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@INPROCEEDINGS{Ptter:811992,
      author       = {Pütter, Sabine and Syed Mohd, Amir and Mattauch, Stefan
                      and Koutsioumpas, Alexandros and Weber, Alexander and
                      Schneider, Harald and Brückel, Thomas},
      title        = {{F}irst (quasi) in-situ neutron reflectivity measurements
                      on ultrathin magnetic films at {MARIA}},
      reportid     = {FZJ-2016-04293},
      year         = {2016},
      abstract     = {The magnetic neutron reflectometer with high incident angle
                      (MARIA) at the Heinz Maier- Leibnitz Zentrum (MLZ) in
                      Garching, Germany is a dedicated instrument for polarized
                      neutron reflectometry of thin films [1]. However, due to
                      limited space a UHV system for thin film growth and in-situ
                      measurements cannot be placed on-site.Recently, we have
                      solved this problem by developing a handy mini UHV chamber
                      which is capable for both, sample transfer and quasi in-situ
                      measurements at the neutron reflectivity instrument,
                      respectively. Quasi in-situ polarized neutron reflectivity
                      (PNR) measurements can be performed at room temperature in
                      magnetic fields of up to 600 mT. Our solution consists of a
                      DN CF-40 cube with two opposing sapphire windows for the
                      neutron beam, a combined non evaporable getter and ion pump
                      for keeping the vacuum, a wobble stick, which is needed for
                      in-situ sample transfer and also serves as sample holder for
                      samples of up to 1 cm2 and a valve for sample exchange by
                      mounting the chamber on the MBE system. The pressure in the
                      transfer chamber is kept in the 10−10 mbar range during
                      transport and PNR measurement.We present the first polarized
                      neutron reflectivity measurements on a 2 nm Co thin film
                      which was grown in our MBE setup and measured afterwards at
                      MARIA at room temperature in a magnetic field of 300 mT in
                      the Q-range up to 0.2 Å-1. The data evaluation clearly
                      shows no oxidation of the Co film. So, samples which are
                      delicate to handle in ambient conditions can be successfully
                      measured using our handy UHV chamber.Booking of the access
                      to the MBE system as well as the transport chamber for
                      measuring is possible via the MLZ user office system and the
                      nanoscience foundry and fine analysis project (NFFA,
                      www.nffa.eu) in combination with an application for a beam
                      time at the neutron instrument MARIA.This project is part
                      has received funding from the EU’s H2020 research and
                      innovation programme under grant agreement n. 654360.[1] S.
                      Mattauch, A. Koutsioubas, and S. Pütter, Journal of
                      large-scale research facilities 1, A8 (2015),
                      (www.mlz-garching.de).},
      month         = {Jul},
      date          = {2016-07-04},
      organization  = {11. International Conference on
                       Polarised Neutrons for Condensed Matter
                       Investigations, Freising (Germany), 4
                       Jul 2016 - 7 Jul 2016},
      subtyp        = {After Call},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {524 - Controlling Collective States (POF3-524) / 6212 -
                      Quantum Condensed Matter: Magnetism, Superconductivity
                      (POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich
                      Centre for Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-524 / G:(DE-HGF)POF3-6212 /
                      G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)MARIA-20140101 / EXP:(DE-MLZ)MBE-MLZ-20151210},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/811992},
}