Zobrazeno 1 - 10
of 78
pro vyhledávání: '"W. B. Yelon"'
Autor:
T. K. Datta, S. Aktar, W. B. Yelon, S.M. Yunus, I. Kamal, A.K.M. Zakaria, Shahzad Hossain, R. Berliner, Amita Das
Publikováno v:
AIP Conference Proceedings.
A high performance neutron diffractometer called Savar Neutron Diffractometer (SAND) was built and installed at radial beam port-2 of TRIGA Mark II research reactor at AERE, Savar, Dhaka, Bangladesh. Structural studies of materials are being done by
Publikováno v:
Journal of Alloys and Compounds. 309:75-82
Hydrogen storage capacity and crystal structure of hydrogen-free Zr3V3O0.6 and its saturated deuteride, Zr3V3OxD9.6, have been studied using both X-ray and neutron powder diffraction. Experimental data together with the geometrical analysis of the cr
Publikováno v:
Journal of Applied Physics. 86:3290-3294
Powder neutron diffraction studies were carried out on (Ho1−xErx)2Fe15Ga2Cy (x=0, 0.5, 1; y=0, 2) with a view to study the effect of substitution of Ga for Fe and the insertion of carbon at the interstitial sites on the structural and magnetic prop
Publikováno v:
Journal of Alloys and Compounds. 266:32-38
The grayish–black ternary nitride LixMn2−xN (x≈0.67) was prepared from lithium nitride, manganese powder and nitrogen. The phase adopts an anti-Rutile structural arrangement with lithium and manganese atoms disordered on one site: Space group P
Autor:
M. Chen, Sy_Hwang Liou, Qingsheng Cai, A. L. Vasiliev, M. Chandrasekhar, R. Li, E. P. Kvam, H. Luo, W. B. Yelon
Publikováno v:
Journal of Superconductivity: Incorporating Novel Magnetism. 11:59-62
The HgBa2CuO4+δ sample was characterized by Neutron diffraction and magnetic measurements. Both of the measurements indicate a high purity of the sample. Raman measurement was performed on a HgBa2CuO4+δ compound of Tc = 96 K. The apical oxygen vibr
Autor:
Z. Hu, W. B. Yelon
Publikováno v:
Journal of Applied Physics. 80:6175-6178
A sample of Nd2Fe17Nx previously studied has been remeasured with higher‐resolution powder neutron diffraction. Rietveld analysis confirms the existence of two values of x. The higher x corresponds to nearly full occupation of the octahedral 9e sit
Publikováno v:
Journal of Applied Physics. 80:2955-2959
The structure of Nd3Fe29−xTixNy has been determined by neutron diffraction and compared with the unnitrided parent. Nitrogen is found in the two large octahedral interstitial sites with four Fe and two rare‐earth neighbors, leading to a concentra
Autor:
W. B. Yelon, Z. Hu
Publikováno v:
Journal of Applied Physics. 79:1330-1336
Rietveld analysis of neutron‐diffraction data from Nd3Fe29−xTx (T=Ti, Cr, and Mn) has been used to determine the location of the substitutional atoms and the magnetic moments. Reanalysis of the T=Ti data confirms that the space group A2/m is a be
Autor:
W. B. Yelon, M. Popovici
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 209:640-648
The strong focusing of neutron beams by reflection from two bent crystals in antiparallel (+, +) setting is discussed. A previous analysis made for thin perfect crystals is extended, by numerical computations, to the case of a thick and mosaic first
Publikováno v:
ChemInform. 24
The most recent and exciting development in permanent magnet research is the discovery of rare-earth nitrides and carbides with the 2:17- and l:12- type structures. Nitrogen and carbon enter the lattice interstitially, expanding the volume of the uni