Local structure and electron spin resonance of copper-doped SrTiO.sub.3./sub. ceramics

0422729 - FZÚ 2014 RIV US eng J - Journal Article
Laguta, Valentyn - Scherbina, O.I. - Garmash, E.P. - Pavlikov, V.N. - Karpec, M.V. - Glinchuk, M. D. - Svechnikov, G.S.
Local structure and electron spin resonance of copper-doped SrTiO₃ ceramics.
Journal of Materials Science. Roč. 48, č. 11 (2013), s. 4016-4022. ISSN 0022-2461. E-ISSN 1573-4803
R&D Projects: GA MŠMT(CZ) LM2011029
Grant - others:SAFMAT(XE) CZ.2.16/3.1.00/22132
Institutional support: RVO:68378271
Keywords : electron spin resonance * magnetoelectric * lattice defects * magnetoelectric coupling
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.305, year: 2013

We report X-ray diffraction and electron spin resonance (ESR) measurements of the effect of SrTiO3 ceramics doping using Cu2+ ions. ESR measurements reveal two kinds of Cu2+ centers in weakly (0.2–0.5 mol%Cu) doped SrTiO3. Both kinds of centers have been attributed to Cu2+ at octahedral Ti sites. For copper concentration larger than 2 mol%, the antiferromagnetic SrCu3Ti4O12 (SCTO) phase has been detected. The composite SrTiO3–SCTO ceramics exhibits substantial magnetocapacitance effect.
Permanent Link: http://hdl.handle.net/11104/0228863