In:
Angewandte Chemie International Edition, Wiley, Vol. 55, No. 49 ( 2016-12-05), p. 15292-15296
Kurzfassung:
The effects of Rh and Ru doping for SrFeO 3 , a helimagnetic metal with a cubic perovskite structure, are studied by magnetic and resistivity measurements. Although SrRhO 3 is a paramagnetic metal and SrRuO 3 is a ferromagnetic one, the Rh doping induces a nearly ferromagnetic metallic state, whereas the Ru doping induces a spin‐glass insulating state. Mössbauer measurements evidence a marked difference between SrFe 0.8 Rh 0.2 O 3 and SrFe 0.8 Ru 0.2 O 3 in the formal valences of Fe, which are estimated to be 4+ and 3.75+, respectively. The contrasting magnetic behaviors of Rh‐ and Ru‐doped SrFeO 3 are discussed in terms of the subtle balance between the double‐exchange ferromagnetism and the superexchange antiferromagnetism.
Materialart:
Online-Ressource
ISSN:
1433-7851
,
1521-3773
DOI:
10.1002/anie.201608222
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2016
ZDB Id:
2011836-3
ZDB Id:
123227-7
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