P. Emma, First lasing and operation of an ??ngstrom-wavelength free-electron laser, Nature Photonics, vol.102, issue.9, pp.641-647, 2010.
DOI : 10.1038/nphoton.2010.176

W. Helml, Measuring the temporal structure of few-femtosecond free-electron laser X-ray pulses directly in the time domain, Nature Photonics, vol.8, issue.12, pp.950-957, 2014.
DOI : 10.1103/PhysRevLett.92.074801

S. Mathias, Probing the timescale of the exchange interaction in a ferromagnetic alloy, Proc. Natl. Acad. Sci, pp.4792-4797, 2012.
DOI : 10.1103/PhysRevB.58.R5920

D. Rudolf, Ultrafast magnetization enhancement in metallic multilayers driven by superdiffusive spin current, Nature Communications, vol.16, issue.147, p.1037, 2012.
DOI : 10.1088/0953-8984/16/30/013

URL : http://www.nature.com/articles/ncomms2029.pdf

T. Fan, Bright circularly polarized soft X-ray high harmonics for X-ray magnetic circular dichroism, Proc. Natl. Acad. Sci, pp.14206-14211, 2015.
DOI : 10.1073/pnas.1519666112

URL : http://www.pnas.org/content/112/46/14206.full.pdf

I. Radu, Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins, Nature, vol.39, issue.7342, pp.5-9, 2011.
DOI : 10.1209/0295-5075/81/27004

J. T. Fourkas, L. Dhar, K. A. Nelson, and R. Trebino, Spatially encoded, single-shot ultrafast spectroscopies, Journal of the Optical Society of America B, vol.12, issue.1, p.155, 1995.
DOI : 10.1364/JOSAB.12.000155

K. Nakagawa, Sequentially timed all-optical mapping photography (STAMP), Nature Photonics, vol.37, issue.9, pp.695-700, 2014.
DOI : 10.1146/annurev.matsci.37.052506.084327

URL : http://repository.dl.itc.u-tokyo.ac.jp/dspace/bitstream/2261/56498/1/nphoton.2014.163_author_version.pdf

P. R. Poulin and K. A. Nelson, Irreversible Organic Crystalline Chemistry Monitored in Real Time, Science, vol.313, issue.5794, pp.1756-60, 2006.
DOI : 10.1126/science.1127826

T. Wang, Multilayers Using Resonant X-Ray Holography, Physical Review Letters, vol.259, issue.26, p.267403, 2012.
DOI : 10.1103/PhysRevB.76.214410

URL : https://hal.archives-ouvertes.fr/in2p3-00724499

J. J. Van-thor and A. Madsen, A split-beam probe-pump-probe scheme for femtosecond time resolved protein X-ray crystallography, Structural Dynamics, vol.46, issue.5, p.14102, 2015.
DOI : 10.1039/c003406a

C. David, Following the dynamics of matter with femtosecond precision using the X-ray streaking method, Scientific Reports, vol.79, issue.1, p.7644, 2015.
DOI : 10.1063/1.1379364

P. Karvinen, Single-shot analysis of hard x-ray laser radiation using a noninvasive grating spectrometer, Optics Letters, vol.37, issue.24, p.5073, 2012.
DOI : 10.1364/OL.37.005073

C. Pellegrini, A. Marinelli, and S. Reiche, The physics of x-ray free-electron lasers, Reviews of Modern Physics, vol.7, issue.1, p.15006, 2016.
DOI : 10.1140/epjh/e2011-20016-0

E. Beaurepaire, J. Merle, A. Daunois, and J. Bigot, Ultrafast Spin Dynamics in Ferromagnetic Nickel, Physical Review Letters, vol.185, issue.22, pp.4250-4253, 1996.
DOI : 10.1002/pssb.2221850219

A. Kirilyuk, A. V. Kimel, and T. Rasing, Ultrafast optical manipulation of magnetic order, Reviews of Modern Physics, vol.25, issue.3, pp.2731-2784, 2010.
DOI : 10.1103/RevModPhys.76.323

