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| Content Provider | EDP Sciences |
|---|---|
| Author | C.A. Bates P. Steggles A. Vasson A.-M. Vasson |
| Abstract | Measurements are reported of the spin-lattice relaxation time T 1m of the Cr3+ ion in Al2O3 in the presence of either Cr2+ or Mn3+ ions. Both resonant (RCR) and non-resonant (NCR) cross-relaxation processes are identified, the latter in zero magnetic field. By carefully choosing the frequency, RCR to Cr2+ and Mn3+ are clearly visible in a number of samples. Temperature-dependence measurements on the Cr2+-containing crystals give results in agreement with the theoretical calculations detailed here. The theory of NCR is developed and used to extract the energies of the first excited states from the Cr2+ and Mn3+ NCR data. The values obtained are the same as those reported from phonon spectroscopy measurements. Finally, the relation between measurements of T1m and theoretical calculations in any system is discussed in general and discrepancies are accounted for in terms of NCR to either trace impurities or clusters or both. |
| Ending Page | 987 |
| Starting Page | 977 |
| Page Count | 11 |
| File Format | HTM / HTML PDF |
| ISSN | 03020738 |
| Alternate Webpage(s) | http://dx.doi.org/10.1051/jphys:019790040010097700 |
| Issue Number | 10 |
| Journal | Journal de Physique |
| Volume Number | 40 |
| DOI | 10.1051/jphys:019790040010097700 |
| Language | English |
| Publisher | Société Française de Physique |
| Publisher Date | 1979-10-01 |
| Access Restriction | Subscribed |
| Subject Keyword | acoustic paramagnetic resonance chromium crystal field interactions electron spin lattice relaxation gamma ray effects manganese ruby |
| Content Type | Text |
| Resource Type | Article |
| Subject | Engineering |
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