Myshchyshyn O. Refractive properties of the sulphates and selenates crystals in the range of phase transitions

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0499U002671

Thesis Registration Form

0499U002671.pdf

Applicant for

Specialization

  • 01.04.10 - Фізика напівпровідників і діелектриків

13-10-1999

Specialized Academic Board

Д 35.051.09

Ivan Franko National University of Lviv

Essay

Object of investigation: (CH2NH2COOH)3*H2SO4, (CH3)2NH2Al(SO4)2*6H2O NH4HSeO4, K2SeO4 crystals. Aim of investigation: Stady of the behaviour of physical properties of the phase transition in crystals. Methods of investigation: Polarizatioin-optical, dilatometric, dielectric. Results: New method of the optic-interference investigation of crystals is offered. New manifestations of the ferroelectric phase transitions in phisical properties of crystals are stadied. Inculcation: The results are used at the Ivan Franko L'viv State University for the refractomatry investigations of new crystal material. Application: physics of phase transition incrystals, refractomatry

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