TY  - JOUR
A1  - Pietsch, Ullrich
A1  - Panzner, Tobias
A1  - Leitenberger, Wolfram
A1  - Vartanyants, Ivan A.
T1  - Coherence experiments at the EDR-beamline of BESSY II
Y1  - 2005
ER  - 
TY  - JOUR
A1  - Leiterer, York
A1  - Leitenberger, Wolfram
A1  - Emmerling, Franziska
A1  - Thünemann, Andreas F.
A1  - Panne, Ulrich
T1  - The use of an acoustic levitator to follow crystallization in small droplets by energydispersive X-ray diffraction
Y1  - 2006
UR  - http://journals.iucr.org/j/issues/2006/05/00/wf5016/wf5016.pdf
U6  - https://doi.org/10.1107/S0021889806024915
SN  - 0021-8898
ER  - 
TY  - JOUR
A1  - Leitenberger, Wolfram
A1  - Pietsch, Ullrich
T1  - A monolithic Fresnel bimirror for hard X-rays and its application for coherence measurements
N2  - Experiments using a simple X-ray interferometer to measure the degree of spatial coherence of hard X-rays are reported. A monolithic Fresnel bimirror is used at small incidence angles to investigate synchrotron radiation in the energy interval 5-50 keV with monochromatic and white beam. The experimental setup was equivalent to a Young's double-slit experiment for hard X-rays with slit dimensions in the micrometre range. From the high-contrast interference pattern the degree of coherence was determined.
Y1  - 2007
UR  - http://journals.iucr.org/s/issues/2007/02/00/wl5137/wl5137.pdf
U6  - https://doi.org/10.1107/S0909049507003846
SN  - 0909-0495
ER  - 
TY  - JOUR
A1  - Reddy, Raghavendra V.
A1  - Puranik, Shikha
A1  - Gupta, Ajay
A1  - Leitenberger, Wolfram
T1  - Study of FePt films prepared by reactive sputtering
Y1  - 2007
UR  - http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TW4-4N49VG1-1- 9&_cdi=5552&_user=1584062&_orig=search&_coverDate=05%2F25%2F2007&_sk=999189990&view=c&wchp=dGLbVtb- zSkzS&md5=d04c9f9f7492f4ef5fb605bfbaf
ER  - 
TY  - JOUR
A1  - Kowarik, Stefan
A1  - Gerlach, Andreas
A1  - Leitenberger, Wolfram
A1  - Hu J, Witte
A1  - Wöll, Christoph
A1  - Schreiber, Frank
T1  - Energy-dispersive X-ray reflectivity and GID for real-time growth studies of pentacene thin films
N2  - We use energy-dispersive X-ray reflectivity and grazing incidence diffraction (GID) to follow the growth of the crystalline organic semiconductor pentacene on silicon oxide in-situ and in real-time. The technique allows for monitoring Bragg reflections and measuring X-ray growth oscillations with a time resolution of 1 min in a wide q-range in reciprocal space extending over 0.25-0.80 angstrom(-1), i.e. sampling a large number of Fourier components simultaneously. A quantitative analysis of growth oscillations at several q-points yields the evolution of the surface roughness, showing a marked transition from layer-by-layer growth to strong roughening after four monolayers of pentacene have been deposited. (c) 2006 Elsevier B.V. All rights reserved.
Y1  - 2007
UR  - http://www.sciencedirect.com/science/journal/00406090
U6  - https://doi.org/10.1016/j.tsf.2006.12.020
SN  - 0040-6090
ER  - 
TY  - GEN
A1  - von Reppert, Alexander
A1  - Puddell, J.
A1  - Koc, A.
A1  - Reinhardt, M.
A1  - Leitenberger, Wolfram
A1  - Dumesnil, K.
A1  - Zamponi, Flavio
A1  - Bargheer, Matias
T1  - Persistent nonequilibrium dynamics of the thermal energies in the spin and phonon systems of an antiferromagnet
N2  - We present a temperature and fluence dependent Ultrafast X-Ray Diffraction study of a laser-heated antiferromagnetic dysprosium thin film. The loss of antiferromagnetic order is evidenced by a pronounced lattice contraction. We devise a method to determine the energy flow between the phonon and spin system from calibrated Bragg peak positions in thermal equilibrium. Reestablishing the magnetic order is much slower than the cooling of the lattice, especially around the Néel temperature. Despite the pronounced magnetostriction, the transfer of energy from the spin system to the phonons in Dy is slow after the spin-order is lost.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 272 
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-98710
ER  - 
TY  - JOUR
A1  - von Reppert, Alexander
A1  - Puddell, J.
A1  - Koc, A.
A1  - Reinhardt, M.
A1  - Leitenberger, Wolfram
A1  - Dumesnil, K.
A1  - Zamponi, Flavio
A1  - Bargheer, Matias
T1  - Persistent nonequilibrium dynamics of the thermal energies in the spin and phonon systems of an antiferromagnet
JF  - Structural dynamics
N2  - We present a temperature and fluence dependent Ultrafast X-Ray Diffraction study of a laser-heated antiferromagnetic dysprosium thin film. The loss of antiferromagnetic order is evidenced by a pronounced lattice contraction. We devise a method to determine the energy flow between the phonon and spin system from calibrated Bragg peak positions in thermal equilibrium. Reestablishing the magnetic order is much slower than the cooling of the lattice, especially around the Néel temperature. Despite the pronounced magnetostriction, the transfer of energy from the spin system to the phonons in Dy is slow after the spin-order is lost.
Y1  - 2016
U6  - https://doi.org/10.1063/1.4961253
SN  - 2329-7778
VL  - 3
PB  - AIP Publishing LLC
CY  - Melville, NY
ER  -