Single antiferromagnetic axis of Fe in orthorhombic YMn0.5Fe0.5O3 films observed by x-ray magnetic linear dichroism

Shu Chih Haw, Chang Yang Kuo*, Zhiwei Hu, Je Wei Lin, Jenn Min Lee, Kueih Tzu Lu, Chih Hao Lee, Hong Ji Lin, Jyh Fu Lee, Chih Wen Pao, Arata Tanaka, Liu Hao Tjeng, Chien Te Chen, Jin Ming Chen

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    1 Scopus citations

    Abstract

    The electronic and magnetic structure of orthorhombic (o-) YMn0.5Fe0.5O3 (YMFO) epitaxial film (space group Pbnm) deposited on the YAlO3 (010) substrate have been investigated using linear polarization-dependent x-ray absorption spectroscopy and magnetization measurements. The magnetic-ordering temperature of around 280 K is observed in o-YMFO film. The x-ray absorption spectra at the Fe-K and the Mn-K edges indicate the existence of anisotropic crystal field in o-YMFO film, with the longest and shortest Fe–O and Mn–O bonds tend to align with the crystallographic b- and a-axis, respectively, whereas the medium Fe(Mn)–O bond is aligned with the c-axis. The experimental x-ray magnetic linear dichroism at the Fe-L2 edges demonstrate an unusual single antiferromagnetic axis of Fe3+ ions below magnetic-ordering temperature, while a multi antiferromagnetic axis is generally observed in o-RFeO3 (R = rare earth) thin films. Our configuration-interaction cluster calculations also reveal that the single antiferromagnetic axis of the Fe sublattice is aligned with the b-axis in o-YMFO film, whereas it is directed along the a-axis in the bulk o-YFeO3.

    Original languageEnglish
    Pages (from-to)79-84
    Number of pages6
    JournalJournal of Alloys and Compounds
    Volume780
    DOIs
    StatePublished - 5 Apr 2019

    Keywords

    • Configuration-interaction cluster calculation
    • Single antiferromagnetic axis
    • X-ray absorption
    • X-ray magnetic linear dichroism

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