EPR of Cu2+ Impurities in Cytosine Hydrochloride: A Case of Superhyperfine Structure

Abstract Electron Paramagnetic Resonance (EPR) studies have been carried out on the vanadyl (VO2) ion doped in single crystals of ZnTiF6 • 6H2O. The spectra indicate the presence of one set of eight lines characteristic of only one occupation site. The V-O bond orientation is along one of the three Zn-H2O bond directions in the trigonally distorted [Zn(H2O)6] octahedra. This behaviour is unlike that reported for vanadyl ion substituting for the M(H2O)6 sites in the Tutton salts, alums and AlCl3 • 6H2O. The Spin-Hamiltonian and bonding parameters for the [VO(H2O)5] complex have been evaluated. The hyperfine linewidths are 0.8 mT at 300 K and 77 K. No proton superhyperfine structure was observed at both these temperatures.

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The effect of the reorientation of Hi0(Li) defects in MgO on the25Mg superhyperfine structure

Journal of Physics C Solid State Physics ◽

10.1088/0022-3719/20/31/019 ◽

1987 ◽

Vol 20 (31) ◽

pp. 5177-5186 ◽

Cited By ~ 4

Author(s):

M L Sanjuan ◽

V M Orera

Keyword(s):

Superhyperfine Structure

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X-band EPR studies of hyperfine and superhyperfine structure of Mn2+ ions in polycrystalline CdO

Materials Chemistry and Physics ◽

10.1016/0254-0584(89)90046-1 ◽

1989 ◽

Vol 24 (1-2) ◽

pp. 71-81 ◽

Cited By ~ 6

Author(s):

R.F. Shinde ◽

S.K. Date

Keyword(s):

Superhyperfine Structure ◽

X Band

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The superhyperfine structure in the EPR spectra of Eu2+ ions in PbTe films

Materials Letters ◽

10.1016/0167-577x(92)90170-o ◽

1992 ◽

Vol 13 (1) ◽

pp. 18-20 ◽

Cited By ~ 2

Author(s):

Yu.S. Gromovoj ◽

S.V. Plyatsko ◽

G.E. Kostyunin

Keyword(s):

Epr Spectra ◽

Superhyperfine Structure

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Paramagnetische Elektronenresonanz (EPR) des Europiums in Cadmiumfluorid (CdF2: Eu 2+ ), weitere Untersuchungen / Electron Paramagnetic Resonance (EPR) of Europium in Cadmium - Fluoride (CdF2 : Eu2+), Further Details

Zeitschrift für Naturforschung A ◽

10.1515/zna-1971-1006 ◽

1971 ◽

Vol 26 (10) ◽

pp. 1589-1603

Author(s):

D. Geist ◽

E. Gerstenhauer ◽

G. Rsckebrandt

Keyword(s):

Electron Paramagnetic Resonance ◽

Eigenvalue Problem ◽

Numerical Solution ◽

Paramagnetic Resonance ◽

Cadmium Fluoride ◽

Crystalline Field ◽

Superhyperfine Structure ◽

Forbidden Transitions ◽

Epr Parameters ◽

Electron Paramagnetic

Abstract This paper describes EPR measurements within the system CdF2 : Eu 2+ between 77 K and 300 K at 9 GHz and 35 GHz for B || [001]. The measurements enable a test of the formerly determined EPR parameters by the strict numerical solution of the eigenvalue problem including the hyper-fine terms. In particular “forbidden” transitions (ΔM = 2) also occur in a strict cubic crystalline field. An interpretation of the superhyperfine structure at 9 GHz and 35 GHz is compatible with the constants T|| = 6.26 MHz and T| = - 6.04 MHz of the interaction with the F ions of the 1 st shell.

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