High-pressure with neutrons at the MLZ

  High-pressure cell Copyright: © IfK

The aim of the project is to develop and optimize the high-pressure sample environment on four different instruments at the Heinz Maier-Leibnitz Center (MLZ) in Garching: MIRA, DNS, POLI, and HEiDi. The project strengthens the collaboration between two university groups (RWTH Aachen University and the Technical University of Munich) and the Jülich Center for Neutron Science at the MLZ. The technical goals include

(1) the implementation of multi-parametric studies under high pressure and in a magnetic field as a function of temperature using a position-sensitive detector (PSD) on POLI and HEiDi,

(2) the development of suitable software for the data analysis of PSD data with special consideration of effects that can be attributed to the high-pressure sample environment ("diamond dips")

(3) the development and manufacturing of transmission diamond-anvil cells and so-called "opposed-anvil" cells for POLI, HEiDi and MIRA, as well as the

(4) development, production and optimization of clamp cells for POLI, MIRA, and DNS.

  High-pressure cells Copyright: © IfK High-pressures for single-crystal diffraction: panDAC (left), memDAC (center), clamp cell (right)

Our goal is to examine one and the same sample, ideally in the same cell, with the various experimental methods available on the four instruments. This approach offers the advantage that the high-pressure sample environment can be shared between the complementary measuring stations at the MLZ. The successful implementation of high-pressure technology serves to attract a new, broad and multidisciplinary user community and increases the international competitiveness of the MLZ in an international comparison. The availability of a sample environment for studies with simultaneous variation of pressure, temperature and magnetic field enables the processing of new, scientific questions such as e. g. pressure-induced quantum phenomena or multiparametric studies on functional materials.

Team:

Dr. Martin Meven (Instrument responsible scientist HEiDi@MLZ, project manager)
Dr. Andrzej Grzechnik (Project scientist/Development of high-pressure cells, RWTH)
Muni Kishore Babu Poli, M. Sc. (Project technician, RWTH@MLZ)
Wolfgang Luberstetter (Instrument technician HEiDi/POLI@MLZ)

Team of other institutions:

Dr. Robert Georgii (Instrument responsible scientist MIRA@MLZ, TUM)
Dr. Yixi Su (Instrument responsible scientist DNS@MLZ, JCNS)
Prof. Dr. Karen Friese (Deputy director JCNS-2)
Andreas Eich (PhD student JCNS)

Publications:

Eich, Andreas; Hölzle, M.; Su, Y.; Hutanu, Vladimir; Georgii, R.; Beddrich, L.; Grzechnik, Andrzej: Clamp cells for high pressure neutron scattering at low temperatures and high magnetic fields at Heinz Maier-Leibnitz Zentrum (MLZ). High Pressure Research (2020), 1-9. doi.org/10.1080/08957959.2020.1841759

Grzechnik, Andrzej; Meven, Martin; Paulmann, C.; Friese, Karen: Combined X-ray and neutron single-crystal diffraction in diamond anvil cells. J. Appl. Cryst. 53(1) (2020), 1 - 6. DOI: 10.1107/S1600576719014201

Eich, Andreas; Grzechnik, Andrzej; Caron, L.; Cheng, Y.; Wilden, J.; Deng, H.; Hutanu, Vladimir; Meven, Martin; Hanfland, M.; Glazyrin, K.; Hering, P.; Herrmann, M. G.; Haddouch, M. A.; Friese, Karen: Magnetocaloric Mn5Si3 and MnFe4Si3 at variable pressure and temperature. Mater. Res. Express 6 (2019), 096118; DOI: 10.1088/2053-1591/ab33b3

Cheng, Yao; Brenk, Janik; Friedrich, Bernd; Perßon, Jörg; Maraytta, Nour; Gibson, James S. K.-L.; Korte-Kerzel, Sandra; Roth, Georg; Su, Yixi; Zhu, Fengfenz, Paulmann, Carsten; Grzechnik, Andrzej: Ni-Cr-Al alloy for neutron scattering at high pressures. Materials science and technology 36 (2019), 949-954. DOI: 10.1080/02670836.2019.1578077

Grzechnik, Andrzej; Meven, Martin; Friese, Karen: Single-crystal neutron diffraction in diamond anvil cells with hot neutrons. Journal of Applied Crystallography 51 (2018), 351-356. DOI: 10.1107/S1600576718000997

  BMBF Copyright: © BMBF

Funding:

Bundesministerium für Bildung und Forschung, project executing organization DESY
Title of project: Entwicklung und Optimierung von Hochdruck-Probenumgebung für polarisierte und unpolarisierte Neutronendiffraktion und Spektroskopie an den Instrumenten HEiDi, POLI, MIRA und DNS am Heinz Maier-Leibnitz Zentrum
Grant Nr.: 05K19PA2
Project period: 01.07.2019 – 30.06.2022

  JCNS Copyright: © JCNS

Jülich Center for Neutron Science, Forschungszentrum Jülich