Počet záznamů: 1

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

  1. 1.
    0359525 - FZU-D 2012 RIV DE eng J - Článek v odborném periodiku
    Azamat, Dmitry - Dejneka, Alexandr - Trepakov, Vladimír - Jastrabík, Lubomír - Fanciulli, M. - Ivanov, V.Y. - Godlewski, M. - Sokolov, V.I. - Rosa, Jan - Badalyan, A. G.
    EPR spectroscopy of weak exchange interactions between Co2+ ions in ZnO.
    Physica Status Solidi-Rapid Research Letters. Roč. 5, č. 4 (2011), s. 138-140 ISSN 1862-6254
    Grant CEP: GA ČR GC202/09/J017; GA AV ČR KAN301370701; GA MŠk(CZ) 1M06002
    Výzkumný záměr: CEZ:AV0Z10100522
    Klíčová slova: transition metals * EPR * ZnO * exchange interactions
    Kód oboru RIV: BH - Optika, masery a lasery
    Impakt faktor: 2.218, rok: 2011

    Electron paramagnetic resonance (EPR) is used to identify the next nearest neighbour Co2+ 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 Seff = 1/2 of the lowest ground state Kramers doublets of the two Co2+ ions.The exchange parameters of weakly ferromagnetically coupled next nearest neighbor Co2+ pairs are estimated.
    Trvalý link: http://hdl.handle.net/11104/0197301