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Information × Registration Number 0223U002095, 0120U102043 , R & D reports Title Crystal-chemical approach to the development of inorganic quantum materials popup.stage_title Head Akselrud Lev H., Registration Date 09-02-2023 Organization Ivan Franko National University of Lviv popup.description2 Object – multi-component compounds with metallic and semi-metallic components, which exhibit unique physical properties and can be used for low-temperature spintronics, as topological insulators and quantum materials. Aim of the work –synthesis of new inorganic compounds for quantum materials and determination of their crystallographic characteristics, quantitative parameters of chemical bonding, magnetic and transport properties. The investigation is aimed at establishing a general system and algorithms for the relationship between structural features, character of chemical bonds and physical properties – the basis for development of new generation quantum materials. Methods – synthesis of alloys, heat treatment, differential scanning calorimetry, X-ray phase, microstructural, spectral and structural analysis, electronic structure calculation, measurement of magnetic, electrical and transport properties. The new structurally modified compounds were synthesized, both in the form of high-quality single crystals and powdered samples. EuPd3Ga2 – candidate in quantum materials; in the range of 0–15 K can be a reservoir of plane-type skyrmions. For SmGe3, a condition for the formation of a superstructure was found, which is important for inducing quantum phase transformations. BiI3 is a typical topological insulator of forced semimetal type with degeneracy at the Fermi level. The structure of the Mg9Ge5.1 is non-commensurate modulated, whereas Yb3Co4Ge13 is the first representative of a 3-dimensionally modulated structure among IMC. Modulation and valence fluctuations of Yb are related and are the basis for the controlled change of properties at low temperatures. Y5Ir6Sn18 is a type II superconductor with Tc = 2.1 K, for which partial disorder does not lead to loss of superconductivity. The modulated Fe0.62Te is a semiconductor with a narrow band gap. More than four dozen objects were studied. A program for integration the density of states distribution was developed. Product Description popup.authors Akselrud Lev Belan Bohdana Broda Anastasiya Gnilitskyi Yaroslav Horyn Andriy Horyacha Myroslava Dankevych Roman Demchenko Pavlo Dzevenko Mariya Dominyuk Nataliya Zaremba Nazar Zaremba Oksana Zelinskiy Anatoliy Konyk Mariya Kuzhel Bohdan Manyako Mykola Matviyishyn Lyudmyla Matselko Oksana Muts Nataliya Oshchapovskyy Ihor Pukas Svitlana Semuso Nataliya Serkiz Roman Tarasiuk Ivan Tokaychuk Yaroslav Shpyrka Zinoviya popup.nrat_date 2023-02-09 Close