Applied Physics Letters · 1997 · 28 citations · 13 references
Natural SciencesMaterials SciencePhysicsElectronic MaterialsOptical MaterialsSolid State PhysicsMagnetic Properties Of SolidsMagnetism In SolidsOptical Properties Of SolidsPerovskite MaterialsBarium TitanateCharge Transfer DynamicsCharge TransportCharge Transport MechanismsEnergy Transfer ProcessesOptical AbsorptionOptical Absorption SpectraStrontium Barium Titanate
Iron doped barium titanate was grown and reduced at various temperatures. Using optical absorption and electron paramagnetic resonance (photo-EPR) simultaneously, a wide absorption band at ∼2.1 eV due to Fe2+ is established. The light-induced charge transport between Fe2+/3+ and shallow Ti4+/3+−VO is identified, showing a two-center type response at low and one-center type response at room temperature.
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