FEATURES OF THE ELECTRONIC STATE OF COPPER IONS OF CuBO2 (B = Al, Cr, Fe) COMPOUNDS WITH THE DELAFOSSITE STRUCTURE
- Authors: Smolnikov A.G.1, Ogloblichev V.V2, Piskunov Y.V.1, Sadykov A.F.1
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Affiliations:
- M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences
- M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- Issue: Vol 126, No 8 (2025)
- Pages: 857-864
- Section: ЭЛЕКТРИЧЕСКИЕ И МАГНИТНЫЕ СВОЙСТВА
- URL: https://ogarev-online.ru/0015-3230/article/view/303490
- DOI: https://doi.org/10.7868/S3034621525080025
- ID: 303490
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Abstract
Nuclear quadrupole resonance (NQR) spectra of 63,65Cu were measured in CuCrO2 and CuAlO2 samples over a wide temperature range (30–380 K). The spectra consist of two Gaussian-shaped lines with a width at half the height of Δ63ν = 30 kHz for CuCrO2 and Δ63ν = 55 kHz for CuAlO2. The frequency of resonance 63,65νQ (T) increases with decreasing temperature and reaches a plateau at Al νQ = 28.29 MHz and Cr 63νQ = 27.11 MHz below 100 K. Analysis of NMR, NQR and structural data of isostructural compounds CuBO2 (B = Al, Cr, Fe) allows us to reasonably assume the presence of hybridized 3dz2-r2 – 4s-orbitals in Cu+ ions.
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About the authors
Aleksey G. Smolnikov
M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences
Author for correspondence.
Email: smolnikov@imp.uran.ru
ORCID iD: 0000-0001-6295-9530
SPIN-code: 1684-9267
ResearcherId: J-9285-2013
Russian Federation, Yekaterinburg, 620108
Vasiliy V Ogloblichev
M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
Email: ogloblichev@imp.uran.ru
ORCID iD: 0000-0003-0520-7521
ResearcherId: K-3399-2013
Russian Federation, Yekaterinburg, 620108
Yuriy V. Piskunov
M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences
Email: piskunov@imp.uran.ru
ORCID iD: 0000-0002-6115-6207
ResearcherId: J-7799-2013
Russian Federation, Yekaterinburg, 620108
Almaz F. Sadykov
M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences
Email: Sadykov@imp.uran.ru
ORCID iD: 0000-0003-1742-278X
SPIN-code: 4628-1634
ResearcherId: J-3528-2013
Russian Federation, Yekaterinburg, 620108
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