Trubitsyn M. EPR spectroscopy of the ferroelectric crystals near phase transitions

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0502U000130

Thesis Registration Form

0502U000130.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

15-03-2002

Specialized Academic Board

Д 08.051.02

Oles Honchar Dnipro National University

Essay

The dissertation is devoted to the problem of critical phenomena and the effects of structural defects near the phase transitions in ferroelectric crystals. The uniaxial, weak and incommensurate ferroelectrics are chosen as the objects of experimental investigations. Electron paramagnetic resonance spectroscopy is applied as the method. The direction of radiospectroscopical investigations of structural phase transitions is elaborated with respect to various classes of ferroelectric crystals. The universal nature of the local properties anomalies accompanying the phase transitions to polar state is established. The influence of various defects on the physical properties of ferroelectric crystals near structural phase transitions is revealed and the mechanisms of the effects are discussed. Sphere of use are functional devices for microelectronics, laser technique, training courses.

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