Effect of Ionizing Radiation on Energy-Barrier Distribution for Domain Walls in Ferroelectrics

Gladkiı, V. V.; Kirikov, V. A.; Ivanova, E. S.
May 2000
Crystallography Reports;May2000, Vol. 45 Issue 3, p482
Academic Journal
A precision study of slow polarization in a polydomain ferroelectric has been performed on an example of triglycine sulfate samples in weak electric fields prior to and upon their γ-irradiation at doses of 0.2 and 0.3 Mrad. It is shown that in all the cases, relaxation obeys the universal temporal power law. The phenomenological analysis of the experimental data was performed in the approximation of noninteracting relaxation centers (nuclei), which provided the restoration of the spectra of potential barrier distribution for domain walls in the crystal. The transformation of the spectrum of a γ-irradiated ferroelectric indicates the simultaneous formation of new small and gigantic barriers in the crystal.


Related Articles

  • Structural and dielectric characterization of Sm2Bi2Ti3O12 ferroelectric ceramics. Alvarez-Fregoso, Octavio // Journal of Applied Physics;2/1/1997, Vol. 81 Issue 3, p1387 

    Reports on the structural and dielectric characterization of Sm2Bi2T3O12 ferroelectric ceramics. Impedance response; Activation energies; Builk dieletric constant; Ferroelectric Curie temperature.

  • Application of the second harmonic generation microscope to nondestructive observation of... Kurimura, Sunao; Uesu, Yoshiaki // Journal of Applied Physics;1/1/1997, Vol. 81 Issue 1, p369 

    Utilizes the second harmonic generation microscope in observing ferroelectric crystals. Exploitation of phase reversal of the second harmonic wave accompanying inversion of spontaneous polarization; Demonstration of the validity of the technique; Characterization of poled structure in...

  • Mechanical vibration of freely suspended ferroelectric liquid-crystal film excited by sound and... Uto, Sadahito; Tazoh, Eisuke // Journal of Applied Physics;9/15/1997, Vol. 82 Issue 6, p2790 

    Investigates the unique mechanical vibration of freely suspended (FS) ferroelectric liquid-crystal film excited by sound and altering electric field. Mechanical vibration of the FS film; Applied-field dependencies of the amplitude of the signal detected by the photodiode; Response signals...

  • Integration of ferroelectric nonvolatile memories. Jones Jr., Robert E. // Solid State Technology;Oct97, Vol. 40 Issue 10, p201 

    Focuses on the integration of ferroelectric nonvolatile memories. Process integration architecture; Ferroelectric materials and processing; Comparison of bit cell process architectures with strapped contacts and stacked contacts; Electrode/barrier materials and processes; Capacitor patterning.

  • Crystals bend over backward.  // R&D Magazine;Jul97, Vol. 39 Issue 8, p9 

    Reports that researchers at the Penn State University have developed a process that stops ferroelectric crystals from deforming. Features of the devices.

  • A new model of shouldered survival curves Kumazawa, S. // Environmental Health Perspectives Supplements;1994 Supplement 1, Vol. 102, p131 

    No abstract available.

  • Polarization dynamics in a ferroelectric relaxor excited by short pulses. Boscolo, I.; Cialdi, S. // Applied Physics Letters;4/14/2003, Vol. 82 Issue 15, p2500 

    Polarization dynamics in a relaxor ferroelectric is investigated by exciting samples, set at different temperatures, with short high voltage (≈ 1 kV) rectangular pulses (≈200 ns) and then by measuring the charge carried to the sample, i.e., the polarization. Further important...

  • Surface deformation and ferroelectric domain switching induced by a force microscope tip on a La-modified PbTiO[sub 3] thin film. Labardi, M.; Polop, C.; Likodimos, V.; Pardi, L.; Allegrini, M.; Vasco, E.; Zaldo, C. // Applied Physics Letters;9/8/2003, Vol. 83 Issue 10, p2028 

    Surface deformation of a ferroelectric (111)-oriented thin film of La-modified PbTiO[sub 3] is induced by contact with the tip of a scanning force microscope (SFM). The deformation is accompanied by switching of the out-of-plane polarization of ferroelectric domains revealed by simultaneous...

  • Dielectric response of relaxor ferroelectrics in the time-domain. Jang, Hyun M. // Applied Physics Letters;9/29/2003, Vol. 83 Issue 13, p2635 

    Dielectric response of relaxor ferroelectrics was analyzed in the time-domain by evaluating the relaxation-time (Ï„) distribution of Pb(Mg[sub 1/3]Nb[sub 2/3])O[sub 3]-10 mol % PbTiO[sub 3] using the method of Tikhonov regularization. The distribution function g(Ï„) became exponentially...


Read the Article


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

Try another library?
Sign out of this library

Other Topics