Bottyán, László

Bottyán, László External advisor, senior research scientist

Phone: +36 1 392 2761 Fax:     +36 1 395 9151 Email:    bottyan.laszlo (at) wigner.mta.hu

László Bottyán has been member of the Institute('s predecessor) since 1985. From 1995 to 2016 he was the head of the Nuclear Solid State Physics Laboratory (following the name change the Functional Nanostructures Research Group). His interest has been to apply nuclear methods (especially neutron and synchrotron radiation) in solid state physics and material science primarily in low-dimensional systems, such as thin multilayered films and nanostructures, membranes of biological interest as well as phenomena like interdiffusion, roughness correlations, finite size phenomena, superconductor/ferromagnet and ferromagnet/ferromagnet proximity and exchange bias effects.
He is coauthor of more than 130 research publications which received above 900 citations (as of May 2019).
As an unpaid volunteer, he is one of the beam line responsibles of the GINA neutron reflectometer. LB is member of the executive board of the Budapest Neutron Centre.
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News

1995	CSc (Candidate of the physical science), Hungarian Academy of Sciences, Budapest
1979	Dr. rer. nat., Roland Eötvös University of Sciences, Budapest
1974	Degree in physics, Roland Eötvös University of Sciences, Budapest
1969–1974	Physics student, Roland Eötvös University of Sciences, Budapest

Professional experience, positions, awards

2016-	(In partial retirement) External advisor in the Functional Nanostructures Research Group of the Wigner RCP
2013-2016	Head of the Functional Nanostructures Research Group in the Wigner RCP
2005-2012	Leader of a R/D project to build the GINA polarized-beam neutron reflectometer beamline at the Budapest Neutron Centre
2000-2013	Head of the Nuclear Solid State Physics Section of the KFKI Research Institute for Particle and Nuclear Physics of the Hungarian Academy of Sciences
1995–2000	Head of Solid State and Molecular Spectroscopy Section KFKI Research Institute for Particle and Nuclear Physics
1997–2005	Several month per year visits to the Instituut voor Kern- en Stralingsfysica KU Leuven, Belgium
1995-2016	Senior research scientist in KFKI Research Institute for Particle and Nuclear Physics
1992	Gyulai-Prize of the Roland Eötvös Physical Society, Budapest
1986–1995	Several month per year visits to the Physikalisches Institut der Universität Erlangen-Nürnberg, Germany
1985–1995	Research scientist in KFKI Research Institute for Particle and Nuclear Physics
1983–1984	Head of the X-ray Laboratory of the Research Institute for Non-ferrous Metals, Budapest
1982-83	Visiting scientist at the Physics Department of the University of Warwick, UK
1977–1981	Research scientist in the Research Institute for Non-Ferrous Metals, Budapest

Role in the scientific community, memberships

2012-	Executive Board member of the Budapest Neutron Centre
2013–2017	Member of the beam time proposal referee committee "Magnetism, elastic scattering" of MLZ Garching
2008-2012	Work package leader of the NAP2 project ("Visegrad Cooperation for Development and Application of Neutron Spectroscopy Techniques in Multidisciplinary Research")
2005-2008	Work package leader of the NAP1 project ("Visegrad Cooperation for Development and Application of Neutron Spectroscopy Techniques in Multidisciplinary Research")
2008-2012	Member of the Condensed Matter International Program Advisory Committee of the Joint Institute for Nuclear Research, Dubna, Russia
1986–	Member of the Roland Eötvös Physical Society

• Studies of membrane interactions with proteins
• Studies of interface asymmetry in metallic multilayers
• Transversal and lateral interface roughness in multilayers of large number of bilayers, resonance diffuse scattering
• Study of reciprocity and its violation in scattering experiments
• Application of waveguide-enhanced polarised neutron reflectometry for studying proximity effects in superconductor/ferromagnet heterostructures
• Theory of conversion electron Mössbauer spectroscopy (angular dependence, blackness and polarization effects)
• Development and application of (polarised) neutron reflectometry (PNR) using the GINA reflectometer at the Budapest Neutron Centre and other instruments at other European neutron sources for magnetic thin films and neutron optics devices
• Application of neutron- and Mössbauer reflectometry for diffusion studies in anisotropic and metastable compounds
• Study of perpendicular anisotropy multicomponent films and ion beam tailoring of their magnetic structure
• Development and application of Mössbauer polarimetry with laboratory sources and with synchrotron radiation
• Development and application of the grazing incident nuclear resonant scattering of synchrotron radiation (“Synchrotron Mössbauer Reflectometry”, SMR)
• Mössbauer studies of molecular magnets
• Mössbauer studies of high-T_c superconductors
• Studies of defect structure of alloys by positron annihilation spectroscopy
• NMR studies of electronic structure of molten alloys
• NMR studies of superionic conductors
• NMR studies of self-diffusion in dilute Al alloys