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Zeitschriftenartikel:

O. Ertl, T. Schrefl, D. Süss, M. Schabes:
"Influence of the Gilbert damping constant on the flux rise time of write head fields";
Journal of Magnetism and Magnetic Materials, 290-291 (2005), S. 518 - 521.



Kurzfassung englisch:
Magnetic recording at fast data rates requires write heads with rapid rise times of the magnetic flux during the write process. We present three-dimensional (3D) micromagnetic finite element calculations of an entire ring head including 3D coil geometry during the writing of magnetic bits in granular media. The simulations demonstrate how input current profiles translate into magnetization processes in the head and which in turn generate the write head field. The flux rise time significantly depends on the Gilbert damping constant of the head material. Low damping causes incoherent magnetization processes, leading to long rise times and low head fields. High damping leads to coherent reversal of the magnetization in the head. As a consequence, the gap region can be quickly saturated which causes high head fields with short rise times.


Online-Bibliotheks-Katalog der TU Wien:
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05938185

Elektronische Version der Publikation:
http://dx.doi.org/10.1016/j.jmmm.2004.11.516


Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.