I. Bdikin

Publications (2)0.3 Total impact

• Source

  Available from: Andrei Kholkin

  Article: Domain Dynamics in Piezoresponse Force Microscopy: Quantitative Deconvolution and Hysteresis Loop Fine Structure

  I. Bdikin, A. Kholkin, A. N. Morozovska, S. V. Svechnikov, S. -H. Kim, S V Kalinin
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  ABSTRACT: Domain dynamics in the Piezoresponse Force Spectroscopy (PFS) experiment is studied using the combination of local hysteresis loop acquisition with simultaneous domain imaging. The analytical theory for PFS signal from domain of arbitrary cross-section is developed and used for the analysis of experimental data on Pb(Zr,Ti)O3 polycrystalline films. The results suggest formation of oblate domain at early stage of the domain nucleation and growth, consistent with efficient screening of depolarization field within the material. The fine structure of the hysteresis loop is shown to be related to the observed jumps in the domain geometry during domain wall propagation (nanoscale Barkhausen jumps), indicative of strong domain-defect interactions. Comment: 17 pages, 3 figures, 2 Appendices, to be submmited to Appl. Phys. Lett
  03/2008;
• Article: Imaginary Time Schrödinger Treatment for Microstructure Modeling in Ferroelectrics

  E. Klotins, V. Shvartsman, I. Bdikin, A. Kholkin
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  ABSTRACT: Thermodynamic approach of ferroelectrics is reconsidered in recourse to thermal activated nature of polarization switching under arbitrary driving voltage. This analysis heavy relies on transformation of the problem to imaginary time Schr¨odinger equation and its integration by means adopted from pure quantum problems. It turns out that this nonadiabatic treatment reveals non-equilibrium properties directly relevant to reconstruction of local polarization from contact mode atomic force microscope measurements.
  Integrated Ferroelectrics 12/2004; 64:51-59. · 0.30 Impact Factor