Description

The effect of nanostructure on the thermal oxidation of atomized iron has been investigated. Above 500oC atomized iron is oxidized in the presence of air. However, when iron is compacted with multiwalled carbon nanotubes (MWCNT) this oxidation is shifted by more than 100oC. Iron is protected by the nanostructure environment A large number of compositions of atomic ratios of iron and MWCNT have been examined in this study to understand the effect in detail. The effect of nanostructure in the thermal oxidation of iron is interpreted as due to iron atom experiencing extensive overlap and confinement effect causing spin transfer. Based on the theoretical calculations reported in the literature this confinement effect of iron is suggested to produce a transformation from 3d64s2 to an effective configuration of 3d84s0 producing spintronics effect. (Refer to PDF file for exact formulas).

Date of creation, presentation, or exhibit

Fall 2006

Comments

This is the post-print of a paper published by the Materials Research Society. © 2006 Materials Research Society. The final, published version is available here: https://doi.org/10.1557/PROC-0899-N07-01

Authors thank Dr. K. Narasimhan (Hoeganaes Corporation) for supplying atomized iron and for discussions.

Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type

Conference Paper

Department, Program, or Center

Center for Materials Science and Engineering

Campus

RIT – Main Campus

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