Model Pair Distribution Functions for Amorphous Binary Metal–Metalloid Alloys Based on Crystal-Like Short-Range Order

The importance of amorphous rare-earth/transition-metal (Re-TM) alloys for use as magneto-optic (MO) storage media has been shown first in 1973. First atomic structural data of amorphous Fe2Tb were given in 1974 and compared with those of a crystalline counterpart, which is the well-known Laves phase. Significant differences of short range order (sro) in amorphous and crystalline Fe2Tb have been found. Similiar results were given in 1986 for a composition Fe79Tb21, to be used for MO-recording.In this work we present pair distribution functions (PDF’s) determined from electron diffraction data for amorphous FeTb alloys. It has been shown that Fourier transformation of the experimental observed diffraction intensities gives the original infinite lattice of an investigated (crystalline) specimen multiplied by its selfcorrelation-function. Therefore the PDF approaches zero for r-values greater than the distance ro representing the mean dimension of a crystal.

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Investigations of short range order in amorphous Fe-B alloys

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100104352 ◽

1988 ◽

Vol 46 ◽

pp. 458-459

Author(s):

J. Zweck ◽

H. Hoffmann

Keyword(s):

Physical Properties ◽

Short Range ◽

Short Range Order ◽

Amorphous State ◽

High Resolution Electron Microscopy ◽

Near Neighbor ◽

Distribution Functions ◽

Range Order ◽

Resolution Electron ◽

Pair Distribution Functions

Amorphous metallic alloys exhibit a large variety of physical properties that often differ from their crystalline counterparts of the same composition. Currently, metallic glasses exist which, to name only a few examples, are either very non-abrasive, soft magnetic and magneto optical, hard, flexible, or resistant to corrosion. These properties are of great technical importance and there are many applications that are based on amorphous alloys. Since physical properties are related to the structure of a material, a better knowledge of the ‘structure’ of the amorphous state is of great interest. In this work, we present pair distribution functions determined from electron diffraction results for amorphous Fe-B alloys of different compositions. From the pair distribution functions one can obtain information about near neighbor distances, the range of a short range order (SRO) for different compositions, and of similarities to crystalline counterparts. These findings will also be compared to results obtained with the use of high resolution electron microscopy (HREM).

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Structure of shear bands in Pd40Ni40P20 bulk metallic glass

Journal of Materials Research ◽

10.1557/jmr.2009.0001 ◽

2009 ◽

Vol 24 (1) ◽

pp. 1-9 ◽

Cited By ~ 33

Author(s):

Y.M. Chen ◽

T. Ohkubo ◽

T. Mukai ◽

K. Hono

Keyword(s):

Electron Microscopy ◽

Metallic Glass ◽

Bulk Metallic Glass ◽

Short Range ◽

Short Range Order ◽

Shear Bands ◽

Distribution Functions ◽

Uniform Thickness ◽

Transmission Electron ◽

Pair Distribution Functions

The atomic structure of shear bands in Pd40Ni40P20 bulk metallic glass has been compared to an undeformed matrix phase using pair distribution functions (PDFs) derived from energy filtered nanobeam electron diffraction. Shear bands do not show any characteristic contrast in transmission electron microscopy (TEM) images when specimens are prepared with uniform thickness. PDFs from a shear band exhibit a slight decrease in the first peak, indicating a slight difference in packing density and short range order compared to the undeformed matrix.

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Studies of short-range order in amorphous polymers by radial distribution functions derived from X-ray diffraction

Journal of Macromolecular Science Part B ◽

10.1080/00222347608215175 ◽

1976 ◽

Vol 12 (1) ◽

pp. 99-123 ◽

Cited By ~ 8

Author(s):

C. D. Wignall ◽

G. W. Longman

Keyword(s):

Radial Distribution ◽

Short Range ◽

Short Range Order ◽

Amorphous Polymers ◽

Distribution Functions ◽

Range Order ◽

Radial Distribution Functions ◽

X Ray Diffraction ◽

X Ray

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Partial Atomic Distribution Functions of Liquid Fe75B25

Zeitschrift für Naturforschung A ◽

10.1515/zna-1988-0214 ◽

1988 ◽

Vol 43 (2) ◽

pp. 177-180 ◽

Cited By ~ 1

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.

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Evolution of short-range order in chemically and physically grown thin film bilayer structures for electronic applications

Nanoscale ◽

10.1039/d0nr01847c ◽

2020 ◽

Vol 12 (24) ◽

pp. 13103-13112

Author(s):

Ann-Christin Dippel ◽

Olof Gutowski ◽

Lars Klemeyer ◽

Ulrich Boettger ◽

Fenja Berg ◽

...

Keyword(s):

Thin Film ◽

Thin Films ◽

Short Range ◽

Short Range Order ◽

Incidence Angle ◽

Grazing Incidence ◽

Distribution Functions ◽

Individual Layer ◽

X Ray ◽

Pair Distribution Functions

The local atomic structure of two stacked thin films is probed by applying grazing incidence x-ray total scattering at variable incidence angle and resolving pair distribution functions for each individual layer.

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