Electron spin resonance investigation of oxygen-vacancy-related defects in BaTiO3 thin films

Laguta, V. V.; Slipenyuk, A. M.; Bykov, I. P.; Glinchuk, M. D.; Maglione, M.; Michau, D.; Rosa, J.; Jastrabik, L.
July 2005
Applied Physics Letters;7/11/2005, Vol. 87 Issue 2, p022903
Academic Journal
The Ti3+ center, based on a regular Ti site perturbed by an oxygen vacancy (VO), is identified by electron spin resonance (ESR) in textured BaTiO3 films. The center shows tetragonal symmetry along cubic <100> axes with g-factors: g∥=1.997, g⊥=1.904. The spectrum of this defect disappeared after the film annealing at 700 °C in an O2 atmosphere. We describe the observed spectrum as Ti3+–VO couple defects or F+ center, which have never been observed in bulk BaTiO3. ESR is thus a unique tool to identify oxygen-vacancy-related defects, which have a large effect on the performance of ferroelectric films.


Related Articles

  • Millimeter and submillimeter EPR spectroscopy. Konovalov, A. A.; Tarasov, V. F. // Radiophysics & Quantum Electronics;Oct2007, Vol. 50 Issue 10/11, p813 

    For a long time, the electron paramagnetic resonance (EPR) spectrometers have been operated in X and Q bands with wavelengths of microwave radiation about 3 cm and 8 mm. Increasing the operating frequency improves the basic parameters of an EPR spectrometer. In view of this, there has recently...

  • An EPR study of Er3+ impurities in RbTiOPO4 single crystals. Bravo, D.; Martín, A.; Carvajal, J. J.; Aguiló, M.; Díaz, F.; López, F. J. // European Physical Journal B -- Condensed Matter;Aug2007, Vol. 58 Issue 3, p237 

    An electron paramagnetic resonance (EPR) study of Er3+ ions in single crystals of RbTiOPO4 (RTP) is presented. The EPR spectra show the existence of six different Er3+ centres. The g-matrix has been determined for these centres from the analysis of the angular dependences of the spectrum in...

  • A Study of Deep Defect Levels in Semi-Insulating SiC Using Optical Admittance Spectroscopy. Wonwoo Lee; Zvanut, M. E. // Journal of Electronic Materials;Jun2007, Vol. 36 Issue 6, p623 

    Optical admittance spectroscopy (OAS), supported by electron paramagnetic resonance (EPR) measurements, is used to identify the controversial vanadium acceptor levels in vanadium-doped semi-insulating (SI) 4H-SiC and 6H-SiC. The V3+/4+ levels for the cubic site are likely located at Ec - 0.67...

  • Synthesis and characterization of polyureasilazane derived SiCN ceramics. Andronenko, Sergey I.; Stiharu, Ion; Misra, Sushil K. // Journal of Applied Physics;6/1/2006, Vol. 99 Issue 11, p113907 

    Samples of SiCN ceramics were synthesized by thermal treatment of commercially available CERASET™ polyureasilazane, used as liquid-polymer precursor, at pyrolysis temperatures of 1000, 1050, 1100, 1150, and 1200 °C. Electron paramagnetic resonance (EPR) signals due to sp2-hybridized...

  • Coherent defect spectroscopy with pulsed optically and electrically detected magnetic resonance. Boehme, C.; Lips, K. // Journal of Materials Science: Materials in Electronics;Oct2007 Supplement, Vol. 18, p285 

    A short review of the theoretical and experimental foundations of pulsed optically and electrically detected magnetic resonance (pODMR and pEDMR, respectively) as well as their fields of applications is given. In comparison to electron spin resonance spectroscopy, ODMR and EDMR can be...

  • Electron-spin-resonance analysis of magnetic ordering in Co58Mn20B10Si12 amorphous alloy. Chong Seung Yoon; Keum Jee Chung; Ji Won Kim; Chang Kyung Kim // Journal of Applied Physics;10/15/2005, Vol. 98 Issue 8, p083902 

    Electron-spin-resonance (ESR) spectroscopy was used to study the magnetic structure of the paramagnetic Co58Mn20B10Si12 amorphous alloy, produced by melt spinning. The room-temperature ESR spectrum consisted of two resonance peaks (g=2.00 and g=5.22). The resonance peak at g=5.22 was tentatively...

  • Describing the structure and assembly of protein filaments by EPR spectroscopy of spin-labeled side chains. Madhu S. Budamagunta; John Hess; Paul Fitzgerald; John Voss // Cell Biochemistry & Biophysics;May2007, Vol. 48 Issue 1, p45 

    In this review we summarize our approach to the study of Intermediate Filament (IF) structure and assembly by electron paramagnetic resonance (EPR) spectroscopy of site-directed spin labels. Using vimentin, a homopolymeric type III IF protein, we demonstrate that this approach serves as a...

  • Perturbational relativistic theory of electron spin resonance g-tensor. Manninen, Pekka; Vaara, Juha; Ruud, Kenneth // Journal of Chemical Physics;7/15/2004, Vol. 121 Issue 3, p1258 

    We carry out a complete treatment of the leading-order relativistic one-electron contributions, arising from the Breit–Pauli Hamiltonian, to the g-tensor of electron spin resonance spectroscopy. We classify the different terms and discuss their interpretation as well as give numerical ab...

  • Effect of microwave power on EPR spectra of natural and synthetic dental biocompatible materials. Adamczyk, Jakub; Ramos, Paweł; Pilawa, Barbara // Nukleonika;Jul2015, Vol. 60 Issue 3, p449 

    Paramagnetic centers in the two exemplary synthetic and natural dental biocompatible materials applied in implantology were examined by the use of an X-band (9.3 GHz) electron paramagnetic resonance (EPR) spectroscopy. The EPR spectra were measured in the range of microwave power 2.2-70 mW. The...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics