De, Dilip Kumar (1986) Powder EPR study of the Jahn-Teller effect and phase transition in Cu2+:ZnTiF6·6H20. PHYSICAL REVIEW B, 34 (7). pp. 4651-4655.
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Abstract
A powder electron-paramagnetic-resonance study of Cu2+ in ZnTiF6·6H20 has been made at 35 GHz in the range 4.2-300 K. The low-temperature structure has been related to four single-crystal Jahn-Teller transitions. The single-line spectrum at high temperature was replaced gradually by a multiline spectrum at temperatures below 165 K, i.e., about 6 K below the single-crystal transition temperature for 0.043 at. % Cu2+ concentration. The exponential line broadening with temperature in the high-temperature region (above phase transition) was fitted to an Orbach process, with an excited state at 1350 cm-1• A Jahn-Teller stabilization energy Err= 1000 cm-1 may be obtained from this fit. The relaxation rate 1/T1 is deduced and compared with that for Cu2+ :La3Mg2(N03l12· 24H20
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Physics |
| Depositing User: | Mrs Hannah Akinwumi |
| Date Deposited: | 12 Apr 2015 21:19 |
| Last Modified: | 12 Apr 2015 21:19 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/4908 |
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