Please use this identifier to cite or link to this item:
Title: Femtosecond laser machining of high permeability permalloy
Authors: Tan, L.S. 
Lee, K.S. 
Hui, M.H.
Li, X.P. 
Issue Date: 2012
Citation: Tan, L.S., Lee, K.S., Hui, M.H., Li, X.P. (2012). Femtosecond laser machining of high permeability permalloy. Advanced Materials Research 500 : 363-370. ScholarBank@NUS Repository.
Abstract: For the multi-core orthogonal fluxgate magnetic field sensor, in which the sensor sensitivity increases exponentially with the number of cores in the sensing element, a micro or nano multi-core structured high permeability magnetic material, such as permalloy, is expected. A permalloy sheet can be formed into such a multi-core structure material by laser machining if the magnetic properties are not damaged. In this study, the effects of femtosecond laser machining of permalloy on the magnetic properties of the machined permalloy workpiece are investigated. The results show that changes in the coercivity of the machined permalloy workpiece are dependent on the surface morphology modification induced by the femtosecond laser. It appears that there is a laser fluence threshold for the permalloy coercivity to decrease to a minimum (as indicated by the formation of ripples on the machined surface), beyond which the coercivity will increases with the laser fluence at a gradual rate. © (2012) Trans Tech Publications.
Source Title: Advanced Materials Research
ISBN: 9783037853993
ISSN: 10226680
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on May 19, 2018

Page view(s)

checked on Jan 27, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.