Shvedun M. Structural study of perovskite-like structures in the vicinity of low-temperature phase transitions.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0407U004937

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

20-11-2007

Specialized Academic Board

Д 64.175.03

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

Essay

Thesis for а candidate's degree is aimed at investigation of anisotropy in the temperature dependences of thermal expansion for a broad variety of compounds with perovskite-like structure near low-temperature phase transitions by means of x-ray and neutron diffraction. It is shown, that peculiarities in behavior of the linear thermal expansion coefficient result from the phonon-spectrum features, caused by strong anisotropy of interatomic interaction both in the layers and in the chains.

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