News

  • Stronger and more failure-resistant with three-dimensional serrated bimetal interfaces – Acta Materialia 166, 231-245 (2019)

    Kong X. F.; Beyerlein Irene J.; Liu Z. R.; Yao B. N.; Legut Dominik; Germann Timothy Clark; Zhang Ruifeng. Stronger and more failure-resistant with three-dimensional serrated bimetal interfaces. Acta Materialia. 2019, vol. 166, s. 231-245. ISSN 1359-6454, eISSN 1873-2453, DOI: http://doi.org/10.1016/j.actamat.2018.12.051. The article published in Acta Materialia 2019, vol. 166, p. 231-245 is a comprehensive state-of-the-art study of the current status of knowledge of a new interface engineering strategy for designing atomically serrated interfaces to... Read More

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  • Rational Design of Flexible Two-Dimensional MXenes with Multiple Functionalities – Chemical Reviews 23, 119 (2019)

    Fu Zhongheng; Wang Ning; Legut Dominik; Si Chen; Zhang Qianfan; Du Shiyu; Germann Timothy C.; Francisco Joseph S.; Zhang Ruifeng. Rational Design of Flexible Two-Dimensional MXenes with Multiple Functionalities. Chemical Reviews. 2019, vol. 119, issue 23, s. 11980-12031. ISSN 0009-2665, eISSN 1520-6890, DOI: https://doi.org/10.1021/acs.chemrev.9b00348. The Review published in Chem. Rev., 119, 23, 11980–12031 (2019) is a comprehensive state-of-the-art study of the current status of knowledge of MXenes, a new class of 2D materials discovered within... Read More

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  • How to access MeDeA 3.2

    1) For running VNC on cluster ssh -i id_rsa -L 5999:localhost:5999 user@loginN.cluster.it4i.cz -X where id_rsa is your id_rsa for accounts on IT4I clusters and N is number from 1-4 depending how many login nodes appropriate cluster has. 2) Here two options: a) for the very first time, b) for second and other time with that one forgets to kill VNC server... 2a) Running VNC server for the very first time VNCpasswd and give password... needed... Read More

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  • New type of coupled electronic-structural waves discovered in magnetite – Nature Physics 16, 541–545 (2020)

    New type of coupled electronic-structural waves discovered in magnetite – Nature Physics 16, 541–545 (2020)

    An international team of scientists uncovered exotic quantum properties hidden in magnetite, the oldest magnetic material known to mankind. The study reveals the existence of low-energy waves that indicate the important role of electronic interactions with the crystal lattice. This is another step to fully understand the metal-insulator phase transition mechanism in magnetite, and in particular to learn about the dynamical properties and critical behavior of this material in the vicinity of the transition temperature.... Read More

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  • JOBS: Bachelor, Master, PhD at IT4Innovations

    Looking for a new opportunity? Bachelor, diploma, and PhD work offer including scholarship. We are currently seeking for highly motivated and talented students to work within our group on number of topics related to research topics we acquired recently from Czech Science Foundations and other sources (Ministry of Education, H2020 projects etc.). The description of the positions related to the projects are here.  Our benefits are: international environment (English is a common language among group... Read More

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  • Lattice dynamics and thermal properties of thorium metal and thorium monocarbide – Phys. Rev. B 101, 075117, 2020.

    Thorium is a chemical element that is beginning to attract attention because of its potential use as a nuclear fuel. It is not easy to carry out experiments because of its radioactive nature, and therefore theoretical works are highly appreciated. Thorium contains only a small number of the 5f states, and it is generally accepted that these states are itinerant, that they form a chemical bond, and that their nature does not need to be corrected with... Read More

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  • ARTICLE: Pressure variations of the 5f magnetism in UH3

    Pressure variations of the Curie temperature of the 5f ferromagnet β-UH3 were studied using the Mo-alloyed hydride (UH3)0.82Mo0.18, which is stable in air and has very similar TC and magnetization per U atom. By means of ac magnetic susceptibility a linear decrease of TC was observed for pressures up to 3.2 GPa. The coefficient dTC/dp = −2.05 K/GPa gives dlnTC/dp = 1/T*dTC/dp ≈ −0.011 GPa−1. This value is smaller than expected for a 5f-band ferromagnet with relatively short U-U distances and suggests that UH3 may be more localized than expected. Among AnX compounds,... Read More

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  • ARTICLE: XPS, UPS, and BIS study of pure and alloyed β-UH3 films: Electronic structure, bonding, and magnetism

    Uranium hydride films with the β-UH3 structure were successfully synthesized using reactive sputter deposition. Their composition can be modified, if cooling the substrate to 177 K, by incorporating Mo as alloying element, in analogy to bulk nanocrystalline (UH3)-Mo hydrides. The films were in detail studied by in situ XPS (4f, 5d, 6p, valence band), valence-band UPS, and BIS, revealing variations of electronic structure with respect to U metal, confronted with ab initio calculations. We could identify certain ionicity in... Read More

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  • ARTICLE: Crystal Structure and Magnetic Properties of Uranium Hydride UH2 Stabilized as a Thin Film

    A new type of uranium binary hydride, UH2, with the CaF2 crystal structure, was synthesized in a thin-film form using reactive sputter deposition at low temperatures. The material has a grain size of 50–100 nm. The lattice parameter a = (535.98 ± 0.14 pm) is close to that in known Np (534.3 pm) and Pu (535.9 pm) iso-types. UH2 is a metallic ferromagnet with the Curie temperature TC ≈ 120 K. A very wide hysteresis loop indicates strong magnetocrystalline anisotropy. X-ray... Read More

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