Perovskitovské tenké vrstvy a štruktúry vhodné pre modern elektroniku a senzoriku
Perovskite thin films and structures for modern electronics and sensorics
Program: VEGA
Project leader: RNDr. Španková Marianna PhD
Annotation: We prepare different types of perovskite films -ferromagnetic, superconducting, dielectric- (thickness up to 100nm) and micro- and nano structures. YBa2Cu3Ox superconducting microstrips will be irradiated by electrons (30keV) with the aim to create channels for easy vortex motion. We also focus on detailed study of Si/dielectric layerinterface using unconventional materials (SrO, TiN) with the aim to enable epitaxial growth of buffer layersnecessary for realization of uncooled microbolometers on the base of La0.67Sr0.33MnO3 films working and atfrequencies in THz range. Beside the Bi4Ti3O12 studied so far different types of other buffer layers will be testedin order to develop new types of bolometers. We continue in study of perovskite superconductor S/ferromagnet Fand S/F/S structures with the aim to resolve the phenomenom of S/F thin films interaction (proximity effect). Theimplementation of pi-type Josephson junction in digital and quantum circuits may solve some problems of superconducting qubits.
Duration: 1.1.2018 – 31.12.2021
2D materiály a iónové kvapaliny pre využitie v mikroelektronike a senzorike
2D materials and ionic liquids in microelectronics and sensors
Program: VEGA
Project leader: Mgr. Sojková Michaela PhD.
Annotation: Two-dimensional (2D) materials and nanoparticles are a very hot topic. Project proposal builds on our knowledgegathered so far and it is focused on fabrication of 2D materials and nanoparticles (using ionic liquids ILs) and thecombination of three materials. The aim of the project is the fabrication of experimental materials and devices forsensors. Concerning 2D materials, we will focus on the optimization of the growth parameters of thin films ofselected materials. In field of nanoparticles, we will continue to prepare facetted metallic and carbonnanoparticles. Facetted ones will be used for the decoration of thin film 2D materials influencing thus the electricaltransport within the film, which is applicable e. g. in gas sensors. Carbon nanoparticles are fluorescent whichimplies their suitability for the use in fluorescence microscopy. The ionic liquids will be used both for preparationof nanoparticles in vacuum and also for formation of EDL gate to control the electrical transport in 2D materials.
Duration: 1.1.2017 – 31.12.2020
MOSSLE – Modifikácia YBCO tenkovrstvových štruktúr nízkoenergetickými elektrónmi pre supravodivú elektroniku
Modification of YBCO thin film structures using low energy electron beam processing for superconducting electronics
Program: SRDA
Project leader: Ing. Chromik Štefan DrSc.
Annotation: The proposed project deals with the effect of low energy electron irradiation of YBCO microstrips with the aim to fabricate channels for easy vortex motion. Detailed analyses will be focused on the subtle balance of many processes involving kinetic (kick-off) process, thermal activation of oxygen as well as ordering of Cu-O chains by incident electrons. The study of these phenomena together with the effect on introducing of artificial pinning in the illuminated channels, having influence on the dynamics of the vortices in the channel, lead to the contribution to basic reserach and also to the realization of functional model structure for the application in superconducting electronics.
Duration: 1.7.2017 – 31.12.2020