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Article

Activation Energy Depending on the Thickness of the Ferromagnetic Layer

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


Journal of Materials Physics and Chemistry. 2018, Vol. 6 No. 2, 36-38
DOI: 10.12691/jmpc-6-2-1
Copyright © 2018 Science and Education Publishing

Cite this paper:
A. Adanlété Adjanoh, 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.

Correspondence to: A.  Adanlété Adjanoh, Département de Physique, Faculté des Sciences et Techniques, Université de Kara, B.P : 404, Kara, Togo. Email: adanlete.assiongbon@gmail.com

Abstract

We present the detailed study of activation energy Ea according to the thickness of the magnetic layer (tCo=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 μ0Ha, the coercive field μ0HC and the average activation energy Ea are weak for the sample with thickness tCo = 1 nm.

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