Correlation between Mn and Ru valence states and magnetic phases in SrMn1-xRuxO3
SCIE
SCOPUS
- Title
- Correlation between Mn and Ru valence states and magnetic phases in SrMn1-xRuxO3
- Authors
- Kim, DH; Lee, E; Kim, HW; Kolesnik, S; Dabrowski, B; Kang, CJ; Kim, M; Min, BI; Lee, HK; Kim, JY; Kang, JS
- Date Issued
- 2015-02-17
- Publisher
- AMER PHYSICAL SOC
- Abstract
- The electronic structures of SrMn1-xRuxO3 (0 <= x <= 1) have been investigated by employing soft x-ray absorption spectroscopy (XAS) and soft x-ray magnetic circular dichroism (XMCD). Both Mn and Ru ions are nearly tetravalent (Mn4+, Ru4+) for the end members of x = 0 (SrMnO3) and x = 1 (SrRuO3). In the Ru-dilute concentration (x <= similar to 0.2), Ru ions are pentavalent (Ru5+), which transform neighboring Mn ions into the trivalent Mn3+ states via electron charge transfer. In the intermediate substitution regime, Mn and Ru ions are in the inhomogeneously mixed-valent states (Mn-3 - Mn4+ and Ru-4 - Ru5+). Finite Mn 2p XMCD signals are observed for x > 0, in agreement with the ferromagnetic, spin-glass, cluster-glass ground states depending on x. The unoccupied Mn 3d and Ru 4d states, determined from the measured O 1s XAS spectra and the calculated density of states, support these findings.
- Keywords
- X-RAY-ABSORPTION; TRANSITION-METAL COMPOUNDS; ELECTRONIC-STRUCTURE; CIRCULAR-DICHROISM; SPECTROSCOPY; PHOTOEMISSION; SRRUO3
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13228
- DOI
- 10.1103/PHYSREVB.91.075113
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 91, no. 7, 2015-02-17
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