Fyzikální ústav Akademie věd ČR

The research area of the department is focused mainly on study of magnetic and transport properties of nanosized materials (nanoparticles and nanocomposites, carbon-based nanoparticles) and systems with strongly correlated electrons. The key experimental centers of the department are the Joint Laboratory for Magnetic Studies and the Joint Low Temperature Laboratory. Department also participate in the operation of the helium liquefier in Troja.

Department research activities include:

• studies of magnetic properties of (super)paramagnetic nanoparticles for biomedical applications
• studies of magnetic and transport properties of carbon-based nanomaterials (nanotubes, graphene, hybrid systems of graphene-nanoparticles)
• studies of anisotropy in magnetic and transport properties on systems with correlated 4f and 5f electrons
• characterization of nanostructures and detection of magnetic moments by the Scanning Probe Microscopy techniques (AFM/MFM)
• studies of ionic valence states, local symmetry, defects in crystal lattice, magnetic ordering and phase composition using the Mössbauer spectroscopy 57Fe in wide temperature range and magnetic fields up to 6 T
• research on fundamental superfluidity and quantum turbulence
• studies of materials under extreme conditions (high pressures up to 12 GPa, ultralow temperatures < 100 mK, magnetic fields up to 14 T, pulsed magnetic field up to 80 T in cooperation with Hochfeld-Magnetlabor in Dresden)
• studies of structure and magnetic ordering with use of neutron diffraction, magnetic circular dichroism and other methods based on the scattering of synchrotron radiation

News

• 1.1. 2013 - Department of magnetic nanosystems became a successor of the reorganized Department of magnetism and low temperatures.
• RNDr.Simona Kubíčková was awarded by student prize Best poster award in ICAME 2013 for poster In-field dependence of the spin canting angle in maghemite nanoparticles in September 2013.
• Ing.Denis Gorbunov was awarded by extraordinary grant from UniCredit Bank (more here) in October 2013.

Significant Articles

• E.A. Tereshina, O. Isnard, A. Smekhova, A.V. Andreev, A. Rogalev and S. Khmelevskyi, Experimental and theoretical study of magnetic ordering and local atomic polarization in Ru-substituted Lu₂Fe₁₇, Phys. Rev. B 89 (2014) 094420.
• D.I. Gorbunov, S. Yasin, A.V. Andreev, Y. Skourski, Z. Arnold, S. Zherlitsyn and J. Wosnitza, High-field magnetization and magnetoelasticity of single crystalline HoFe₅Al₇, J. Phys.: Condens. Matter 26 (2014) 136001.
• S. Kubickova, J. Plocek, A. Mantlikova and J. Vejpravova, Nanocomposites of monodisperse nanoparticles embedded in high-K oxide matrices – a general preparation strategy, RSC Adv. 4 (2014) 5113.
• B. Pacakova, J. Lancok, M. Klementova and J.Vejpravova, Temperature dependent rotation of the uniaxial easy axis of magnetization in granular SiO₂–(Co/Fe/CoFe₂)–Si(1 1 1) multilayers, Appl. Surf. Sci. 289 (2014) 257.
• O. Frank, J. Vejpravova, V. Holy, L. Kavan and M. Kalbac, Interaction between graphene and copper substrate: The role of latice orientation, Carbon 68 (2014) 440.
• A.V. Andreev, S. Yasin, Y. Skourski, A.A. Zvyagin, S. Zherlitsyn and J. Wosnitza, Magnetic and magnetoelastic properties of UCo₂Si₂ as studied by high-field magnetization and ultrasound measurements, Phys. Rev. B 87 (2013) 214409.
• B. Pacakova Bittova, M. Kalbac, S. Kubickova, A. Mantlikova, S. Mangold and J. Vejpravova, Structure and magnetic response of a residual metal catalyst in highly purified single walled carbon nanotubes , Phys. Chem. Chem. Phys. 15 (2013) 5992.

Contacts

Department head: RNDr. Jana Vejpravová, Ph.D.
e-mail: vejpravofzu [dot] cz
telephone: +420 226 052 325

Deputy head of department: Ing. Josef Šebek, Ph.D.
e-mail: sebekfzu [dot] cz
telephone:: +420 221 912 772

Secretary: Romana Pohořalá
e-mail: pohoralafzu [dot] cz
telephone:: +420 226 052 416