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Mössbauer Study of (Ca,Sr)RuO3 Doped with 57Fe

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F05%3A00003313" target="_blank" >RIV/61989592:15310/05:00003313 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Mössbauer Study of (Ca,Sr)RuO3 Doped with 57Fe

  • Original language description

    2% of 57Fe doped in Ca1-xSrxRuO3 materials ( x ranging from 0 to 1) were prepared by a sol-gel method. The influence of the Sr/Ca ratio on the structural and magnetic properties of ruthenates was investigated by XRD and Mössbauer spectroscopy (15 - 300 K). The refined lattice parameters indicate an expansion of the unit cell volume with Sr and a transition of the crystal symmetry from orthorhombic for x < 0.4 to tetragonal for higher Sr content. This transition is also manifested in the 57Fe Mössbauer spectra through the change of: (a) the quadrupole splitting parameter, (~ 0.1 mm/s for x=0 and ~0 or slightly negative for x >= 0.4 samples). (b) The isomer shift (c) the magnetic hyperfine parameters (Heff), and (d) the magnetic transition temperature, which increase with x. The temperature dependence of Heff is significantly different for the CaRu0.9857Fe0.02O3 as compared to samples with x = 0.6, 0.8 and 1. In the latter materials, Mössbauer spectra at low temperatures show a much wide

  • Czech name

    Mössbauerovská studie (Ca,Sr)RuO(3) dopovaných (57)Fe

  • Czech description

    (Ca,Sr)(1-x)RuxO(3) materiály (x &#8712; <0,1>) dopované 2% (57)Fe byly připraveny sol-gel metodou. Vliv poměru Sr/Ca na strukturní a magnetické vlastnosti rutenátů byl zkoumán rentgenovou práškovou difrakcí a Mössbauerovou spektroskopií (15-300K). Mřížkové parametry odhalily nárůst elementární buňky s Sr a přechod od orthorombické krystalové symetrie pro x<0,4 k tetragonální symetrii pro větší obsahy Sr. Tyto přechody se projevují v mössbauerovských spektrech změnou hodnoty kvadrupolového posunu, izomérního posunu, magnetických hyperjemných parametrů a teplotou magnetického fázového přechodu.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BG - Nuclear, atomic and molecular physics, accelerators

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Industrial Applications of the Mössbauer Effect

  • ISBN

    0-7354-0250-7

  • ISSN

  • e-ISSN

  • Number of pages

    765

  • Pages from-to

    233-238

  • Publisher name

    American Institute of Physics

  • Place of publication

    New York

  • Event location

  • Event date

  • Type of event by nationality

  • UT code for WoS article