Kolesnyk M. Phase Transitions in Easiest-Magnetization Axis Antiferromagnets Including the Dzyaloshinsky Interaction and Uniaxial Pressure

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0404U003195

Thesis Registration Form

0404U003195.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

24-06-2004

Specialized Academic Board

Д 55.051.02

Sumy State University

Essay

Phase Transitions in Easiest-Magnetization Axis Аntiferromagnets.The aim is consecutive study of phase transition peculiarities inducted by outer magnetic field in EMA tetragonal and rhombohedral antiferromagnets including interaction of the magnetic and subsystemThe magnetic phase diagram was constructed for MnF2 under the uniaxial pressure and salient features of the static and the high-frequency magnetic susceptibility were determined at the tricritical point and in the vicinity of the second-order phase transitions. In the study it was first discovered that due to the Dzyaloshinsky interaction being noninvariant with respect to rotation of the magnetic subsystem in the basal plane, there is a critical value of the uniaxial pressure for which the nature of the spin-flop transition is different.

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Files

Aref.doc

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