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25 April 2024

» arxiv » cond-mat/0606547

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Current-excited magnetization dynamics in narrow ferromagnetic wires
Yoshihiko Togawa ; Takashi Kimura ; Ken Harada ; Tetsuya Akashi ; Tsuyoshi Matsuda ; Akira Tonomura ; Yoshichika Otani ;
Date:	21 Jun 2006
Journal:	Jpn.J.Appl.Phys. 45 L683 (2006).
Subject:	Materials Science; Mesoscopic Systems and Quantum Hall Effect
Abstract:	We investigate the current-excited magnetization dynamics in a narrow ferromagnetic Permalloy wire by means of Lorentz microscopy, together with the results of simultaneous transport measurements. A detailed structural evolution of the magnetization is presented as a function of the applied current density. Local structural deformation, bidirectional displacement, and magnetization reversal are found below the Curie temperature with increasing the current density. We discuss probable mechanisms of observed features of the current-excited magnetization dynamics.
Source:	arXiv, cond-mat/0606547
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