Characterization of solids by Mössbauer spectroscopy

Rossum, M. Van

doi:10.1016/0146-3535(82)90008-9

Cited by 3 publications

(1 citation statement)

References 77 publications

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“…The lowest achievable experimental error bars on ν Q for each method are: 5 kHz for NMR or NQR on single crystals with an axially symmetric EFG [41,42], 100 kHz for NMR or NQR on powder samples with a nonaxially symmetric EFG [41,42], 5 MHz for LS on atomic beams [43], 10 kHz [44] for FTMW [45][46][47][48][49], 5-20 Hz (!) for MBER [50,51], and 500 kHz for PAC [52][53][54] and Mössbauer spectroscopy [55][56][57][58][59]. When compared to the quadrupole shift values in Table III (typically 100 kHz for A > ∼ 150), it is clear that only NMR for solids and FTMW and MBER for molecules are sensitive to the quadrupole shift-provided the isotope under consideration is sufficiently heavy.…”

Section: A Accuracy Of Quadrupole Interaction Experiments and Calculmentioning

confidence: 99%

Electron penetration into the nucleus and its effect on the quadrupole interaction

et al. 2010

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A series expansion of the interaction between a nucleus and its surrounding electron distribution provides terms that are well-known in the study of hyperfine interactions: the familiar quadrupole interaction and the less familiar hexadecapole interaction. If the penetration of electrons into the nucleus is taken into account, various corrections to these multipole interactions appear. The best known correction is a scalar term related to the isotope shift and the isomer shift. This paper discusses a related tensor correction, which modifies the quadrupole interaction if electrons penetrate the nucleus: the quadrupole shift. We describe the mathematical formalism and provide first-principles calculations of the quadrupole shift for a large set of solids. Fully relativistic calculations that explicitly take a finite nucleus into account turn out to be mandatory. Our analysis shows that the quadrupole shift becomes appreciably large for heavy elements. Implications for experimental high-precision studies of quadrupole interactions and quadrupole moment ratios are discussed. A literature review of other small quadrupole-like effects is presented as well (pseudoquadrupole effect, isotopologue anomaly, etc.).

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Section: A Accuracy Of Quadrupole Interaction Experiments and Calculmentioning

confidence: 99%

Electron penetration into the nucleus and its effect on the quadrupole interaction

et al. 2010

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Correlations of the119Sn Mössbauer Isomer Shift with Interatomic Distances for Complex Tetrahedral Semiconductors

Dragūnas

Makariùnas

Balčiūniené

1983

Phys. Stat. Sol. (a)

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The Mössbauer spectra of the compounds Cu2CdSn(S1−xSex)4 and Cu2CdSn(Se1−xTex)4 (x = 0; 0.25; 0.5; 0.75, and 1) are investigated. The linear increase of the Mössbauer isomer shift with the increase of x is observed. Comparison with the isomer shift for Cu2Sn(S1−xSex)3 and for AgCrSn(S1−xSex)4 reveals the existence two correlations between the Mössbauer isomer shift and the interatomic distance. The isomer shift as well as the interatomic distance increase while replacing S atoms by Se atoms (or Se atoms by Te atoms) in the nearest enivironment of the Mössbauer nucleus. The isomer shift strongly decreases with the increase of the interatomic distance for the compounds, which belong to different systems, but with the same x (with the same nearest environment of tin atoms).

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Laser Annealing of Semiconductors Studied by Mössbauer Spectroscopy

Langouche

1983

Cohesive Properties of Semiconductors Under Laser Irradiation

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Characterization of solids by Mössbauer spectroscopy

Cited by 3 publications

References 77 publications

Electron penetration into the nucleus and its effect on the quadrupole interaction

Electron penetration into the nucleus and its effect on the quadrupole interaction

Correlations of the119Sn Mössbauer Isomer Shift with Interatomic Distances for Complex Tetrahedral Semiconductors

Laser Annealing of Semiconductors Studied by Mössbauer Spectroscopy

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