X-ray magnetic circular dichroism spectroscopy investigation of ferromagnetic ordering in NdCoAsO
ORAL
Abstract
Recently, the electronic properties of RMOAs (R= rare earth, M = transition metal such as Fe or Co) type 3d-transition metal based layered oxypnictides have attracted considerable interest, in view of the discovery of superconductivity in the FeAs compounds. Here, we would like to present the results of ferromagnetic ordering, element specific magnetic moments of Nd and Co in NdCoAsO, obtained by x-ray magnetic circular dichroism spectroscopy at Nd and Co sites. The nature of magnetic coupling between Co and Nd and its temperature dependence in relation to the bulk magnetization will be discussed.
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Authors
Vemuru Krishnamurthy
University of Tennessee, Martin, Ripley Center, Ripley, Tennessee
Dave Keavney
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois
Michael McGuire
Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831
Oak Ridge National Laboratory, Oak Ridge, Tennessee
Oak Ridge National Laboratory - MSTD
Oak Ridge National Laboratory
Brian Sales
Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831
ORNL
Oak Ridge National Laboratory, Oak Ridge, Tennessee
Oak Ridge National Laboratory
Oak Ridge National Laboratory - MSTD
Athena Sefat
Oak Ridge National Laboratory
Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831
Oak Ridge National Laboratory, Oak Ridge, Tennessee
David Mandrus
Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831
ORNL
Oak Ridge National Laboratory, Oak Ridge, Tennessee
