Interplay of local structure, charge, and spin in bilayered manganese perovskites

Chemical doping is a reliable method of modification of the electronic properties of transition metal compounds. In manganese perovskites, it leads to charge transfer and peculiar ordering phenomena. However, depending on the interplay of the local crystal structure and electronic properties, synthe...

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Bibliographic Details
Published in:Physical review. B 2018-03, Vol.97 (11), Article 115158
Main Authors: Rybicki, Damian, Sikora, Marcin, Przewoznik, Janusz, Kapusta, Czesław, Mitchell, John F.
Format: Article
Language:English
Subjects:
Charge transfer
Crystal structure
dopants
Doping
Energy resolution
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Manganese
Manganites
MATERIALS SCIENCE
Metal compounds
Organic chemistry
Perovskites
Transition metal compounds
X ray absorption
x-ray absorption near-edge spectroscopy
x-ray absorption spectroscopy
x-ray emission spectroscopy
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Summary:Chemical doping is a reliable method of modification of the electronic properties of transition metal compounds. In manganese perovskites, it leads to charge transfer and peculiar ordering phenomena. However, depending on the interplay of the local crystal structure and electronic properties, synthesis of stable compounds in the entire doping range is often impossible. Here, we show results of high-energy resolution x-ray absorption and emission spectroscopies on a La2−2xSr1+2xMn2O7 family of bilayered manganites in a broad doping range (0.5≤x≤1). We established a relation between local Mn charge and Mn-O distances as a function of doping. Based on a comparison of such relation with other manganites, we suggest why stable structures cannot be realized for certain doping levels of bilayered compounds.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.97.115158