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Browse Journals & Magazines > Applied Physics Letters ...> Volume:97 Issue:5 Help

Bulk sensitive x-ray absorption and magnetic circular dichroism investigation of Mn- and Co-doped ZnO thin films

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4 Author(s)
Di Trolio, A. ; CNR, Istituto dei Sistemi Complessi, U.O.S. di Monterotondo, Via Salaria Km 29,300, Roma 00015, Italy ; Larciprete, R. ; Turchini, S. ; Zema, N.

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Bulk sensitive L2,3 x-ray magnetic circular dichroism spectra were measured in transmission on Mn- and Co-doped ZnO thin films grown by pulsed laser deposition on soft x-ray transparent silicon nitride membranes. The absorption spectra line shapes support that Mn and Co divalent ions substitute Zn ions ruling out the hint of cluster formation. The lack of dichroic signal at the Mn and Co-edges in such bulk sensitive measurements indicates that the ferromagnetism witnessed by vibrating sample magnetometry measurements could arise from delocalized magnetic moments, due to itinerant electrons associated with defects.

Published in:
Applied Physics Letters  (Volume:97 ,  Issue: 5 )

Date of Publication: Aug 2010

Page(s):
052505 - 052505-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3475925
Product Type:
Journals & Magazines
Date of Current Version :
16 September 2010
Issue Date :
Aug 2010

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