EPR spectroscopy of weak exchange interactions between Co 2+  ions in ZnO | Zendy

Azamat D. V. | Zendy; Dejneka A. | Zendy; Trepakov V. A. | Zendy; Jastrabik L. | Zendy; Fanciulli M. | Zendy; Ivanov V. Y. | Zendy; Godlewski M. | Zendy; Sokolov V. I. | Zendy; Rosa J. | Zendy; Badalyan A. G. | Zendy

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EPR spectroscopy of weak exchange interactions between Co 2+ ions in ZnO

Author(s) -

Azamat D. V.,

Dejneka A.,

Trepakov V. A.,

Jastrabik L.,

Fanciulli M.,

Ivanov V. Y.,

Godlewski M.,

Sokolov V. I.,

Rosa J.,

Badalyan A. G.

Publication year - 2011

Publication title -

physica status solidi (rrl) – rapid research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.786

H-Index - 68

eISSN - 1862-6270

pISSN - 1862-6254

DOI - 10.1002/pssr.201105014

Subject(s) - electron paramagnetic resonance , spins , exchange interaction , ion , chemistry , dimer , spectroscopy , hamiltonian (control theory) , paramagnetism , crystallography , condensed matter physics , atomic physics , nuclear magnetic resonance , physics , ferromagnetism , mathematical optimization , mathematics , organic chemistry , quantum mechanics

Electron paramagnetic resonance (EPR) is used to identify the next nearest neighbour Co 2+ pairs coupled by spin–spin interaction in Co‐doped ZnO single crystals grown by the hydrothermal technique. These dimer centers are described by a spin Hamiltonian with exchange coupling terms written as interaction between identical effective spins S eff = 1/2 of the lowest ground state Kramers doublets of the two Co 2+ ions. The exchange parameters of weakly ferromagnetically coupled next nearest neighbor Co 2+ pairs are estimated. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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