Email this article 63,65Cu NQR Spectra and Spin–Lattice Relaxation in Thermoelectric CuAlO2
- Authors: Ogloblichev V.V.1, Matukhin V.L.2, Arapova I.Y.1, Schmidt C.V.2, Khusnutdinov R.R.2
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Affiliations:
- M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- Kazan State Power Engineering University
- Issue: Vol 50, No 4 (2019)
- Pages: 619-625
- Section: Original Paper
- URL: https://journals.rcsi.science/0937-9347/article/view/248399
- DOI: https://doi.org/10.1007/s00723-018-1096-9
- ID: 248399
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Abstract
The 63,65Cu nuclear quadrupole resonance spectra and spin–lattice relaxation rate (1/T1) have been measured in the semiconductor compound CuAlO2. The value of the nuclei quadrupole interaction constant QCC = 56.24(6) MHz (T = 298 K) has been obtained. The broad maximum has been found in the temperature dependence of 1/T1 in the low-temperature region (below 276 K). This maximum can be associated with the presence of energy levels in the forbidden band. The activation energy has been estimated in CuAlO2 [EA = 45(2) meV], assuming the activation character of the mobility of holes.
About the authors
V. V. Ogloblichev
M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
Email: matukhinvl@mail.ru
Russian Federation, Yekaterinburg, 620108
V. L. Matukhin
Kazan State Power Engineering University
Author for correspondence.
Email: matukhinvl@mail.ru
Russian Federation, Kazan, 420066
I. Yu. Arapova
M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
Email: matukhinvl@mail.ru
Russian Federation, Yekaterinburg, 620108
C. V. Schmidt
Kazan State Power Engineering University
Email: matukhinvl@mail.ru
Russian Federation, Kazan, 420066
R. R. Khusnutdinov
Kazan State Power Engineering University
Email: matukhinvl@mail.ru
Russian Federation, Kazan, 420066
