Juliusz Leszczyński

ORCID: 0000-0002-7644-7760
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Research Areas
  • Advanced Thermoelectric Materials and Devices
  • Chalcogenide Semiconductor Thin Films
  • Rare-earth and actinide compounds
  • Heusler alloys: electronic and magnetic properties
  • Thermodynamic and Structural Properties of Metals and Alloys
  • Semiconductor materials and interfaces
  • Phase-change materials and chalcogenides
  • Thermal Radiation and Cooling Technologies
  • Transition Metal Oxide Nanomaterials
  • Thermal Expansion and Ionic Conductivity
  • Thermal properties of materials
  • nanoparticles nucleation surface interactions
  • Advanced Thermodynamics and Statistical Mechanics
  • Gas Sensing Nanomaterials and Sensors
  • Inorganic Chemistry and Materials
  • Iron-based superconductors research
  • Advanced ceramic materials synthesis
  • Advanced Condensed Matter Physics
  • Advanced Thermodynamic Systems and Engines
  • Electronic and Structural Properties of Oxides
  • Mechanical and Thermal Properties Analysis
  • Catalysis and Oxidation Reactions
  • Optical properties and cooling technologies in crystalline materials
  • Copper-based nanomaterials and applications
  • Thermography and Photoacoustic Techniques

AGH University of Krakow
2013-2024

Jagiellonian University
2024

Institut Jean Lamour
2009-2013

Université de Lorraine
2013

Centre National de la Recherche Scientifique
2009-2013

École Nationale Supérieure des Mines de Nancy
2007-2010

Laboratoire de Physique et d’Étude des Matériaux
2009

University of Łódź
2000

Thermal durability of CoSb3 in vacuum, helium and air was investigated over the temperature range 20–850 °C. A scanning electron microscope (SEM) X-ray powder diffraction technique were used to investigate microstructure carry out phase analysis degradation products. The a non-isothermal isothermal decomposition oxidation powders polycrystalline samples performed using simultaneous TG/DTA technique. More detailed studies carried on 400–600 It established that products are CoSb2 volatile...

10.1007/s10973-011-1461-5 article EN cc-by-nc Journal of Thermal Analysis and Calorimetry 2011-03-26

The thermoelectric and thermodynamic properties of polycrystalline InxCo4Sb12 (0.0 ⩽ x 0.26) skutterudites were investigated analysed between 2 800 K by means electrical resistivity, thermopower, thermal conductivity specific heat measurements. Hall effect, sound velocity expansion measurements also made in order to gain insights into the transport elastic these compounds. impact In filling on crystal structure as well dynamics atoms tracked down 4 using powder neutron diffraction...

10.1088/0022-3727/46/49/495106 article EN Journal of Physics D Applied Physics 2013-11-19

The aim of the work was to obtain copper (I) selenide Cu2Se material with excellent thermoelectric properties, synthesized using hydrothermal method and densified by spark plasma sintering (SPS) method. Chemical phase composition studies were carried out X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM) methods. Measurements transport i.e., electrical conductivity, Seebeck coefficient, thermal conductivity in temperature range from 300 965 K out. Based on these...

10.3390/ma14133650 article EN Materials 2021-06-30

The work presents experimental results of performance tests and theoretical calculations for the thermoelectric generator TEG fitted in exhaust system a 1.3 dm3 JTD engine. Benchmark studies were carried out to analyze modules total efficiency. Additionally investigation combustion engine’s power drop casued by gasesflow resistance is presented. detailed performed using new prototype equipped with 24 BiTe/SbTe nominal 168 W. prototypical device generates maximal of200 Wfor exhaus gases...

10.19206/ce-116986 article EN cc-by Silniki Spalinowe/Combustion Engines 2013-09-01

High temperature corrosion of thermoelectric materials is one the most important issues linked with their application for power generation, especially in terrestrial conditions. The high chemical affinity elements composing material to oxygen results continuous degradation at temperatures state-of-the-art materials. This issue also well recognized case antimonide skutterudites. simplest way protect against this process use coatings. Complicated geometry module favors coatings that can be...

10.1063/1.5097284 article EN Journal of Applied Physics 2019-06-07

Zintl phases have recently been identified as potential thermoelectric materials typified by the discovery of a high figure merit in Yb14MnSb11 compound above 1000 K. We report on synthesis and properties measurements over wide temperature range (300–1000 K) other exhibiting complex crystalline structure, namely, Mo3Sb7 its related compounds Mo3−xRuxSb7. While binary displays low values due to metallic nature, we show that partial substitution Mo Ru significantly improves value reach 0.45 at...

10.1063/1.3097384 article EN Journal of Applied Physics 2009-04-15

The electrical resistivity of thin film metal oxide photoanodes in the photoelectrochemical cells, PEC, for hydrogen generation, importance which should not be neglected design and construction water-splitting devices, is found to affected by departure from stoichiometric composition thickness. Here, we propose use TiO2/ITO cells. TiO2−x films with x indicating a have been prepared dc magnetron sputtering deposition rate controlled optical emission spectroscopy, OES. Photoanode properties...

10.1007/s11664-019-07266-8 article EN cc-by Journal of Electronic Materials 2019-05-16

Neutron diffraction experiments and Korringa-Kohn-Rostoker with coherent potential approximation electronic band structure calculations as well electrical resistivity measurements have been performed on polycrystalline Mo(3-x)Ru(x)Sb(7) samples for 0 < or = x 1. studies undertaken at room temperature extended down to 4 K get a better understanding of the crystalline modifications Ru content increases. Both structural chemical characterizations unambiguously revealed solubility limit atoms...

10.1021/ic900171u article EN Inorganic Chemistry 2009-06-08

High efficiency segmented thermoelectric unicouples STUs made of Bi2Te3 and CoSb3-based alloys have been developed. The performance parameters elements at selected temperatures ranging from 288 to 673K were tested on the constructed set-up. Characterization electrical resistances contacts materials was by a scanning microprobe (STM). extended numerical model STU, which takes into account i.e. thermal effects junctions, as well as, inside segments (Thomson effect) results calculations...

10.1063/1.4731597 article EN AIP conference proceedings 2012-01-01

In the type I clathrates Ba8TM x Ga y Ge46–x–y (TM = group 10 to 12 elements) where some of Ge framework atoms are substituted by Zn, Cu or Ag, transition-metal elements prefer occupy 6c site. Preliminary band-structure calculations showed that this substitution implies modification electronic bands in vicinity energy gap. By appropriate tailoring band structure, improved thermoelectric properties can be obtained. More detailed full-potential linearized augmented plane wave (FP-LAPW) method...

10.1007/s11664-016-4669-0 article EN cc-by Journal of Electronic Materials 2016-06-21

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation K. T. Wojciechowski, R. Zybala, J. Leszczynski, P. Nieroda, M. Schmidt, Merkisz, Lijewski, Fuc; Analysis of possibilities waste heat recovery in off-road vehicles. AIP Conf. Proc. 26 June 2012; 1449 (1): 501–504. https://doi.org/10.1063/1.4731603 Download citation file: Ris (Zotero) Reference Manager EasyBib...

10.1063/1.4731603 article EN AIP conference proceedings 2012-01-01
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