Journal Article

FZJ-2017-00051

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A versatile UHV transport and measurement chamber for neutron reflectometry under UHV conditions

Syed Mohd, A. (Corresponding author)FZJ* ; Pütter, S. (Corresponding author)FZJ* ; Mattauch, S.FZJ* ; Koutsioumpas, A.FZJ* ; Schneider, H. ; Weber, A.FZJ* ; Brückel, T.FZJ*

2016
American Institute of Physics [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/13410  doi:10.1063/1.4972993

Abstract: We report on a versatile mini ultra-high vacuum (UHV) chamber which is designed to be used on the MAgnetic Reflectometer with high Incident Angle of the Jülich Centre for Neutron Science at Heinz Maier-Leibnitz Zentrum in Garching, Germany. Samples are prepared in the adjacent thin film laboratory by molecular beam epitaxy and moved into the compact chamber for transfer without exposure to ambient air. The chamber is based on DN 40 CF flanges and equipped with sapphire view ports, a small getter pump, and a wobble stick, which serves also as sample holder. Here, we present polarized neutron reflectivity measurements which have been performed on Co thin films at room temperature in UHV and in ambient air in a magnetic field of 200 mT and in the Q-range of 0.18 Å−1. The results confirm that the Co film is not contaminated during the polarized neutron reflectivity measurement. Herewith it is demonstrated that the mini UHV transport chamber also works as a measurement chamber which opens new possibilities for polarized neutron measurements under UHV conditions.

Keyword(s): Instrument and Method Development (1st) ; Magnetism (2nd) ; Instrument and Method Development (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Streumethoden (JCNS-2)
3. Streumethoden (PGI-4)
4. JARA-FIT (JARA-FIT)

Research Program(s):

1. 524 - Controlling Collective States (POF3-524) (POF3-524)
2. 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621) (POF3-621)
3. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
4. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)
5. NFFA-Europe - NANOSCIENCE FOUNDRIES AND FINE ANALYSIS - EUROPE (654360) (654360)

Experiment(s):

1. MARIA: Magnetic reflectometer with high incident angle (NL5N)
2. MBE-MLZ: Molecular Beam Epitaxy at MLZ

Appears in the scientific report 2016

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Database coverage:
; ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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