Formation of an anisotropy lattice in Co/Pt multilayers by direct laser interference patterning

Aliekber Aktag, Steven Michalski, Lanping Yue, Roger D. Kirby, Sy-Hwang Liou

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We report on the use of direct laser interference patterning to form an "anisotropy" lattice in CoPt thin film multilayers. CoPt multilayers have been extensively studied and, for the compositions studied here, are characterized by strong perpendicular magnetic anisotropy in which the magnetic moment is perpendicular to the film plane. In direct laser interference patterning, two-to-four coherent laser beams from a pulsed Nd:YAG laser strike the sample surface simultaneously, and for sufficiently intense beams the sample properties are modified locally where interference maxima occur. Kerr rotation, magnetic force microscopy, and atomic force microscopy measurements after patterning by one pulse from the laser show that the films have a regular array of "dots" with in-plane magnetization in a background matrix of perpendicular magnetization. Such patterning holds promise for the study of model nanoscale magnetic systems.

Original languageEnglish (US)
Article number093901
JournalJournal of Applied Physics
Volume99
Issue number9
DOIs
StatePublished - May 1 2006

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interference
anisotropy
lasers
magnetization
magnetic force microscopy
YAG lasers
pulsed lasers
magnetic moments
atomic force microscopy
laser beams
matrices
thin films
pulses

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Formation of an anisotropy lattice in Co/Pt multilayers by direct laser interference patterning. / Aktag, Aliekber; Michalski, Steven; Yue, Lanping; Kirby, Roger D.; Liou, Sy-Hwang.

In: Journal of Applied Physics, Vol. 99, No. 9, 093901, 01.05.2006.

Research output: Contribution to journalArticle

Aktag, Aliekber ; Michalski, Steven ; Yue, Lanping ; Kirby, Roger D. ; Liou, Sy-Hwang. / Formation of an anisotropy lattice in Co/Pt multilayers by direct laser interference patterning. In: Journal of Applied Physics. 2006 ; Vol. 99, No. 9.
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