Asymmetry of the 57Fe Mössbauer quadrupole doublet in oriented powders and in single crystals of high-Tc superconductors
| Autor: | Y. Gros, F. Hartmann-Boutron |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Superconductivity
Materials science High-temperature superconductivity Condensed matter physics Energy Engineering and Power Technology Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Condensed Matter::Materials Science Paramagnetism law Condensed Matter::Superconductivity Mössbauer spectroscopy Quadrupole Diamagnetism Condensed Matter::Strongly Correlated Electrons Orthorhombic crystal system Electrical and Electronic Engineering Single crystal |
| Zdroj: | Physica C: Superconductivity. 172:287-294 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/0921-4534(90)90619-p |
| Popis: | This paper is devoted to the asymmetry ratio of the quadrupole doublet observed on the 14.4 keV Mossbauer transition (I e = 3 2 →I f = 1 2 ) of 57Fe, in a non-cubic site of a diamagnetic or paramagnetic orthorhombic compound. The intensity ratio of the two lines is computed for perfectly aligned powders, imperfectly aligned powders, untwinned single crystals and twinned single crystals. The resulting formulas are discussed in connection with recent experiments performed by various authors on oriented powders and on single crystals of high-Tc superconductors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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