Thermoelectric magnetic sulfides
Provider: Grantová agentura ČR
Programme: Standardní projekty
Implementation period: 01.01.18 - 30.06.21
Workplace:
Fakulta chemicko-technologická - Katedra obecné a anorganické chemie
Investigator: Kucek VladimírTeam member: Plecháček Tomáš | Drašar Čestmír
Description:
The project explores novel thermoelectric materials for the conversion of the waste heat to electric energy. Considering the price, processing and potential toxicity we will focus on optimization the thermoelectric behaviour of sulfide ternary systems based on copper, iron and chromium. As high absolute value of thermoelectric coefficient, low electrical resistance and low thermal conductivity are prerequisites of effective thermoelectric conversion, the interplay between magnetic interactions, crystal structure and thermoelectric response due to the constitutive role of magnetic metals will be studied. As optimization routes towards better materials both chemical doping and nanostructuring will be used, starting from pristine materials in single crystalline form. In addition to chemical, morphological and thermoelectric properties the materials will also be examined in high magnetic field and using special techniques, including high pressures and Mössbauer spectroscopy. Experiment will be supplemented by theoretical calculations of electronic structure and transport coefficients.
The project explores novel thermoelectric materials for the conversion of the waste heat to electric energy. Considering the price, processing and potential toxicity we will focus on optimization the thermoelectric behaviour of sulfide ternary systems based on copper, iron and chromium. As high absolute value of thermoelectric coefficient, low electrical resistance and low thermal conductivity are prerequisites of effective thermoelectric conversion, the interplay between magnetic interactions, crystal structure and thermoelectric response due to the constitutive role of magnetic metals will be studied. As optimization routes towards better materials both chemical doping and nanostructuring will be used, starting from pristine materials in single crystalline form. In addition to chemical, morphological and thermoelectric properties the materials will also be examined in high magnetic field and using special techniques, including high pressures and Mössbauer spectroscopy. Experiment will be supplemented by theoretical calculations of electronic structure and transport coefficients.
