X-ray absorption fine structure studies on La1-xSrxCoO3
نویسندگان
چکیده
10B, 9A/2004G086 X-ray absorption fine structure studies on La1-xSrxCoO3 U. Manju, D. Matsumura, T. Ohta, D. D. Sarma* Solid state and Structural Chemistry Unit, Indian Institute of Science, Bangalore560 012, India. Deptartment of Chemistry, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113. Synchrotron Radiation Research Center, Japan Atomic Energy Institute, Mikazuki, Sayo-gun, Hyogo 679-5148, Japan.
منابع مشابه
Local structure of La1-xSrxCoO3 determined from EXAFS and neutron pair distribution function studies.
The combined local structure techniques, extended x-ray absorption fine structure and neutron pair distribution function analysis, have been used for temperatures 4< or =T< or =330 K to rule out a large Jahn-Teller (JT) distortion of the Co-O bond in La1-xSrxCoO3 for a significant fraction of Co sites (x< or =0.35), indicating few, if any, JT-active, singly occupied e_{g} Co sites exist.
متن کاملSensing properties of perovskite oxide La1-xSrxCoO3-δ obtained by using pulsed laser deposition
La1-xSrxCoO3-δ belongs to the group of perovskite oxides of the ABO3 structure, with a trivalent rare earth in the A position (La) and a trivalent metal ion in the B position (Co). Doping with divalent Srions at the trivalent La-positions creates oxygen vacancies which give the oxide catalytic properties to H2O2. However, the conventional techniques which are used to prepare this oxide such as ...
متن کاملDirect observation of high-temperature polaronic behavior in colossal magnetoresistive manganites.
The temperature dependence of the electronic and atomic structure of the colossal magnetoresistive oxides La1-xSrxMnO3 (x=0.3, 0.4) has been studied using core and valence level photoemission, x-ray absorption and emission, and extended x-ray absorption fine structure spectroscopy. A dramatic and reversible change of the electronic structure is observed on crossing the Curie temperature, includ...
متن کاملEffect of Sr substitution on structural, redox and catalytic properties of nano-particles La1-xSrxMn0.5Co0.5O3 (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5) as a catalyst for CO oxidation
Structural features of La(1-x)SrxMn0.5Co0.5O3 (x = 0.0, 0.1, 0.2, 0.3, 0.4, and 0.5) nano-particles were investigated using X-ray powder diffraction and FT-IR spectroscopy. The characterization of compounds by X-ray powder diffraction and using Fullprof program show a cubic structure (Pm3m space group) for x = 0.0 and a rhombohedra structure (R-3c space group) for the Sr substituted La(1-x)SrxM...
متن کاملTemperature dependent evolution of the electronic and local atomic structure in the cubic colossal magnetoresistive manganite La1-xSrxMnO3
We have studied the temperature-dependent evolution of the electronic and local atomic structure in the cubic colossal magnetoresistive manganite La1-xSrxMnO3 (x= 0.3 – 0.4) with core and valence level photoemission (PE), x-ray absorption specroscopy (XAS), x-ray emission spectroscopy (XES), resonant inelastic x-ray scattering (RIXS), extended x-ray absorption fine structure (EXAFS) spectroscop...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005