TY  - CONF
AU  - Pütter, Sabine
AU  - Syed Mohd, Amir
AU  - Mattauch, Stefan
AU  - Koutsioumpas, Alexandros
AU  - Schneider, Harald
AU  - Brückel, Thomas
TI  - How to accomplish (quasi) in-situ neutron reflectivity measurements on ultrathin magnetic films 
M1  - FZJ-2016-04282
PY  - 2016
AB  - The  investigation of ultrathin films which are sensitive to ambient air at large scale instruments is a challenge as the capabilities for on-site growth UHV chambers to measure in-situ are often limited, mostly due to lacking space. A common solution is the use of protecting cap layers on top of the films. However they  might change the physical properties of the sample.Our solution is a handy mini UHV-chamber which is used for sample transfer and quasi in-situ measurements at the neutron reflectivity instrument MARIA of the Jülich Centre for Neutron Science at MLZ in Garching. The samples are prepared in the  adjacent thin film laboratory by molecular beam epitaxy and moved into the compact  chamber for transfer. It  is equipped with sapphire windows, an SAES getter pump and a wobble stick, which serves also as a sample holder for samples of up to 1.4~cm$^2$. The pressure in the transfer chamber is kept below $10^{-9}$ mbar. Neutron reflectivity measurements can be performed at room temperature in magnetic fields of up to 600~mT. We present first polarized neutron reflectivity measurements on Co thin films at room temperature in a magnetic field of 300 mT in the Q-range up to 0.2 \AA$^{-1}$.
T2  - Frühjahrstagung der Deutschen Physikalischen Gesellschaft
CY  - 6 Mar 2016 - 11 Mar 2016, Regensburg (Germany)
Y2  - 6 Mar 2016 - 11 Mar 2016
M2  - Regensburg, Germany
LB  - PUB:(DE-HGF)24
UR  - https://juser.fz-juelich.de/record/811981
ER  -