Department of Optical and Magnetic Properties of Solids

Magnetic properties of materials on the basis of 3d- and 4f-elements: rare-earth intermetallics, perovskites, nano-sized systems, magnetic glasses, multiferoics, double-layered cobalt-based hydroxides (LDH).

• The exchange shift of the hysteresis magnetization loop of was revealed in Nd_2/3Ca_1/3MnO₃ manganite, which is characterized by a colossal magnetoresistance. This result confirmed the existence of magnetic phase separation and demonstrated the presence of an exchange interaction between ferromagnetic nanoclusters and an antiferromagnetic matrix in manganites (2014).
  
• For the first time, by electronic spin resonance (ESR), SQUID magnetometry and electric resistance measurements a direct evidence of the fact that below the charge ordering temperature, T_co ~ 212 K, the compound is a mixture of charge-ordered and charge-disordered phases, which is self-organizing in the process of phase transformation into charge-ordered state was obtained. (2016).
  
• For the first time, a high-temperature anomaly of the magnetic properties of Co-containing double layered hydroxides [Со²⁺_1-xAl³⁺_x(OH)₂]^x+(CO₃^y-)_x/y·5H₂O was detected in the temperature range 75 – 175 K; iwas established that the anomaly is due to the effect of "freezing" of hydrogen bonds (2017).
  
• For the first time the exchange shift of the hysteresis loops was discovered in a new promising multiferoid BiFe_0.5Sc_0.5O₃, which was recently synthesized under high pressure conditions that occurs when cooled in a magnetic field below the magnetic ordering temperature and indicates the magnetic phase separation of this compound in a magnetically ordered state (2018).
  

International cooperation

• Universidade de Aveiro (CICECO), Aveiro, Portugal.
• Univerzita Pavla Jozefa Šafárika v Košiciach (UPJS), Kosice, Slovak Republic.
• STFC Rutherford Appleton Laboratory (ISIS Facility), Oxfordshire, Didcot, The United Kingdom.
• Universität Duisburg-Essen (UDE), Essen, Germany.
• Vilniaus Universitetas (VU), Vilnius, Lithuania.
• Institute of Physics of the Czech Academy of Sciences (FZU), Prague, Czech Republic.
• B.I. Stepanov institute of Physics of the National Academy of Sciences of Belarus (IFAN), Minsk, Belarus.
• Institute of Low Temperature and Structure Research of the Polish Academy of Science (INTiBS PAN), Wroclaw, Poland.
• State Scientific and Production Association "Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus" (JISSSP NASB), Minsk, Belarus.
• Institute of Technical Acoustics of the National Academy of Sciences of Belarus" (ITA NASB), Minsk, Belarus.