High-frequency electron paramagnetic resonance investigationof Mn.sup.3+./sup. centers in SrTiO.sub.3./sub..

0377609 - FZÚ 2013 RIV GB eng J - Článek v odborném periodiku
Azamat, Dmitry - Badalyan, A. G. - Dejneka, Alexandr - Trepakov, Vladimír - Jastrabík, Lubomír - Frait, Zdeněk
High-frequency electron paramagnetic resonance investigationof Mn³⁺ centers in SrTiO₃.
Journal of Physics and Chemistry of Solids. Roč. 73, č. 7 (2012), s. 822-826. ISSN 0022-3697. E-ISSN 1879-2553
Grant CEP: GA ČR GC202/09/J017; GA ČR GAP108/12/1941; GA MŠMT(CZ) LM2011029
Grant ostatní: GA ČR(CZ) CZ.2.16/3.1.00/22132
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: electron paramagnetic resonance * SrTiO₃ doped with Mn * Jahn–Teller centers
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.527, rok: 2012

A high-frequency (49 and 70 GHz) electron paramagnetic resonance (EPR) study is reporHted on SrTiO3 single crystals doped with 0.5-at% of manganese. EPR spectra originating from the S=2 ground state of Mn3+ ions are shown to belong to the different types of Jahn–Teller centers that arise as a result of varied ordering of the oxygen vacancies due to the reducing process.The present results indicate the strong covalent reduction of the density of unpaired spins (Fermi term) at the manganese nucleus for the various types of centers.
Trvalý link: http://hdl.handle.net/11104/0007017