The University of Dublin | Trinity College -- Ollscoil Átha Cliath | Coláiste na Tríonóide
Trinity's Access to Research Archive
Home :: Log In :: Submit :: Alerts ::

School of Physics >
Physics >
Physics (Scholarly Publications) >

Please use this identifier to cite or link to this item:

Title: Magnetic noise in MgO-based magnetic tunnel junction rings
Sponsor: Science Foundation Ireland
Author's Homepage:
Keywords: Atomic, molecular and chemical physics
Magnetization switching
Issue Date: 2010
Publisher: American Institute of Physics
Citation: Feng, J.F., Diao, Z., Feng, G., Nowak, E.R., Coey, J.M.D. , Magnetic noise in MgO-based magnetic tunnel junction rings , Applied Physics Letters, 96, 5, 2010, art. no. 052504
Series/Report no.: Applied Physics Letters;
Abstract: Magnetization switching is investigated in ring-shaped MgO-based magnetic tunnel junctions with 168% tunneling magnetoresistance. Besides the forward and reverse onion states, two vortex states and several metastable states are observed for the ferromagnetic free layer. Electrical noise is used to characterize the low frequency magnetization dynamics; a stationary 1/ f noise spectrum is observed within each magnetic state but they are separated by noise peaks which show a 1/ f2 spectrum that is associated with slow random telegraph fluctuations. In the 1/ f region, the normalized magnetic noise parameter, mag, is shown to be consistent with the fluctuation-dissipation theorem.
Description: PUBLISHED
Appears in Collections:Physics (Scholarly Publications)

Files in This Item:

File Description SizeFormat
mag.pdfPublished (publisher's copy) - Peer Reviewed382.91 kBAdobe PDFView/Open

This item is protected by original copyright

Please note: There is a known bug in some browsers that causes an error when a user tries to view large pdf file within the browser window. If you receive the message "The file is damaged and could not be repaired", please try one of the solutions linked below based on the browser you are using.

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


Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback