Magnetic coupling mechanism in A-site ordered perovskite YMn 3Al4O12: Extended (Mn-O)-(O-Mn) superexchange

Hongping Li, Xiaojuan Liu, Changsheng Li, Shuhui Lv, Yijia Bai, Zhongchang Wang, Jian Meng

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    A-site ordered double perovskites hold promise for potential device applications, where how their magnetic objects actually interact is known to influence functionality. Here, we investigate, by first-principles calculations, electronic and magnetic properties of YMn3Al4O 12, and demonstrate that it is an antiferromagnetic insulator. Our calculations reveal the extended (Mn-O)-(O-Mn) superexchange as a primary magnetic coupling mechanism in YMn3Al4O12, and further identify the O-O bonds as a key factor to dominate coupling strength. We suggest that this superexchange mode is the origin of antiferromagnetic behavior, opening an additional avenue to understand magnetic coupling in A-site ordered double perovskites.

    Original languageEnglish
    Pages (from-to)63-66
    Number of pages4
    JournalSolid State Sciences
    Volume17
    DOIs
    Publication statusPublished - 2013

    Keywords

    • Double perovskite
    • Electronic and magnetic properties
    • Extended superexchange
    • First-principles

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

    Fingerprint Dive into the research topics of 'Magnetic coupling mechanism in A-site ordered perovskite YMn <sub>3</sub>Al<sub>4</sub>O<sub>12</sub>: Extended (Mn-O)-(O-Mn) superexchange'. Together they form a unique fingerprint.

  • Cite this