Consistent partial structure factors for amorphousNi0.33(ZryHf1−y)0.67using x-ray and neutron diffraction

1996 ◽  
Vol 53 (14) ◽  
pp. 8983-8992 ◽  
Author(s):  
Yan Xu ◽  
W. B. Muir ◽  
Z. Altounian ◽  
W. J. L. Buyers ◽  
R. L. Donaberger
Keyword(s):  
Neutron Diffraction ◽  
Partial Structure ◽  
X Ray ◽  
Structure Factors

Partial Atomic Distribution Functions of Liquid Fe75B25

1988 ◽  
Vol 43 (2) ◽  
pp. 177-180 ◽  
Author(s):  
N. Mattern ◽  
W. Matz ◽  
H. Hermann
Keyword(s):  
Neutron Diffraction ◽  
Short Range ◽  
Short Range Order ◽  
Distribution Functions ◽  
Range Order ◽  
Experimental Results ◽  
Partial Structure ◽  
X Ray ◽  
Atomic Distribution ◽  
Structure Factors

Abstract Partial structure factors and atomic distribution functions for liquid Fe75 B25 were determined for the Fe-Fe and Fe-B pairs by means of X-ray and neutron diffraction. The experimental results show a strong chemical short-range order in the melt which is similar to that of amorphous Fe75B25.

Short Range Structure of Amorphous Ni50Ta50-Alloys by Means of X-Ray- and Neutron-Diffraction

1992 ◽  
Vol 47 (7-8) ◽  
pp. 826-832 ◽  
Author(s):  
H. Uhlig ◽  
L. Rohr ◽  
H.-J. Güntherodt ◽  
P. Fischer ◽  
P. Lamparter ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Short Range ◽  
Short Range Order ◽  
Nearest Neighbor ◽  
Range Order ◽  
Partial Structure ◽  
X Ray ◽  
Coordination Numbers ◽  
Binding Behavior ◽  
Structure Factors

Abstract Amorphous Ni50Ta50-samples with their high crystallization temperature of 985 K were investigated. To evaluate the three partial structure factors of amorphous Ni50Ta50 one X-ray diffraction experiment was performed with Ni50Ta50 and two neutron diffraction experiments with Co10Ni40Ta50 and with Ni50Ta50, respectively. The Bhatia-Thornton partial structure factor SCC(Q) indicates rather strong chemical short range order which also explains the premaximum observed in the Faber-Ziman partial SNiNi(Q)-function. The nearest neighbor distance is 2.82 Å for Ni-Ni, 2.91 Å for Ta-Ta, and is shortest for Ni-Ta, 2.44 Å. The coordination numbers are NNiNi = 4.9, NTaTa = 8.2, and NNiTa = 6.0. We report on the chemical short range order and the possible binding behavior in a-Ni50Ta50 and compare the present results with those reported in the literature on a-Ni40Ti60 as well as on a-Ni55Ta45

Electron Diffraction with the Amorphous Alloys Fe80B20 and Mn73Si27

1982 ◽  
Vol 37 (11) ◽  
pp. 1215-1222
Author(s):  
F. Paasche ◽  
H. Olbrich ◽  
G. Rainer-Harbach ◽  
P. Lamparter ◽  
S. Steeb
Keyword(s):  
Electron Diffraction ◽  
Neutron Diffraction ◽  
Amorphous Alloys ◽  
Pair Correlation ◽  
Diffraction Experiment ◽  
Partial Structure ◽  
Neutron Diffraction Experiment ◽  
X Ray ◽  
Structure Factors ◽  
Beam Experiment

Electron diffraction with amorphous Fe80B20 and Mn73Si27 yields structure factors and pair correlation functions which are discussed together with the results of X-ray- and neutron-diffraction experiments. For Mn73Si27 additional interesting details are revealed. A tetrahedral model for Mn73Si27 is described. Finally we show that the evaluation of partial structure factors by the three beam experiment, i.e. the combination of an electron-, X-ray- and neutron-diffraction experiment is not possible in general.

