MOSSBAUER-SPECTROSCOPY OF NANOCRYSTALLINE PURE IRON PREPARED BY MECHANICAL MILLING

Authors
TANAKA T NASU S HUANG B ISHIHARA KN SHINGU PH
Citation
T. Tanaka et al., MOSSBAUER-SPECTROSCOPY OF NANOCRYSTALLINE PURE IRON PREPARED BY MECHANICAL MILLING, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 76(1-4), 1993, pp. 195-196
Citations number
6
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
76
Issue
1-4
Year of publication
1993
Pages
195 - 196
Database
ISI
SICI code
0168-583X(1993)76:1-4<195:MONPIP>2.0.ZU;2-I
Abstract
Pure alpha-Fe powder was ground down mechanically by use of a conventi onal type ball-mill. Kneading of alpha-Fe powders by 2000 h milling cr eates nanometer-size crystalline grains showing a broad X-ray diffract ion pattern. Fe-57 Mossbauer absorption spectrum obtained from the gro und powder consists of a pure bcc Fe component showing a sharp absorpt ion dip and broad components with smaller hyperfine magnetic fields at 30 K. The intensity of the broad components decreases slightly at 10 K and a component having a large hyperfine field newly appeared to sug gest the existence of finely dispersed iron oxides.