6533b7cefe1ef96bd1257210
RESEARCH PRODUCT
Heat capacity and thermal conductivity of multiferroics Bi1-xPrxFeO3
S. A. SadykovM. KundzinshS. V. KhasbulatovZ. M. OmarovS. N. KallaevK. BormanisR. G. MitarovL. A. Reznichenkosubject
heat capacityMaterials sciencePraseodymiumMultiferroicschemistry.chemical_elementThermodynamics02 engineering and technology01 natural sciencesHeat capacityBismuthThermal conductivity0103 physical sciencesMaterials Chemistry:NATURAL SCIENCES:Physics [Research Subject Categories]Multiferroicsthermal conductivityElectrical and Electronic Engineering010302 applied physicsAtmospheric temperature range021001 nanoscience & nanotechnologyCondensed Matter PhysicsElectronic Optical and Magnetic MaterialschemistryControl and Systems EngineeringCeramics and Composites0210 nano-technologydescription
The heat capacity and thermal conductivity of multiferroics Bi1–xPrxFeO3 (0 ≤ x ≤ 0.50) has been studied in the temperature range of 130–800 K. A slight substitution of praseodymium for bismuth is found to lead to a noticeable shift of the antiferromagnetic phase transition temperature whilst the heat capacity increases. The temperature dependences of the heat capacity and thermal conductivity exhibit additional anomalies during phase transitions. The experimental results suggest that the excess heat capacity can be attributed to the Schottky effect for three-level states. The basic mechanisms of the heat transfer of phonons are highlighted and the dependence of the mean free path on temperature is determined.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-02-12 |