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J. Appl. Phys. 108, 042010 (2010); http://dx.doi.org/10.1063/1.3474965 (8 pages)

Ferroelectric microdomains and microdomain arrays recorded in strontium–barium niobate crystals in the field of atomic force microscope

Tatiana R. Volk1, Liliya V. Simagina1, Radmir V. Gainutdinov1, Alla L. Tolstikhina1, and Lyudmila I. Ivleva2

1Institute of Crystallography of the Russian Academy of Sciences, 119333 Moscow, Russia
2Institute for General Physics of the Russian Academy of Sciences, 119991 Moscow, Russia

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(Received 1 February 2010; accepted 4 May 2010; published online 31 August 2010)

Microdomains and various one-dimensional (1D)- and two-dimensional (2D)-microdomain arrays were formed under dc-voltages applied to the tip of an atomic force microscope (AFM) in ferroelectric SrxBa1−xNb2O6 crystals. Detailed studies of the characteristics of the AFM—recording and decay kinetics of the written arrays have shown that the crucial factors of the stability of a domain array are its dimensionality and discreteness (described by a distance Δ between the recorded point domains forming the array). The dependence of the stability on the discreteness of domain ensembles is analyzed. With decreasing Δ, the decay times of the domain ensembles increases. The stability of 2D arrays (domain squares, complex-shaped arrays composed of the domain ensembles of opposite polarity) by orders of magnitude exceeds that of 1D-arrays (domain chains and lines) provided all factors of recording being the same. As an illustration, the decay time of individual (spatially separated) domains and quasicontinuous domain lines are tens of minutes and about 20 h, respectively, whereas a quasicontionuous domain square persists within at least ten days. We assume the existence of cooperative interactions in microdomain ensembles, which reveal themselves even in arrays consisting of spatially separated point domain.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL PROCEDURES AND CRYSTALS UNDER STUDY
  3. EXPERIMENTAL RESULTS AND DISCUSSION
    1. Characterization of the domain recording under AFM-tip voltages in SBN crystals
    2. Microdomain arrays recorded in SBN in the AFM-field and peculiar features of their relaxation
  4. CONCLUSION

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KEYWORDS and PACS

PACS

  • 77.84.Ek

    Niobates and tantalates

  • 77.80.Dj

    Domain structure; hysteresis

  • 77.65.Bn

    Piezoelectric and electrostrictive constants

  • 68.37.Ps

    Atomic force microscopy (AFM)

  • 68.35.B-

    Structure of clean surfaces (and surface reconstruction)

ARTICLE DATA

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

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