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Magnetic domain and domain-wall imaging of submicron Co dots by probing the magnetostrictive response using atomic force microscopy
Wittborn, J. (Kungl. Tekniska högskolan. Department of Materials Science)
Rao, K. V. (Kungl. Tekniska högskolan. Department of Materials Science)
Nogués i Sanmiquel, Josep (Universitat Autònoma de Barcelona. Departament de Física)
Schuller, Ivan K. (University of California, San Diego. Department of Physics)
American Physical Society

Date: 2000
Abstract: An approach to image the domains and domain walls of small ferromagnetic entities using atomic force microscopy(AFM), with a nonmagnetic AFM probe, has been developed. Exciting the sample in an external acmagnetic field, the distribution of magnetostrictive response at the surface is detected. By this technique, the domains and domain walls of submicron Co dots have been imaged with a 1 nm lateral resolution. In elliptical Co dots with a 350-nm-long axis on a triangular lattice array with 400 nm periodicity, we find evidence for two domains with opposite magnetization orientation across a wall. The domain-wall width in these dots is found to be about 35 nm. Furthermore, we observe a ferromagnetic alignment of the domains in the neighboring dots, which suggests a magnetostatic interaction among the dots.
Note: This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Rights: Tots els drets reservats.
Language: Anglès.
Document: article ; recerca ; publishedVersion
Subject: Atomic force microscopy ; Ferromagnetism ; Domain walls ; Nanodots ; Alternating current power transmission ; Magnetic domains ; Magnetic field sensors ; Magnetic fields
Published in: Applied physics letters, Vol. 76, Issue 20 (May 2000) , p. 2931-2933, ISSN 1077-3118

DOI: 10.1063/1.126520

4 p, 497.0 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Articles > Research articles
Articles > Published articles

 Record created 2014-02-26, last modified 2019-11-04

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