Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Douglas M. Pease"'
Autor:
T. Huang, R. L. Miller, David M. Perry, J. I. Budnick, Douglas M. Pease, William A. Hines, P. Shanthakumar
Publikováno v:
physica status solidi (b). 246:2154-2158
Magnetization, X-ray absorption fine structure, and resistivity measurements on two samples of Cu + 2.0 at% Fe are reported here. The first sample, prepared by annealing at 950 °C for 2 days followed by rapid quenching, consists of a random solid so
Autor:
Anatoly I. Frenkel, J. I. Budnick, T. Huang, S. P. Alpay, D. Goberman, Douglas M. Pease, B.S. Allimi
Publikováno v:
Journal of Materials Research. 22:2825-2831
We report the direct deposition of epitaxial 215-nm-thick vanadium sesquioxide (V2O3) films on a- and c-plane sapphire substrates from powder-pressed V2O3 targets via pulsed-laser deposition (PLD) in an evacuated deposition chamber devoid of O2. The
Publikováno v:
Ultramicroscopy. 88:1-16
We have developed a parameterization method which linearizes the relationship between local magnetic moment and the 3d L3/L2 “white line” ratio as observed in electron energy loss spectroscopy or X-ray near edge absorption spectroscopy. We first
Autor:
J. I. Budnick, D. M. Potrepka, A. A. Antonov, Anatoly I. Frenkel, Steve M. Heald, Ken Sills, D. I. Brewe, M. Daniel, I. K. Grigorieva, Douglas M. Pease, C. Nelson, M. Hammes, T. Rhodes
Publikováno v:
Review of Scientific Instruments. 71:3267-3273
We have constructed an x-ray monochromator based on a log spiral of revolution covered with highly oriented pyrolytic graphite. Such a monochromator is used for obtaining x-ray absorption edge fine structure by the fluorescence method, and is particu
Autor:
M. Daniel, Michael J. Mehl, Mahalingam Balasubramanian, Douglas M. Pease, Dale Brewe, J. I. Budnick
Publikováno v:
Physical Review B. 61:6637-6644
We have determined the site selectivity of Ru and Pd dopants in {beta}-phase NiAl. For both transition metal rich and poor compositions, the Ru or Pd dopant goes to the Ni sublattice. The local structural disorder introduced by Pd dopants is signific
Publikováno v:
Review of Scientific Instruments. 69:452-456
A noncontacting method for measuring mechanical strain between two fiducial marks has been developed for use where environmental conditions would be disruptive to methods utilizing optical light. A silicon 111 Johansson crystal is used for this appli
Publikováno v:
Physical Review B. 56:11449-11455
Temperature-dependent vibrational properties of \ensuremath{\beta}-phase NiAl, CoAl, and FeAl alloys have been studied by the extended x-ray-absorption-edge fine-structure (EXAFS) technique. From the $K$-edge EXAFS of the transition-metal element, th
Autor:
Douglas M Pease
The most important result reported relates to strain induced bond buckling and its role in insulating properties of Cr Doped V{sub 2}O{sub 3}.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbabd9d0ba965b0fc5a197d399ad732a
https://doi.org/10.2172/1083455
https://doi.org/10.2172/1083455
Autor:
William A. Hines, Douglas M. Pease, D. P. Yang, T.D. Xiao, W.Q. Xu, W.G. Fernando, Yin Zhang, N.X. Shen, J. I. Budnick
Publikováno v:
Scripta Metallurgica et Materialia. 33:1817-1824
Insertion of nitrogen of carbon into the interstitial sites of the R{sub 2}Fe{sub 17} compounds (R represents a rare-earth element) produces a significant improvement in their magnetic properties. The N and C atoms are accommodated mostly at the octa
Site-occupation tendencies for ternary additions (Fe, Co, Ni) in β-phase transition-metal aluminides
Publikováno v:
Physical Review B. 51:8102-8106
We have investigated, using extended x-ray-absorption fine-structure spectroscopy and x-ray-absorption near-edge spectroscopy, the local environment of Co dopants in \ensuremath{\beta}-phase transition-metal aluminides. In contrast to our previous fi