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@INPROCEEDINGS{Eich:906823,
      author       = {Eich, Andreas and Friese, Karen and Meven, Martin and
                      Hölzle, Micha and Su, Yixi and Müller, Thomas and Hutanu,
                      Vladimir and Poli, Muni K. B. and Georgii, Robert and
                      Beddrich, Lukas and Grzechnik, Andrzej},
      title        = {{D}evelopments in {H}igh {P}ressure {C}lamp {C}ells for
                      {N}eutron {S}cattering at the {MLZ}},
      reportid     = {FZJ-2022-01717},
      year         = {2022},
      abstract     = {The availability of pressure devices adapted tothe
                      experimental demands (intended pressure,probing method,
                      instrumental environment, etc.)is the fundamental
                      requirement for the study ofhigh-pressure effects on any
                      material property.Our work presents the development of
                      highpressure cells for neutron scattering onpolycrystalline
                      and single-crystalline samples atlow temperatures and with
                      applied magneticfields.In the most common type of device
                      used for high-pressure neutron experiments, the clamp
                      cell[1], the pressure is applied ex situ, allowing its
                      independent and versatile use in various setups.Our clamp
                      cell design has been specifically developed for neutron
                      scattering experiments at lowtemperatures in the
                      closed-cycle cryostats on the instruments DNS (diffuse
                      scattering neutronspectrometer), MIRA (cold three axes
                      spectrometer), and POLI (polarized hot
                      neutrondiffractometer) at the Heinz Maier-Leibnitz Zentrum
                      (MLZ) in Garching, Germany [2]. Thecompact monobloc cell is
                      available in two variants, a CuBe alloy and a NiCrAl
                      “Russian Alloy”one, working up to about 1.1 GPa and 1.5
                      GPa, respectively. Measurements aimed to elucidatemagnetic
                      properties are possible due to the low paramagnetic moment
                      of both alloys.Tests with neutron radiation were performed
                      to calibrate the load/pressure curve of the CuBecell, to
                      estimate its neutron absorption and background, and to
                      measure magnetic reflections. Inaddition, the thermal
                      response of the cells in the instrument cryostat was
                      measured and theexperimental findings were complemented by
                      simulations.A second, modified version of the cell with the
                      same mechanical properties (Fig. 1) wasdeveloped with an
                      optical access path to the inner part of the cell, which
                      additionally enables theuse of ruby luminescence to
                      determine the pressure independent from neutrons. The
                      respectiveload/pressure calibration curves were measured for
                      both cell variants.Ultimately, these cells are intended as
                      standard cells for high pressure measurements ondifferent
                      instruments at MLZ suitable for all available magnets and
                      cryostats down to 1.5 K.},
      month         = {Mar},
      date          = {2022-03-14},
      organization  = {30th annual meeting of the German
                       Crystallographic Society (DGK), Ludwig
                       Maximilians Universität München +
                       online (Germany + online), 14 Mar 2022
                       - 17 Mar 2022},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-FRM-II},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)JCNS-FRM-II-20110218},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      experiment   = {EXP:(DE-MLZ)DNS-20140101 / EXP:(DE-MLZ)POLI-HEIDI-20140101
                      / EXP:(DE-MLZ)MIRA-20140101},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/906823},
}