VEKMAG

VEKMAG

VEKMAG is a Vector Superconducting Magnet station which is being jointly developed by Regensburg University, Free University Berlin, Ruhr University Bochum, and Helmholtz Zentrum Berlin. The instrument is located at Helmholtz Zentrum Berlin, in the experimental hall at the PM2 beamline of the synchrotron facility BESSY II.

List of publications
Station data
Temperature range 2-500K
Pressure Range For details contact the station manager.
Detector Photodiodes, drain current
Manipulators LT-VTI, FMR-VTI
Sample holder compatibility For details contact the station manager.
Beamline(s)

PM2-VEKMAG

Methods

XMLD, XMCD, RIXS

The instrument is designed for XAS/XMCD measurements, for resonant and-off resonant soft X-ray scattering methods, as well as for time resolved ferromagnetic resonance using XMCD, in high magnetic fields and for a  temperature range of  < 2 K - 500 K. It provides a 9T field in the beam direction, a 2T field in the horizontal plane and a 1T field in the perpendicular direction. A 1T vectorial field can be applied in all directions. The home beamline is located at the PM2 bending magnet at BESSY II.

Single axis magnetic fields:

-9 T along the beam direction

-2T perpendicular to the beam direction,  in the horizontal  plane

-1T  along the vertical direction.

Vectorial magnetic fields:

-2T in the horizontal plane

-1T in all directions

Temperature range:

-Low Temperature Variable Temperature Insert (LT-VTI) : 2K-350 K

-Ferromagnetic resonance Variable Temperature Insert (FMR-VTI) : 8K-500 K

For the parameters of the beamline see:

http://www.helmholtz-berlin.de/pubbin/igama_output?modus=einzel&sprache=en&gid=1937

Further info:

http://www.helmholtz-berlin.de/pubbin/news_seite?nid=14120&sprache=en

List Publications

  • A. Alhassanat, C. Gamer, A Rauguth, A. A. Athanasopoulou, J. Sutter, L. Volker, C. Luo, H. Ryll, F. Radu, A. A. Sapozhnik, T. Masho , E. Rentschler, and H. J. Elmers, Element-specific magnetic properties of mixed 3d-4f metallacrown, Phys. Rev. B 98, 064428 (2018)
  • L. Kipgen, M. Bernien, S. Ossinger, F. Nickel, A. Britton, L. M. Arruda, H. Naggert,  C. Luo, C. Lotze, H. Ryll, F. Radu, E. Schierle, E. Weschke, F. Tuczek, and W. Kuch, Evolution of cooperativity in the spin transition of an iron(II) complex on a graphite surface, Nature Communications 9, 2984 (2018)
  • R. Aeschlimann, D. Preziosi, P. Scheiderer, M. Sing, S. Valencia, J. Santamaria, C. Luo, H. Ryll, F. Radu, R. Claessen, C. Piamonteze,  M. Bibes,A Living-Dead Magnetic Layer at the Surface of Ferrimagnetic DyTiO3 Thin Films, Adv. Mater. 2018, 1707489 (2018)
  • A. A. Sapozhnik, C. Luo, H. Ryll, F. Radu, M. Jourdan, H. Zabel, and Hans-Joachim Elmers, Experimental determination of exchange constants in antiferromagnetic Mn2Au, Phys. Rev. B 97, 184416 (2018)
  • B. Hebler, P. Reinhardt, G. L. Katona, O. Hellwig, and M. Albrecht, Double exchange bias in ferrimagnetic heterostructures, Phys. Rev. B 95, 104410 (2017)
  • T. Noll and F. Radu, The Mechanics of the VEKMAG experiment, Proceedings of MEDSI2016, 370 (2017)