A determination of the partial structure factors of liquid TlSe using combined x-ray and neutron diffraction

1998 ◽  
Vol 10 (37) ◽  
pp. L645-L650 ◽  
Author(s):  
A C Barnes ◽  
S B Lague ◽  
M A Hamilton ◽  
H E Fischer ◽  
A N Fitch ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Partial Structure ◽  
X Ray ◽  
Structure Factors

DETERMINATION BY POLARIZED NEUTRON DIFFRACTION OF THE THREE PARTIAL STRUCTURE FACTORS OF A Co81.511B18.5 GLASS

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-23-C9-29
Author(s):  
J. M. Dubois ◽  
P. Chieux ◽  
G. Le Caer ◽  
J. Schweitzer ◽  
J. Bletry
Keyword(s):  
Neutron Diffraction ◽  
Partial Structure ◽  
Structure Factors ◽  
Polarized Neutron

scholarly journals X-Ray and Neutron Diffraction of Amorphous Nickel-Zirconium-Alloys as Prepared in Different Ways

1991 ◽  
Vol 46 (6) ◽  
pp. 491-498 ◽  
Author(s):  
L. Schultz ◽  
P. Lamparter ◽  
S. Steeb
Keyword(s):  
Neutron Diffraction ◽  
Short Range ◽  
Melt Spinning ◽  
Short Range Order ◽  
Pair Correlation ◽  
Zirconium Alloys ◽  
X Ray ◽  
Coordination Numbers ◽  
Structure Factors ◽  
The One

AbstractThe structure of amorphous NiχZr100-χ-alloys (Χ= 30, 31, 34, 63.7, and 65), which were produced by melt spinning (MS), mechanical alloying (MA), and sputtering (SP) was studied by X-ray- and neutron diffraction yielding structure factors, pair correlation functions, coordination numbers, atomic distances, and Warren-Cowley chemical short range order parameters. The atomic arrangement within the first coordination sphere is independent of the method of preparation while in the second and higher spheres it differs between the MS- and the MA-alloys on the one side and the SP-specimens on the other side. Thus one understands that some physical properties of the different specimens differ

X-ray- and Neutron-diffraction Studies with Quasicrystalline and Amorphous Al-V- and Al-Mn-alloys

1990 ◽  
Vol 45 (5) ◽  
pp. 627-638
Author(s):  
S. Seehafer ◽  
P. Lamparter ◽  
S. Steeb
Keyword(s):  
Neutron Diffraction ◽  
Coordination Number ◽  
Correlation Functions ◽  
Melt Spinning ◽  
Pair Correlation ◽  
Partial Density ◽  
Isomorphous Substitution ◽  
Hard Sphere Model ◽  
X Ray ◽  
Structure Factors

Abstract Amorphous and quasicrystalline samples of Al84Mn16 and Al84V16 were produced by sputtering and melt-spinning, respectively. From X-ray and neutron-diffraction-results the total structure factors were evaluated. For amorphous as well as for quasicrystalline Al84V16 the partial SAl-Al- and SAl-V-structure factors were obtained, which yield the corresponding partial pair correlation functions, the atomic distances, and the partial coordination numbers. Also some information concerning the partial Bhatia-Thornton correlation functions could be obtained. Both the amorphous and the quasicrystalline Al-V-alloys show a linear expansion by a factor of 1.03 compared to the corresponding Al-Mn-alloy. The two amorphous alloys can be designed as isomorphous, whereas the quasicrystalline ones show pronounced deviations in the distance between unequal atoms. The shortest atomic distance in amorphous Al84V16 is 2.69 A, being,formed by Al-V-pairs with a coordination number 2. The nearest Al-Al-distance amounts to 2.84 A with a coordination number 8. The partial density-concentration correlation function clearly deviates from the hard sphere model. With the quasicrystalline specimens, the isomorphous substitution of Mn- and V-atoms is not perfect. The Al-V-correlation is split up, and this is not observed for the Al-Mn-correlation. Comparison of the amorphous and the corresponding quasicrystalline alloy shows some similarities

Partial structure factors of amorphous Ni2Zr by anomalous X-ray scattering

1992 ◽  
Vol 151 (1-2) ◽  
pp. 119-128 ◽  
Author(s):  
F. Buffa ◽  
A. Corrias ◽  
G. Licheri ◽  
G. Navarra ◽  
D. Raoux
Keyword(s):  
Partial Structure ◽  
X Ray ◽  
X Ray Scattering ◽  
Structure Factors ◽  
Ray Scattering
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