Selective generation of local ferromagnetism in austenitic stainless steel using nanoindentation
Sort Viñas, Jordi (Institució Catalana de Recerca i Estudis Avançats)
Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física)
Concustell i Fargas, Amadeu (Universitat Autònoma de Barcelona. Departament de Física)
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física)
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física)
Farran José, Joan (Suñer, S. A.)
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)
American Physical Society

Date:	2006
Abstract:	Periodic arrays of magnetic structures with micrometrer and submicrometer lateral sizes have been prepared at the surface of an austenitic stainless steel by means of local deformation using a nanoindenter. This method takes advantage of the phase transformation (from nonmagnetic fcc austenite to ferromagnetic bct martensite) which occurs in this material upon plastic deformation. The local character of the induced ferromagnetism is confirmed by magneto-optical Kerr effect measurements together with magnetic force microscopy imaging. The generated ferromagnetism can be subsequently erased by subjecting the deformed steel to annealing processes at temperatures above the reverse, martensite-to-austenite, phase transformation temperature.
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Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Ferromagnetism ; Magnetic force microscopy ; Hardness ; Magnetooptic ; Kerr effect ; Atomic force microscopy ; Annealing ; Nanotechnology ; Martensitic phase transitions ; Phase transitions ; Scanning electron microscopy
Published in:	Applied physics letters, Vol. 89, Issue 3 (July 2006) , p. 032509/1-032509/3, ISSN 1077-3118

DOI: 10.1063/1.2227827

4 p, 337.1 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Articles > Research articles
Articles > Published articles