Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Frank Döbrich"'
Autor:
Dirk Honecker, Charles Dewhurst, Kiyonori Suzuki, Frank Döbrich, C. Gómez-Polo, A. Wiedenmann, Andreas Michels
Publikováno v:
Neutron News. 22:15-19
Magnetic small-angle neutron scattering (SANS) is a widely used technique for the investigation of nanoscale inhomogeneities in the magnetic microstructure of bulk materials [1,2]. However, up to now, magnetic SANS was almost exclusively utilized wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26e644b59461d218495e74b633eb8cd3
https://doi.org/10.1080/10448632.2011.598801
https://doi.org/10.1080/10448632.2011.598801
Publikováno v:
Journal of Magnetism and Magnetic Materials. 316:e779-e782
Compared to conventional ferrofluids, which contain mostly spherical particles, a dispersion of highly anisometric particles such as rods or chains is expected to give rise to an enhancement or modification of well-known ferrofluid properties. This c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0299d8c5ac8e7f0b6c3560eb755e9a9
https://doi.org/10.1016/j.jmmm.2007.03.098
https://doi.org/10.1016/j.jmmm.2007.03.098
Autor:
Joachim Kohlbrecher, Frank Döbrich, Jens-Peter Bick, R. Birringer, Andreas Michels, Matthias Wolff
Publikováno v:
Journal of Physics: Condensed Matter, 27 (4)
Journal of Physics : Condensed Matter, 27, 046001. Bristol, United Kingdom: Institute of Physics (2015).
Journal of Physics : Condensed Matter, 27, 046001. Bristol, United Kingdom: Institute of Physics (2015).
A neutron study of nanocrystalline terbium (Balaji G et al 2008 Phys. Rev. Lett. 100 227202) has shown that the randomly oriented anisotropy of the paramagnetic susceptibility tensor may lead to strongly correlated nanoscale spin disorder in the para
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff365cd16db4c0c589ebead44ecf7a63
Publikováno v:
Physical Review B. 87
The magnetic ordering of nanocrystalline gadolinium (crystallite sizes of 21 nm and 38 nm) has been studied using neutron diffraction and compared with that of a reference ($\ensuremath{\sim}1\phantom{\rule{4pt}{0ex}}\ensuremath{\mu}\mathrm{m}$) samp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb011cd62728a88795e46149bca4c3be
https://doi.org/10.1103/physrevb.87.064408
https://doi.org/10.1103/physrevb.87.064408
Autor:
Andreas Michels, Rainer Birringer, Jens-Peter Bick, Ralf Schweins, Joachim Kohlbrecher, E. M. Forgan, Jorge L. Gavilano, Frank Döbrich, Kiyonori Suzuki, Henrich Frielinghaus, Peter Lindner, Dirk Honecker, Elliot P. Gilbert
Publikováno v:
Applied physics letters 102(2), 022415-(2013). doi:10.1063/1.4776708
We have studied the magnetization-reversal process of a Nd2Fe14B/Fe3B nanocomposite using small-angle neutron scattering. Based on the computation of the autocorrelation function of the spin misalignment, we have estimated the characteristic size lC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d7a86cd5439819a493dda56c9ebdfca
https://juser.fz-juelich.de/record/128632
https://juser.fz-juelich.de/record/128632
Autor:
Joachim Kohlbrecher, Rainer Birringer, M. Sharp, Helmut Eckerlebe, Andreas Michels, Frank Döbrich
Publikováno v:
Physical Review B. 85
We report grain-size-dependent results on nanocrystalline bulk Gd obtained by magnetic small-angle neutron scattering (SANS) and magnetometry. This approach allows one to study systematically how the magnetic microstructure of this rare-earth metal i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c66322786f34927ada6c19eb4da92593
https://doi.org/10.1103/physrevb.85.094411
https://doi.org/10.1103/physrevb.85.094411
Autor:
Andreas Michels, Charles Dewhurst, A. Heinemann, Dirk Honecker, Kiyonori Suzuki, Frank Döbrich
We report the results of spin-resolved small-angle neutron scattering (SANS) experiments on the two-phase nanocrystalline alloy NANOPERM. At a saturating applied magnetic field of $1.27\phantom{\rule{0.28em}{0ex}}\mathrm{T}$ we observe a cross-shaped
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::929590dcb3e3859c15ed92cef179ce42
http://orbilu.uni.lu/handle/10993/524
http://orbilu.uni.lu/handle/10993/524
Publikováno v:
Journal of Physics: Condensed Matter, 23(1), 016003. IOP Publishing (2010).
We report results of longitudinal (one-dimensional) neutron polarization analysis on polycrystalline bulk Co with an average crystallite size of D = 10 nm. The spin-flip small-angle neutron scattering (SANS) data are analyzed in the approach-to-satur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b7dc542bbbf427a8afc641738524f5b
http://orbilu.uni.lu/handle/10993/525
http://orbilu.uni.lu/handle/10993/525
Autor:
Charles Dewhurst, Frank Döbrich, Christina Gomez-Polo, Kiyonori Suzuki, A. Wiedenmann, Andreas Michels, Dirk Honecker, A. Ferdinand
Due to recent progress in the development of 3He spin filters, it has only now become possible to perform routinely longitudinal (one-dimensional) neutron-spin analysis (POLARIS) in small-angle neutron scattering (SANS) experiments. It is the purpose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7df5534dbbce729682380e8e0a82d7e
http://orbilu.uni.lu/handle/10993/528
http://orbilu.uni.lu/handle/10993/528
Autor:
Markus Ames, Jürgen Markmann, Andreas Michels, R. Birringer, M. Elmas, Frank Döbrich, Joachim Kohlbrecher, M. Sharp, Helmut Eckerlebe
Publikováno v:
EPL (Europhysics Letters). 85:47003
We report magnetization and magnetic neutron scattering measurements on nanocrystalline Fe which was prepared by means of the inert-gas condensation technique. Depending on the compaction pressure applied during the synthesis procedure (0.5–1.8 GPa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02a63cbb408d8e705e87c9670c4588c4
https://doi.org/10.1209/0295-5075/85/47003
https://doi.org/10.1209/0295-5075/85/47003