Fe16Nb6Si7 and Fe16Ta6Si7: New D8(a) phases synthesized by the crystallization of mechanically alloyed amorphous powders

Authors
Rixecker, G Haberkorn, R
Citation
G. Rixecker et R. Haberkorn, Fe16Nb6Si7 and Fe16Ta6Si7: New D8(a) phases synthesized by the crystallization of mechanically alloyed amorphous powders, J ALLOY COM, 316(1-2), 2001, pp. 203-208
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN journal
09258388 → ACNP
Volume
316
Issue
1-2
Year of publication
2001
Pages
203 - 208
Database
ISI
SICI code
0925-8388(20010302)316:1-2<203:FAFNDP>2.0.ZU;2-B
Abstract
Ternary phases with the cubic D8(a) structure (isostructural to Mg16Cu6Si7) were identified in both the Fe-Nb-Si and Fe-Ta-Si systems. They form durin g the crystallization of mechanically alloyed amorphous materials and are t hermally stable during heat treatments up to 90 h at 1050 degreesC. The X-r ay powder diffraction data were evaluated (i) by local line fit, and (ii) b y Rietveld analysis. Mossbauer spectroscopy was used to complement the XRD results and to show the absence of magnetic ordering above 77 K. (C) 2001 E lsevier Science B.V. All rights reserved.