Charge reallocation in the tetragonal to monoclinic transition in Pr<inf>1/2</inf>Sr<inf>1/2</inf>MnO<inf>3</inf>

A. Llobet, J. L. García-Muñoz, C. Frontera, C. Ritter

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    Abstract

    The structural changes associated with the ferromagnetic (FM) metallic-to-antiferromagnetic (AFM) insulating transition of Pr1/2Sr1/2MnO3 (I4/mcm→P21/n) have been analyzed by means of high-resolution neutron diffraction data. Mn positions in the low-temperature phase have the same charge and identically deformed octahedra. The transition is the result of a stretching-like distortion of the octahedra that (i) contracts the Mn-O bond perpendicular to the FM planes by deviating β from 90 °C and (ii) injects electrons into in-plane Mn-O bonds.
    Original languageEnglish
    Pages (from-to)790-792
    JournalPhysica B: Condensed Matter
    Volume276-278
    DOIs
    Publication statusPublished - 1 Jan 2000

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