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The Institute's Managing Director


Upcoming talks:
today
16:00
Dr. Vladimir Hutanu (RWTH Aachen und Forschungszentrum Jülich)
New single crystal diffractometer with polarised neutrons POLI at MLZ as a versatile tool for the detailed investigation of magnetic structures

Polarized neutron diffraction (PND) is a powerful method to investigate magnetic structures. It gives unique access to contributions from nuclear and magnetic scattering, their interfer-ence terms, and magnetic chirality and permits to distinguish between them. In contrast to the non-polarized neutron diffraction, where the scattered intensity depends as square on the magnetic structure factor, PND has a linear nuclear-magnetic interference term as part of the scattered intensity. This increases the precision in the determination of the ordered magnetic moment for at least one order of magnitude. Born in the late 50s of the last century and de-veloped over decades by a small groups of devoted experts, PND became nowadays a wide spread, well established, and recognized technique to answer difficult scientific questions about the detailed magnetic ordering in topic materials, often intractable with other methods. Recently newest member of such instrumentation family POLI (Polarisation Investigator) has been built and commissioned on neutron source “Heinz Maier-Leibnitz” in Garching (MLZ). POLI is the first instrument routinely using 3He spin filters both to produce and to analyze the neutron polarization in combination with double focusing non-polarized mono-chromators. This results in a relatively high flux of the polarized neutrons of the short wave-length and improved resolution in comparison with other similar instruments. Three different experimental techniques are implemented (or under development) on POLI: a) Spherical neu-tron polarimetry (SNP), called also 3D polarization analysis, using the third generation polar-imeter device Cryopad, b) classical flipping ratio (FR) technique in applied magnetic field and c) non-polarised neutron diffraction under extreme conditions (high/low temperatures, magnetic/electric fields, pressure and their combination). We will present recent examples of using these techniques on POLI for the detailed determination of the magnetic structures in multiferroics, superconductors, heavy fermion compound and other interesting magnetic materials.

Seminar TRR80, room: S-288
Thursday
19:00
Dr. Matthias Schreck (Universität Augsburg)
Diamant: Faszinierendes Objekt der Begierde und Hightech-Werkstoff
Faszination Mathematik und Physik, room: Zeughaus, Reichlesaal 116
Monday
17:15
Prof. Dr. Roland Fischer (TU München)
Photo- and Electroactive Nanocomposites Derived From Metal-Organic Frameworks
Chemisches Kolloquium, room: T-1004

Physik-Bachelor und -Master reakkreditiert


asiin-siegel_2016
On the basis of the successful on-site review meeting in December 2015, the accreditation of our B.Sc. and M.Sc. 'Physics' was extended by ASIIN, thereby confirming the high quality of our study programs. - Meanwhile (as of 30 Sep 2016) the accreditation was extended until 2022, i.e., the maximally possible duration.