Gapon V. Effect of light on magnetic field induced phase transitions in manganese oxides Ca3Mn2Ge3O12 and Pr0,6La0,1Ca0,3MnO3

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0406U001785

Thesis Registration Form

0406U001785.pdf

Applicant for

Specialization

  • 01.04.11 - Магнетизм

11-04-2006

Specialized Academic Board

Д 64.175.02

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

Essay

Object - the phase transitions in magnetoordered materials; goal - reveal and study by the experiment of the general behaviors of the influence of light on magnetic field induced phase transitions in manganese oxides - Ca3Mn2Ge3O12 garnet and Pr0,6La0,1Ca0,3MnO3 manganite; method - magnetooptic Faraday effect, SQUID-magnetometry, electrical resistance measurement; results and novelty - It has been found that the linearly polarized light can stimulate or suppress the metamagnetic phase transition in AFM garnet Ca3Mn2Ge3O12. Under experiment the induced by light magnetic moment has been found in the Ca3Mn2Ge3O12 garnet. It has been found that the illumination of Pr0,6La0,1Ca0,3MnO3 manganite in magnetic field stimulates the transition from AFM insulator to FM metal state; employment - investigation of fundamental physical properties

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