Zobrazeno 1 - 10
of 45
pro vyhledávání: '"R F Pettifer"'
Publikováno v:
Journal of Synchrotron Radiation. 14:169-172
Differential EXAFS (DiffEXAFS) is a novel technique for measuring atomic perturbations on a local scale. Here a complementary technique for such studies is presented: differential X-ray diffraction (DiffXRD), which may be used to independently verify
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b008028626ad9792d45fef3fdb2cf9ec
https://doi.org/10.1107/s0909049506049971
https://doi.org/10.1107/s0909049506049971
Publikováno v:
Journal of Magnetism and Magnetic Materials. 237:175-180
A thin film of FexCo(1−x) has been produced with a linear compositional gradient ranging from x=0.67 to x=0.40 via an RF sputtering technique. The film was deposited onto a glass slide from a target consisting of two semi-circles of pure Fe and Co.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e801154b9c16a136774b142edc6d7348
https://doi.org/10.1016/s0304-8853(01)00510-8
https://doi.org/10.1016/s0304-8853(01)00510-8
Autor:
Tessa Brennan, George A. Saunders, Gavin Mountjoy, Daniel T. Bowron, R. F. Pettifer, Jacqueline M. Cole, Robert J. Newport
Publikováno v:
Journal of Physics: Condensed Matter. 13:6659-6674
A rare-earth K-edge extended X-ray absorption fine structure (EXAFS) study of rare-earth phosphate glasses, (R2O3)(x)(P2O5)(1-x), x = 0.187-0.239, R = La, Nd, Sm, Eu, Gd, Dy, Er, is presented. The structures of these materials were investigated as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73189489691793769760df72d47047ce
https://doi.org/10.1088/0953-8984/13/31/307
https://doi.org/10.1088/0953-8984/13/31/307
Autor:
Gwyndaf Evans, R. F. Pettifer
Publikováno v:
Journal of Applied Crystallography. 34:82-86
A Fortran programCHOOCH, which derives experimental values of the anomalous-scattering factorsf′′ andf′ from X-ray fluorescence spectra, is described. The program assumes knowledge of theoretical values for the imaginary term,f′′, of the an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbee1885df8867206b27bc061c78bdaf
https://doi.org/10.1107/s0021889800014655
https://doi.org/10.1107/s0021889800014655
Publikováno v:
Physical Review B. 54:14877-14880
The lifetime broadening of some rare-earth ${L}_{\mathrm{III}}$-edge x-ray absorption spectra (XAS) is partially removed by deconvolving high quality data. The ligand field splitting of dipolar resonances is clearly resolved. Exposed pre-edge structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a69450405ae07bc114120cc9b4c4d243
https://doi.org/10.1103/physrevb.54.14877
https://doi.org/10.1103/physrevb.54.14877
Autor:
R. F. Pettifer, Gwyndaf Evans
Publikováno v:
Review of Scientific Instruments. 67:3428-3433
An apparatus and technique are described for the characterization and energy stabilization of a monochromatic x‐ray beam from a synchrotron radiation source that is used for diffraction experiments. The energy of the beam between 6–30 keV can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2710b67b4d0f441ca9ecb0797626ae04
https://doi.org/10.1063/1.1147155
https://doi.org/10.1063/1.1147155
Publikováno v:
The Journal of Chemical Physics. 103:8444-8455
Inelastic neutron scattering (INS) measurements are presented for solid imidazole at 20 K. Both powder and oriented platelets have been measured. Assignments of bands are consistent with earlier infrared and Raman studies except for a band at 961 cm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bd941c7d603d920c34852d12ddac350
https://doi.org/10.1063/1.470155
https://doi.org/10.1063/1.470155
Publikováno v:
Europhysics Letters (EPL). 29:647-652
Scattered-wave calculations of X-ray absorption near-edge structure are presented for the K-edge of molecular chlorine. The calculations are based on different choices of one-electron potential: using either overlapped-free-atom or self-consistent-fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::914c1654d180916721bbf32c6771cd65
https://doi.org/10.1209/0295-5075/29/8/010
https://doi.org/10.1209/0295-5075/29/8/010
Publikováno v:
Journal of Synchrotron Radiation. 6:217-219
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c02c6054453c2b11e331f772b3eb0c4
https://doi.org/10.1107/s090904959900062x
https://doi.org/10.1107/s090904959900062x
Autor:
R. F. Pettifer, R. Grössinger, M. P. Ruffoni, Sakura Pascarelli, R. Sato Turtelli, Cristina Bormio-Nunes
Publikováno v:
Physical Review Letters. 101
Using differential x-ray absorption spectroscopy (DiffXAS) we have measured and quantified the intrinsic, atomic-scale magnetostriction of Fe81Ga19. By exploiting the chemical selectivity of DiffXAS, the Fe and Ga local environments have been assesse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f990d509557720ce8689cd7ca6f941a
https://doi.org/10.1103/physrevlett.101.147202
https://doi.org/10.1103/physrevlett.101.147202