Nanoscale Surface Deformation of the Granular Со$_{25}$Ag$_{75}$ Films

O. Yu. Gorobets$^{1,2}$, Yu. I. Yakymenko$^{2}$, A. F. Kravets$^{1}$, O. M. Brukva$^{2}$, V. N. Zakharchenko$^{2}$, S. V. Mikhalko$^{1}$, I. A. Sizon$^{2}$

$^{1}$Institute of Magnetism under NAS and MES of Ukraine, 36b Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
$^{2}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine

Received: 02.09.2015. Download: PDF

Granular nanostructure Со$_{25}$Ag$_{75}$ films are analysed by means of the scanning tunnelling microscopy (STM) method. The phenomenon of giant film nanodeformation is detected with the 10% change of average height during the initial magnetization of the sample and with the 2% change after 8 days of relaxation during secondary magnetic field action. The changing of the shape of nanoscale granules and their displacement in the surface of film are observed during the process of nanodeformation under the action of magnetic field and in the aftereffect processes.

Key words: thin CoAg film, magnetostriction, magnetic aftereffects, magnetic deformation, nanodeformation.



PACS: 68.37.Ef, 75.50.Ss, 75.60.Lr, 75.70.Ak, 75.70.Rf, 75.80.+q, 85.70.Kh

Citation: O. Yu. Gorobets, Yu. I. Yakymenko, A. F. Kravets, O. M. Brukva, V. N. Zakharchenko, S. V. Mikhalko, and I. A. Sizon, Nanoscale Surface Deformation of the Granular Со$_{25}$Ag$_{75}$ Films, Metallofiz. Noveishie Tekhnol., 37, No. 11: 1477—1486 (2015)

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