Exploring the magnetization dynamics, damping and anisotropy in engineered CoFeB/(Ag, Pt) multilayer films grown onto amorphous substrate

被引：8

作者：

Correa, M. A. ^{[1
]}

Santos, J. G. S. ^{[1
]}

Silva, B. G. ^{[2
]}

Raza, S. A. ^{[2
]}

Della Pace, R. D. ^{[1
]}

Chesman, C. ^{[1
]}

Sommer, R. L. ^{[2
]}

Bohn, F. ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Norte, Dept Fis, BR-59078900 Natal, RN, Brazil

[2] Ctr Brasileiro Pesquisas Fis, Rua Dr Xavier Sigaud 150, BR-22290180 Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 485卷

关键词：

CoFeB alloy; Amorphous substrate; Magnetization dynamics; Damping parameter;

D O I：

10.1016/j.jmmm.2019.04.072

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the magnetization dynamics in CoFeB/(Ag, Pt) multilayer films grown onto amorphous substrate engineered to have in-plane magnetic anisotropy and distinct effective damping parameter. We go beyond quasi-static magnetic properties and characterize the dynamic magnetic response by employing ferromagnetic resonance and magnetoimpedance measurements. The link between magnetic features and dynamic magnetic behavior allows us to identify the role of the effective damping parameter and of the magnetic anisotropy on the magnetoimpedance effect in multilayer films. In addition, we consider a theoretical approach to interpret the experimental data and also predict the magnetization dynamics in wider ranges of the explored parameters. From our results, we provide insights to tune the damping parameter and magnetic anisotropy in engineered multilayer films grown onto amorphous substrates.

引用

页码：75 / 81

页数：7

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