EPR and ENDOR in manganese doped SrTiO3: Electric quadrupole interaction and local disorder.

Autor: Hrabovsky, M., Azamat, D. V., Jastrabik, L., Dejneka, A., Trepakov, V. A., Badalyan, A. G., Baranov, P. G.
Předmět:
Zdroj: Journal of Applied Physics; 2018, Vol. 124 Issue 12, pN.PAG-N.PAG, 5p, 1 Diagram, 1 Chart, 4 Graphs
Abstrakt: Electron paramagnetic resonance (EPR) and electron nuclear double resonance (ENDOR) studies were performed on heavily manganese doped SrTiO3 crystals. At low temperatures (T ≈ 6 K), the ENDOR measurements on Mn T i 4 + show the presence of electric field gradient associated with the electrical polarization. The observation of EPR signals of rhombic Mn 2 + complexes remotely compensated in the SrTiO3 lattice is discussed in connection with local disorder in which Mn 2 + appears due to the reduction process. [ABSTRACT FROM AUTHOR]
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