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Title The Study of Anisotropy and Domain Condition of Permalloy Thin Films
Authors Morozov, A.V.
Alekseev, V.P.
Naumov, V.A.
Morozov, V.V.
ORCID
Keywords Permalloy thin films
Magnetometer
Hysteretic loop
Coercive force
Single-domain particles
Superparamagnetic state
Type Article
Date of Issue 2013
URI http://essuir.sumdu.edu.ua/handle/123456789/33620
Publisher Сумський державний університет
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Citation A.V. Morozov, V.P. Alekseev, V.A. Naumov, et al., J. Nano- Electron. Phys. 5 No 4, 04016 (2013)
Abstract Hysteretic Loops, 1,5; 3,0; 4,5; 6 and 10 nm in thickness, obtained by magnetron sputtering of Ni81Fe19 alloy, were measured by means of vibration magnetometer. It has been detected that by increasing the film thickness from 3 to 10 nm coercive force (HC) increases as well. In the direction perpendicular to the axis of easy magnetization the loop form considerably differs from the right-angled one, which is caused by amplitude dispersion of anisotropy. The films, derived in scattered magnetic field of the Earth, are by magnetic parameter isotropic. The results of atomic force microscope investigation indicate to the granular structure of films and confirms the presence of non-magnetized areas among the examined films. The critical thickness at which permalloy films pass from multi-domain to single-domain state was 10 nm. Estimation of the critical thickness of the transition from single-domain state to superparamagnetic led to the values of 1.5-2 nm. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/33620
Appears in Collections: Журнал нано- та електронної фізики (Journal of nano- and electronic physics)

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