The effect of unresolved quadrupole splitting of the observed peak position in Mössbauer spectroscopy

Ba, Goodman; Greenwood, N. N.; Turner, G. E.

doi:10.1016/0009-2614(70)80037-9

Cited by 21 publications

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“…For low concentrations we have a broad Eu2+ line due to spin relaxationeffectls [18 to 201 ; there the single Lorentzian line is not as good a fit to the data. Goodman et al [21] have shown through computer simulations that asymmetric electric-field-gradient hyperfine structure can simulate isomer shifts. But visual inspection of the spectra in Fig.…”

Section: Lattice Constantmentioning

confidence: 98%

Isomer shift of Eu²⁺ in fluorites

Schroeer

Kuo

Lambe

1979

Physica Status Solidi (b)

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Mossbauer studies are carried out for divalent europium as dopant in the fluorites CaF,, SrF,, and BaF,. The lslEu Mossbauer isomer shift in these materials increases, increases and decreases, respectively, as the Eu2+ concentration decreases below a few mole percent. Previous explanations of these effects as due to lattice pressure or host covalency are found t o be wrong. Instead these trends are interpreted as primarily due to variations in the admixture of t,he prevalent defect structure of E U~+ O : -F~-~~ (i = 1, 2 , 3 , or 4) which stabilizes the Eu2+ in these crystals. Mossbauerstudien werden fur zweiwertiges Europium als Dotierung in den Fluoriten

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