Zener polaron ordering variants induced by A-site ordering in half-doped manganites |
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Authors: | Daoud-Aladine A Perca C Pinsard-Gaudart L Rodríguez-Carvajal J |
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Institution: | ISIS Facility, Rutherford Appleton Laboratory-CCLRC, Chilton, Didcot, Oxfordshire, United Kingdom. |
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Abstract: | We have studied the magnetism of the half-doped charge ordered manganite YBaMn2O6. A formation of ferromagnetic plaquettes of four Mn atoms in the charge ordered phase below T_{CO} approximately 480 K is inferred from high temperature magnetic susceptibility data and the magnetic structure, as determined by neutron powder diffraction at T=1.5 K. The results indicate that new fourfold Mn paramagnetic units form between T_{N}
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