Zobrazeno 1 - 10
of 210
pro vyhledávání: '"G. Coddens"'
Publikováno v:
Materials Science and Engineering: A. :662-665
We study the vibrational density of states (VDOS) in the i-AlCuFe quasicrystal measured by different methods: (i) 57 Fe inelastic nuclear-resonant absorption (INA) of X-rays (ii) and time-of-flight inelastic neutron scattering (INS). The samples stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e8ed4a675b1c85c588845e757ac9c39
https://doi.org/10.1016/s0921-5093(00)01138-2
https://doi.org/10.1016/s0921-5093(00)01138-2
Publikováno v:
Physical Review B. 62:6268-6295
We present an extensive triple-axis neutron-scattering study of phason hopping in a single-domain sample of a perfect icosahedral ${\mathrm{Al}}_{70.4}{\mathrm{Mn}}_{8.6}{\mathrm{Pd}}_{21.0}$ quasicrystal. The quasielastic intensities exhibit importa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3150cf3a9495ec927ff1b505cb16822f
https://doi.org/10.1103/physrevb.62.6268
https://doi.org/10.1103/physrevb.62.6268
Publikováno v:
Le Journal de Physique IV. 10:Pr7-137
The rotational spectra of CH 4 at low temperatures have been used to investigate the disordering influence of a restricted geometry on the orientational structure of methane condensates in silicagels and Controlled Pore Glasses. A cross-over from com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::189783ec624768244a071511f10f9d76
https://doi.org/10.1051/jp4:2000727
https://doi.org/10.1051/jp4:2000727
Autor:
G. Coddens
Publikováno v:
Le Journal de Physique IV. 10:Pr1-151
Nous expliquons la difference entre la diffusion coherente et la diffusion incoherente des neutrons par une analogie avec l'experience de diffraction par une double fente de Young. Nous montrons que le langage adequat pour calculer les signaux cohere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::892a7cacac121d78dec2cbe56c502195
https://doi.org/10.1051/jp4:2000109
https://doi.org/10.1051/jp4:2000109
Publikováno v:
Applied Physics A: Materials Science & Processing. 69:591-596
Elastic and inelastic neutron scattering are used to study the structure and dynamics of single-wall carbon nanotubes (SWNT) self-assembled into nanobundles (NBSWNT). Suspensions of NBSWNT are characterized by small-angle neutron scattering. Neutron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c220acaf03db2a82a603821cbecbc5fd
https://doi.org/10.1007/s003390051037
https://doi.org/10.1007/s003390051037
Publikováno v:
Physical Review Letters. 83:3226-3229
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c299885e2d94f522228e391253cd3cb8
https://doi.org/10.1103/physrevlett.83.3226
https://doi.org/10.1103/physrevlett.83.3226
Publikováno v:
Physical Review B. 60:11773-11782
Quantum ordering, mixing, and mobility of isotopic hydrogen mixtures adsorbed on graphite (0001) is studied in the monolayer range by diffraction, small angle (SANS), and quasielastic neutron scattering (QENS). Solid mixtures of ${\mathrm{H}}_{2}\ens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b782329efda12adb23f71d589e249718
https://doi.org/10.1103/physrevb.60.11773
https://doi.org/10.1103/physrevb.60.11773
Autor:
G. Coddens, J. Fitter, Bernd Büchner, S. Longeville, R. E. Lechner, M. Ferrand, E. Holland-Moritz, M. Roepke, H. Berg, R. Kahn
Publikováno v:
Physical Review B. 60:9793-9800
We have performed inelastic magnetic neutron scattering experiments on ${\mathrm{La}}_{2\ensuremath{-}x\ensuremath{-}y}{\mathrm{Sr}}_{x}{\mathrm{Nd}}_{y}{\mathrm{CuO}}_{4} (0l~xl~0.2$ and $0.1l~yl~0.6)$ in order to study the Nd $4f$-spin dynamics at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79cc77c1dff20e1b5f66908e104dfd59
https://doi.org/10.1103/physrevb.60.9793
https://doi.org/10.1103/physrevb.60.9793
Autor:
Walter Steurer, G. Coddens
Publikováno v:
Physical Review B. 60:270-276
We have measured phason hopping in isotopic powder samples of decagonal Al-Co-Ni quasicrystals, by time-of-flight quasielastic neutron scattering. The three isotopic samples were based on ${}^{\mathrm{nat}}\mathrm{Ni},$ and 99.5% enriched ${}^{58}\ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0319d5b9ad64d3eff118079fd6fd598
https://doi.org/10.1103/physrevb.60.270
https://doi.org/10.1103/physrevb.60.270
Publikováno v:
Physical Review B. 59:R14145-R14148
We use a recently developed method based on inelastic nuclear-resonant absorption of x rays to measure the iron-partial vibrational density of states (VDOS) in a quasicrystal. The results differ from those obtained by inelastic neutron scattering in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b0a66514a3dbdde7cec5e5da8e16f0e
https://doi.org/10.1103/physrevb.59.r14145
https://doi.org/10.1103/physrevb.59.r14145