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Study of Chromium Impurities in SrTiO3 by Photo-Electron Paramagnetic Resonance Spectroscopy
Published online by Cambridge University Press: 01 February 2011
Abstract
Chromium impurities in SrTiO3 grown by Verneuil and Float-zone methods were investigated using photo-electron paramagnetic resonance spectroscopy. The samples are the substrates typically used for deposition of multifunctional and ferromagnetic films. A maximum optical cross section for Cr3+ of 2.6×10−18 cm2 is obtained from the time-dependent data, and steady state measurements suggest the presence of a defect level 2 eV from one of the band edges. The cross section is similar to that obtained from optical absorption studies of Cr3+ in semiconductors. The results produced here should be useful for those trying to interpret photoluminescence or similar optical characterization data.
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- Copyright © Materials Research Society 2008