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Title: 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, synthesis of stable compounds in the entire doping range is often impossible. In this paper, we show results of high-energy resolution x-ray absorption and emission spectroscopies on a $${\mathrm{La}}_{2{-}2x}{\mathrm{Sr}}_{1+2x}{\mathrm{Mn}}_{2}{\mathrm{O}}_{7}$$ family of bilayered manganites in a broad doping range $$(0.5{\le}x{\le}1)$$. We established a relation between local Mn charge and Mn-O distances as a function of doping. Finally, 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.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [3]
  1. AGH Univ. of Science and Technology, Krakow (Poland). Faculty of Physics and Applied Computer Science. Dept. of Solid State Physics
  2. AGH Univ. of Science and Technology, Krakow (Poland). Academic Centre for Materials and Nanotechnology
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Publication Date:
Grant/Contract Number:
AC02-06CH11357; 11.11.220.01/6; DIR/WK/2016/19; 2014/14/E/ST3/00026
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 11; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); AGH Univ. of Science and Technology, Krakow (Poland)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Ministry of Science and Higher Education (Poland); National Science Centre of Poland
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; dopants; manganites; x-ray absorption near-edge spectroscopy; x-ray absorption spectroscopy; x-ray emission spectroscopy
OSTI Identifier:
1433887
Alternate Identifier(s):
OSTI ID: 1429939