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Parameters of the electric field gradient tensor determined by57Co(57Fe) and67Cu(67Zn) emission Mossbauer spectroscopy for La2-xSrxCuO4copper sites
| Content Provider | Scilit |
|---|---|
| Author | Seregin, Pavel Masterov, V. F. Nasredinov, F. S. Saidov, C. S. |
| Copyright Year | 1992 |
| Description | Journal: Superconductor Science and Technology The parameters of the electric field gradient (EFG) tensor at the copper sites in the $La_{2-x}Sr_{x}CuO_{4}$ lattice (the principal component of the EFG tensor eq and the asymmetry parameter eta ) were determined experimentally by emission Mossbauer spectroscopy with$ ^{57}Co(^{587}$Fe) and$ ^{67}Cu(^{67}$Zn) isotopes. No qualitative conformity was found between the experimental data and the values of eq calculated in a point charge model. This disagreement is attributed to an uncertainty in the values of Sternheimer coefficients for $Zn^{2+}$ and $Fe^{3+}$ ions and in the charge scaling of the $La_{2-x}Sr_{x}CuO_{4}$ lattice. A comparison of the experimental and calculated dependences of eq on x shows that the holes arising from the substitution of $La^{3+}$ by $Sr^{2+}$ are localized mainly at the oxygen sites in the $Cu-O_{2}$ plane. |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-2048/5/11/014/pdf |
| Ending Page | 678 |
| Page Count | 4 |
| Starting Page | 675 |
| ISSN | 09532048 |
| e-ISSN | 13616668 |
| DOI | 10.1088/0953-2048/5/11/014 |
| Journal | Superconductor Science and Technology |
| Issue Number | 11 |
| Volume Number | 5 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1992-11-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Superconductor Science and Technology Geochemistry and Geophysics Principal Component Electric Field Gradient Mossbauer Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ceramics and Composites Materials Chemistry Metals and Alloys Condensed Matter Physics Electrical and Electronic Engineering |