L. Guyader and L. , Nanoscale sub-100 picosecond all-optical magnetization switching in GdFeCo microstructures, Nature Communications, vol.185, p.5839, 2015.
DOI : 10.1016/j.elspec.2012.03.001

B. Pfau, Ultrafast optical demagnetization manipulates nanoscale spin structure in domain walls, Nature Communications, vol.319, p.1100, 2012.
DOI : 10.1016/j.jmmm.2007.04.035

URL : https://hal.archives-ouvertes.fr/hal-01405526

B. Vodungbo, Laser-induced ultrafast demagnetization in the presence of a nanoscale magnetic domain network, Nature Communications, vol.62, p.999, 2012.
DOI : 10.1103/PhysRevB.62.12216

URL : https://hal.archives-ouvertes.fr/hal-00743509

S. Mangin, Engineered materials for all-optical helicity-dependent magnetic switching, Nature Materials, vol.88, issue.3, pp.286-292, 2014.
DOI : 10.1103/PhysRevB.88.020406

URL : https://hal.archives-ouvertes.fr/hal-01282629

M. Hecker, P. M. Oppeneer, S. Valencia, H. C. Mertins, and C. M. Schneider, Soft X-ray magnetic reflection spectroscopy at the 3p absorption edges of thin Fe films, Journal of Electron Spectroscopy and Related Phenomena, vol.144, issue.147, pp.144-147, 2005.
DOI : 10.1016/j.elspec.2005.01.151

C. La-o-vorakiat, Edges of Magnetic Elements Observed Using a Tabletop High-Harmonic Soft X-Ray Source, Physical Review Letters, vol.103, issue.25, p.257402, 2009.
DOI : 10.1103/PhysRevLett.102.073902

M. Makita, Fabrication of diamond diffraction gratings for experiments with intense hard x-rays, Microelectronic Engineering, vol.176, pp.75-78, 2017.
DOI : 10.1016/j.mee.2017.02.002

C. Braig, Reflection zone plate concept for resonant inelastic x-ray scattering spectrometry, Applied Optics, vol.56, issue.3, p.515, 2017.
DOI : 10.1364/AO.56.000515

L. Stojchevska, Ultrafast Switching to a Stable Hidden Quantum State in an Electronic Crystal, Science, vol.66, issue.15, pp.177-180, 2014.
DOI : 10.1103/PhysRevB.66.094301

URL : https://hal.archives-ouvertes.fr/hal-00997223

K. Tiedtke, The soft x-ray free-electron laser FLASH at DESY: beamlines, diagnostics and end-stations, New Journal of Physics, vol.11, issue.2, p.23029, 2009.
DOI : 10.1088/1367-2630/11/2/023029

URL : http://doi.org/10.1088/1367-2630/11/2/023029

B. L. Henke, E. M. Gullikson, and J. C. Davis, X-Ray Interactions -Photoabsorption, Scattering, Transmission And Reflection AT E = 50?30, Atom. Data Nucl. Data Tables, vol.54, issue.55, pp.0-1, 1993.
DOI : 10.1006/adnd.1993.1013

M. Battiato, K. Carva, and P. M. Oppeneer, Superdiffusive Spin Transport as a Mechanism of Ultrafast Demagnetization, Physical Review Letters, vol.105, issue.2, p.27203, 2010.
DOI : 10.1103/PhysRevB.77.184428

R. Scientific, V. P. Zhukov, E. V. Chulkov, and P. M. Echenique, 7253 | DOI:10.1038/s41598-017-07069-z 29 GW+T theory of excited electron lifetimes in metals, Phys. Rev. B, vol.7, issue.72, p.155109, 2005.

I. A. Nechaev and E. Chulkov, Quasiparticle dynamics in ferromagnetic compounds of the Co???Fe and Ni???Fe systems, The European Physical Journal B, vol.72, issue.1, pp.31-40, 2010.
DOI : 10.1140/epjb/e2010-00236-9

J. Zak, E. R. Moog, C. Liu, and S. D. Bader, Magneto-optics of multilayers with arbitrary magnetization directions, Physical Review B, vol.10, issue.8, pp.6423-6429, 1991.
DOI : 10.1063/1.345121