Zobrazeno 1 - 10
of 16
pro vyhledávání: '"D. J. Fatemi"'
Autor:
Everett E. Carpenter, Gary J. Long, J. O. Cross, Amitabh Mohan, J. P. Kirkland, V. M. Browning, Vincent G. Harris, D. J. Fatemi
Publikováno v:
Journal of Applied Physics. 94:496-501
MnZn ferrites have been produced via the high-energy ball milling of binary oxide precursors. The milled ferrites have a nonequilibrium cation site distribution, with an unusually high population of Zn cations on the octahedral sites. The particle si
Autor:
D. J. Gillespie, Michael B. Liou, D. J. Fatemi, Shaheen M. Islam, V. M. Browning, Vincent G. Harris
Publikováno v:
Journal of Applied Physics. 86:1607-1610
A La0.67Ca0.33MnO3−δ alloy was produced via a low-temperature solid state reaction in a high-energy ball mill. The milled alloy is found to exhibit the paramagnetic-to-ferromagnetic (P–F) transition at 150 K. However, the widely reported insulat
Publikováno v:
The Journal of Chemical Physics. 110:5100-5108
We have used photoelectron spectroscopy to observe thermal isomerization in cesium–halide cluster anions. In many of the (CsX)nCsm− (X=Cl, Br, I; n=2–7; m=0, 1) systems we have studied, small changes in the source nozzle temperature produce dra
Publikováno v:
Physical Review B. 55:10094-10098
We have used photoelectron spectroscopy to study alkali-rich sodium iodide and cesium chloride clusters in order to determine how their composition affects their electronic properties. Spectral features of (Na I${)}_{\mathrm{n}}$${\mathrm{Na}}_{\math
Publikováno v:
Journal of Synchrotron Radiation. 6:773-775
Publikováno v:
Journal of Applied Physics. 85:5181-5183
The equiatomic FeAl alloy has been modified by partial substitution of Mn for Fe, and its magnetic and structural properties investigated by neutron diffraction (ND), x-ray absorption fine structure (XAFS) spectroscopy, Mossbauer spectroscopy (MS), a
Autor:
Mingxing Chen, D. J. Fatemi, William B. Yelon, Satish K. Malik, Gary J. Long, Vincent G. Harris, Amitabh Mohan
Publikováno v:
Journal of Applied Physics. 85:5172-5174
MnZn–ferrite has been prepared via high-energy ball milling of elemental oxides MnO, ZnO, and α-Fe2O3. Neutron diffraction measurements suggest a high density of vacancies in a spinel structure. The spinel phase appears to comprise 99.8 wt % of th
Publikováno v:
Journal of Applied Physics. 83:6867-6869
We have produced MnZn ferrites via high-energy ball milling (HEBM) of elemental oxides MnO, ZnO, and Fe2O3. X-ray diffraction (XRD) indicates a pure phase spinel forms after 21 h of HEBM. Extended x-ray absorption fine structure (EXAFS) analysis show
Publikováno v:
Journal of Applied Physics. 83:6920-6922
Extended x-ray absorption fine structure measurements of the Fe K, and Pr and Er LIII absorption edges, were carried out to elucidate the relationship between the local structure and magnetism in Al substituted, partially nitrogenated (Er0.5Pr0.5)2Fe
Publikováno v:
Journal of Applied Physics. 83:6783-6785
Extended x-ray absorption fine structure (EXAFS) measurements on nonsuperconducting PrBa2Cu3O6.9 are reported. Theoretical Pr LII EXAFS data, calculated for the case of Y-site and Ba-site occupation, were least-squares fit to the experimental Pr LII