Published March 2007 | Version v1
Journal article Metadata-only

XAFS and neutron diffraction study of the La1-xSrxCoO3

Creators

  • 1. Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna 141980, Moscow region (Russian Federation)
  • 2. Institute of Solid State and Semiconductor Physics, 220072 Minsk (Belarus)
  • 3. Boreskov Institute of Catalysis, Lavrentiev prosp. 5, Novosibirsk 630090 (Russian Federation)
  • 4. Institute of Solid State Physics, Kengaraga str. 8, 1063 Riga (Latvia)
  • 5. Institut fuer Kristallographie und Festkoerperphysik (IKFP), Zellescher Weg 16, Physikgebaeude C 115, 01069 Dresden (Germany)
  • 6. Hahn-Meitner-Institut, Glienicker Str. 100, 14109 Berlin (Germany)

Description

We have studied the effects of hole doping on the crystal and electronic structure of the La1-xSrxCoO3 (x=0.0/0.5) by neutron Rietveld analysis and its correlation with the X-ray-absorption spectroscopy data. The abrupt decrease of the Co-O distance and an increase of the Co-O-Co angle upon substitution of La3+ by Sr2+in La1-xSrxCoO 3 are attributed to a change in the band structure at the transition from semiconducting to metallic state. Upon strontium doping, a variation of Co L2,3-edges in La1-xSrxCoO3 series suggests an increase of the mixed low Co4+ and high or intermediate Co3+ spin states. The possible explanation of the observed changes of the crystal and electronic structure in these cobaltites is discussed. (copyright 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1002/pssc.200673874

Additional details

Identifiers

DOI
10.1002/pssc.200673874;

Publishing Information

Journal Title
Physica Status Solidi. C, Conferences
Journal Volume
4
Journal Issue
3
Journal Page Range
p. 805-808
ISSN
1610-1634

Conference

Title
10. Europhysical conference on defects in insulating materials
Acronym
EURODIM 2006
Dates
10-14 Jul 2006
Place
Milan (Italy)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
38036777
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
ABSORPTION SPECTRA; BAND THEORY; BOND ANGLE; BOND LENGTHS; COBALT IONS; COBALT OXIDES; CRYSTAL STRUCTURE; DOPED MATERIALS; E1-TRANSITIONS; ELECTRONIC STRUCTURE; ENERGY SPECTRA; EXPERIMENTAL DATA; HIGH SPIN STATES; LANTHANUM OXIDES; NEUTRON DIFFRACTION; P STATES; S STATES; STRONTIUM OXIDES; X-RAY SPECTRA
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; COBALT COMPOUNDS; COHERENT SCATTERING; DATA; DIFFRACTION; DIMENSIONS; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; INFORMATION; IONS; LANTHANUM COMPOUNDS; LENGTH; MATERIALS; MULTIPOLE TRANSITIONS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SCATTERING; SPECTRA; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
With 5 figs., 15 refs.. SICI: 1610-1634(200703)4:3<805::AID-PSSC200673874>3.0.TX;2-M