Activation Energy Depending on the Thickness of the Ferromagnetic Layer

A. Adanlété Adjanoh^1, and R. Belhi²

¹Département de Physique, Faculté des Sciences et Techniques, Université de Kara, B.P : 404, Kara, Togo

²Département de Physique, Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis 1060, Tunisia

Cite this paper:
A. Adanlété Adjanoh and R. Belhi. Activation Energy Depending on the Thickness of the Ferromagnetic Layer. Journal of Materials Physics and Chemistry. 2018; 6(2):36-38. doi: 10.12691/jmpc-6-2-1

Abstract

We present the detailed study of activation energy E_a according to the thickness of the magnetic layer (t_Co=0.7,0.8 and 1nm). The study was carried out at room temperature by means of polar magneto-optical Kerr effect magnetometry (PMOKE) using a He–Ne laser (λ=633nm). We found that the activation field μ₀H_a, the coercive field μ₀H_C and the average activation energy E_a are weak for the sample with thickness t_Co = 1 nm.

Keywords:
time of demagnetization activation field activation energy activation volume

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