| Autor: |
B.T. Song, S.Y. Wu, M.Q.Kuang, X.F. Hu |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Condensed Matter Physics, Vol 15, Iss 3, p 33701 (2012) |
| Druh dokumentu: |
article |
| ISSN: |
1607-324X |
| DOI: |
10.5488/CMP.15.33701 |
| Popis: |
The electron paramagnetic resonance (EPR) g factors gx, gy and gz of the orthorhombic Cu2+(1) site in fresh PrBa2Cu3O6+x powders are theoretically investigated using the perturbation formulas of the g factors for a 3d9 ion under orthorhombically elongated octahedra. The local orthorhombic distortion around the Cu2+(1) site due to the Jahn-Teller effect is described by the orthorhombic field parameters from the superposition model. The [CuO6]10- complex is found to experience an axial elongation of about 0.04 Å along c axis and the relative bond length variation of about 0.09 Å along a and b axes of the Jahn-Teller nature. The theoretical results of the g factors based on the above local structure are in reasonable agreement with the experimental data. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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