Ion transport in order-disorder ferroelectrics via high-frequency dielectric dispersion and NMR spectroscopy

Galina Ovtchinnikova; Alla Sapronova

doi:10.1117/12.276259

13 June 1997 Ion transport in order-disorder ferroelectrics via high-frequency dielectric dispersion and NMR spectroscopy

Galina Ovtchinnikova, Alla Sapronova

Author Affiliations +

Proceedings Volume 3181, Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications; (1997) https://doi.org/10.1117/12.276259
Event: Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications, 1996, Szczyrk, Poland

Abstract

The great interest has been shown recently in power law and universality as the properties of system formed of many interacting subunits. Among such systems are solids at 'critical points' where two or more macroscopic phases become indistinguishable. It seems that quite disparate systems behave in a remarkably similar fashion near their respective critical points - because what matters most is not the details of the microscopic interactions but rather the nature of the 'paths along which order is propagated' from one subunit to another distant subunit. These systems also exhibit power law behavior in their properties including dielectric respond on electromagnetic files. So it seems that both universality and power law reflect the fact that at critical points the interaction paths between the constituent subunits in complex systems dominate the cooperative behavior more than the detailed properties of the subunits themselves. Based on dielectric dispersion and NMR experiments this concept will be illustrated on ferroelectrics under order - disorder phase transitions.

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Galina Ovtchinnikova and Alla Sapronova "Ion transport in order-disorder ferroelectrics via high-frequency dielectric dispersion and NMR spectroscopy", Proc. SPIE 3181, Dielectric and Related Phenomena: Materials Physico-Chemistry, Spectrometric Investigations, and Applications, (13 June 1997); https://doi.org/10.1117/12.276259

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KEYWORDS

Dielectric dispersion

Ions

Spectroscopy

Complex systems

Dielectrics

Electromagnetism

Radio propagation

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