Polarization-dependent resonant-x-ray diffraction in charge- and orbital-ordering phase of Nd1/2Sr1/2MnO3

K. Nakamura, T. Arima, A. Nakazawa, Y. Wakabayashi, Y. Murakami

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A study of resonant-x-ray scattering in a charge-ordered perovskite manganese oxide Nd1/2Sr1/2MnO3 was performed. Dipole-resonant superlattice reflections originating from the orderings of the charge and orbital with Qcharge = (0,1,0) and Qorbital = (0,1/2,0) in the Pbnmsetting were observed. Sudden change in the intensity of the superlattice scattering at the transition temperature indicated a strong first-order phase transition. Characteristic dependence on the x-ray polarization was observed not only for orbital-order superlattice scattering but also for charge-order scattering. It should be closely related to the orbital-ordering type (d3x2-r2/d3y2-r2)or (dx2-z2/dy2-z2).

Original languageEnglish
Pages (from-to)2425-2428
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number4
Publication statusPublished - 1999


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