like change of the resistance is observed at reaching of the current density similar to 10(9) A/cm(2). This is observed only for the case, when electron flow is directed from the normal metal to the ferromagnetic one, and is connected with magnetization reversal in the microconstriction at high transport-current density. Increasing of a magnetic field leads to the shift of observed peculiarity into the higher-current region that testifies its magnetic origin. As shown, the observed effect, which is widely studied in the recent time in N-F sandwiches, has more common character and requires the presence only N-F boundary and high-current density. The increasing of the amplitude of the resistance peculiarity is observed at electromagnetic radiation with a frequency of 3.10(9) Hz that testifies stimulating influence of the HF-radiation on the dynamics of precessing spins in the contacts at issue.

Place, publisher, year, edition, pages
2004. Vol. 26, no 11, 1439-1446 p.
Keyword [en]
magnetic multilayer
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-24011ISI: 000227055100005OAI: oai:DiVA.org:kth-24011DiVA: diva2:342710
Note
QC 20100525 QC 20110915Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Korenivski, Vladislav

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