Concentrated anisotropic magnetization for high sensitivity of optical pickup actuator

To improve the driving sensitivity of an optical pickup actuator for high density and high speed, we present a new magnetizing method-concentrated anisotropic magnetization for Nd-Fe-B sintered magnets. The electromagnetic field analysis applying 3-D FEM was performed and several samples were actual...

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Veröffentlicht in:	IEEE transactions on magnetics 1999-05, Vol.35 (3), p.1861-1864
Hauptverfasser:	CHOI, I.-H, HONG, S.-P, CHUNG, W.-E, KIM, Y.-J, LEE, M.-H, KIM, J.-Y
Format:	Artikel
Sprache:	eng
Schlagworte:	Actuators Anisotropic magnetoresistance Anisotropy Applied sciences Computer simulation Electromagnetic fields Electronic equipment and fabrication. Passive components, printed wiring boards, connectics Electronics Exact sciences and technology Ferrous alloys Finite element method Geometrical optics High speed optical techniques Inductors and coils wiring Magnetic anisotropy Magnetization Magnets Mathematical models Optical pickups Optical sensors Perpendicular magnetic anisotropy
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Beschreibung
Zusammenfassung:	To improve the driving sensitivity of an optical pickup actuator for high density and high speed, we present a new magnetizing method-concentrated anisotropic magnetization for Nd-Fe-B sintered magnets. The electromagnetic field analysis applying 3-D FEM was performed and several samples were actually tested. From comparing simulated data with experimental results, we verified the accuracy of the simulation and the superiority of the presented method.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/20.767396