Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3

Herth S, Rosner H, Rempel AA, Schaefer HE, Wurschum R (2003)
ZEITSCHRIFT FUR METALLKUNDE 94(10): 1073-1078.

Journal Article | Published | English

No fulltext has been uploaded

Author
; ; ; ;
Abstract
The present paper reports on a combined analytical and structural study of nanocrystalline Fe90Zr7B3 by means of positron annihilation, (analytical) high-resolution transmission electron microscopy (HRTEM), and X-ray diffraction. Particular focus is laid on the chemical nature of the intergranular amorphous matrix which occurs between the alpha-Fe nanocrystallites. Energy-dispersive X-ray measurements (EDX) with an electron nanobeam reveal an increased Zr content at the interface between the nanocrystallites and the intergranular amorphous phase. According to positron lifetime measurements, the intergranular amorphous phase and the interfaces between this phase and the nanocrystallites exhibit structural free volumes of the mean size slightly smaller than a lattice vacancy as in the amorphous precursor material. Coincident Doppler broadening measurements of the positron-electron annihilation photons show that the fraction of Zr in the neighborhood of the structural free volumes is higher in nanocrystalline Fe90Zr7B3 than in the amorphous state indicating an enhanced Zr concentration in the interfaces. These results are in good agreement with the HRTEM/ EDX studies and demonstrate the potentials of the coincident Doppler broadening technique for a chemical characterization of structurally complex materials on an atomistic scale.
Publishing Year
ISSN
PUB-ID

Cite this

Herth S, Rosner H, Rempel AA, Schaefer HE, Wurschum R. Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3. ZEITSCHRIFT FUR METALLKUNDE. 2003;94(10):1073-1078.
Herth, S., Rosner, H., Rempel, A. A., Schaefer, H. E., & Wurschum, R. (2003). Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3. ZEITSCHRIFT FUR METALLKUNDE, 94(10), 1073-1078.
Herth, S., Rosner, H., Rempel, A. A., Schaefer, H. E., and Wurschum, R. (2003). Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3. ZEITSCHRIFT FUR METALLKUNDE 94, 1073-1078.
Herth, S., et al., 2003. Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3. ZEITSCHRIFT FUR METALLKUNDE, 94(10), p 1073-1078.
S. Herth, et al., “Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3”, ZEITSCHRIFT FUR METALLKUNDE, vol. 94, 2003, pp. 1073-1078.
Herth, S., Rosner, H., Rempel, A.A., Schaefer, H.E., Wurschum, R.: Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3. ZEITSCHRIFT FUR METALLKUNDE. 94, 1073-1078 (2003).
Herth, Simone, Rosner, H, Rempel, AA, Schaefer, HE, and Wurschum, R. “Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3”. ZEITSCHRIFT FUR METALLKUNDE 94.10 (2003): 1073-1078.
This data publication is cited in the following publications:
This publication cites the following data publications:

Export

0 Marked Publications

Open Data PUB

Web of Science

View record in Web of Science®

Search this title in

Google Scholar