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| REBCOAPL – REBCO masívne supravodiče na báze Y, Gd, Sm a Eu pre praktické aplikácie | |
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| Program: | SRDA |
| Project leader: | Ing. Diko Pavel, DrSc., akademik US Slovenska |
| Annotation: | The project is focused on research and development of selected REBCO bulk singlegrain superconductors (BSS).We will examine YBCO, GdBCO, SmBCO and EUBCO systems, which are currently preferred in terms ofmastering their production technology and specific applications. Based on our latest results, we will focus on thealloying of LREBCO (LRE- light rare earths) with elements that suppress Ba/LRE substitution in the crystal lattice,the addition of nanocrystalline BaCeO3, the bimodal size distribution of pining centres and the configuration ofholes in REBCO BSS. We will apply the research results in the development of BSS production technology withoptimized superconducting and mechanical properties. The use of the research and development results achievedwithin the project is expected by the manufacturer BSS CAN Superconductors s.r.o. |
| Project webpage: | https://websrv.saske.sk/uef/oddelenia-a-laboratoria/laboratorium-materialovej-fyziky/ |
| Duration: | 1.7.2022 – 30.6.2026 |
| Funkčné nano- a mikrodrôty s význačnými vlastnosťami. | |
| Functional nano- and microwires with outstanding properties | |
| Program: | VEGA |
| Project leader: | RNDr. Kováč Jozef, CSc. |
| Annotation: | The project is focused on the development and characterization of functional nano and microwires, which are characterized by distinctive features physical properties in the form of shape memory phenomenon, magnetocaloric phenomenon, magnetic bistability, etc. These properties can be used with advantages in the construction of miniature sensors and actuators for temperature, elongationetc. Scalable methods will be used to produce these materials (electrodeposition, Taylor Ulitovski method), which enable the preparation of a large number of samples and thus an easy transition to applications. The goal is to examine the most important parameters determining the functional properties, which enables the following phenomenamodify from the point of view of working scope and amplitude. The shape of the wire brings shape to the mentioned phenomena anisotropy, which can highlight the functional properties in the selected direction and facilitates the subsequent application of the listed materials. |
| Duration: | 1.1.2023 – 31.12.2025 |
| BULKREBCO – Štruktúra, supravodivé a mechanické vlastnosti masívnych REBCO supravodičov | |
| Structure, superconducting and mechanical properties ov bulk REBCO superconductors | |
| Program: | VEGA |
| Project leader: | Ing. Diko Pavel, DrSc., akademik US Slovenska |
| Annotation: | The project is focused on the research of the influence of the structure on the superconducting and mechanical properties of the REBCO bulksingle grain superconductors (BSS). The effect of the bimodal particle size distribution of RE211 particles in the REBCO single crystal will be studied, as well as the effect of alloying. Acquiredthe knowledge will serve to optimize the preparation parameters and structure of REBCO BSS so that they are achievedthe combination of a high value of the trapped magnetic field and levitation force with increased mechanicalstrength. We will use experimental methods of powder metallurgy, bulk single crystal growth, X-ray diffraction, light and electron microstructure analysis, magnetization measurements, measurementsof trapped magnetic field and strength measurement. The project will be solved in cooperation withleading foreign laboratories within the formal (SIT Tokyo, JTU Shanghai, CAN Superconductors) andinformal (University of Cambridge, CRISTMAT Caen, FzÚ Praha, ) cooperation. |
| Project webpage: | https://websrv.saske.sk/uef/oddelenia-a-laboratoria/laboratorium-materialovej-fyziky/ |
| Duration: | 1.1.2022 – 31.12.2024 |
| BMREBCO – Vývoj REBCO supravodičov pre biomedicínske aplikácie | |
| Development of REBCO superconductors for biomedical applications | |
| Program: | SRDA |
| Project leader: | Ing. Diko Pavel, DrSc., akademik US Slovenska |
| Annotation: | The project focuses on the development of REBCO bulk singlegrain superconductors (BSS) for biomedical applications. Their use is envisaged by the small enterprise CRYOSOFT s.r.o. Košice for design of equipments for the magnetic separation of cells and for the magnetic transport of drugs. For these applications, REBCO BSS will be developed for use at temperatures that can be achieved by cryocooling (30-50K). We will study YBCO, SmBCO and GdBCO systems that can meet the requirements for the expected applications. The raw material price for YBCO BSS is lower than for SmBCO and GdBCO BSS, however, the SmBCO and GdBCO are reaching higher values of trapped magnetic field. Within the project solution, the optimized composition and the preparation technology of REBCO BSS will be found in order to achieve efficient pining in high magnetic fields below temperature of liquid nitrogen, which is a prerequisite for achieving high critical current density and high trapped magnetic field. The critical current density will be improved through chemical pining, refining RE211 particles, adding nanofibers. We will take advantage of our previous results in basic and applied research of REBCO BSS, some of which are patent-protected. |
| Project webpage: | https://websrv.saske.sk/uef/oddelenia-a-laboratoria/laboratorium-materialovej-fyziky/ |
| Duration: | 1.8.2018 – 30.6.2022 |