Chromium doped manganites: evidence for electronically phase-separated systems |
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| Authors: | O Toulemonde F Studer A Barnabé B Raveau JB Goedkoop |
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| Institution: | (1) Laboratoire CRISMAT, Université de Caen (UMR 6508 associée au CNRS), ISMRA, boulevard Maréchal Juin, 14050 Caen Cedex, France, FR;(2) ESRF, BP 220, 38043 Grenoble Cedex, France, FR |
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| Abstract: | X-ray absorption spectroscopy (XAS) and soft-X-ray magnetic circular dichroism (SXMCD) at the Mn L2,3-, Cr L2,3- and O-K edges of Sm0.5Ca0.5Mn1-xCrxO3 () bulk polycrystalline samples have been performed at T=20 K below the ferromagnetic Curie temperature. We show the existence of a magnetic sublattice on each of the probed cations.
Considering an electronically phase-separated system, results are compared with magnetization and resistivity measurements
and a tentative correlation with magnetoresistance properties on such doped compounds is discussed.
Received 7 January 2000 |
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| Keywords: | PACS 75 30 Vn Colossal magnetoresistance - 78 70 Dm X-ray absorption spectra - 75 25 +z Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies synchrotron-source x-ray scattering etc ) |
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