Synthesis and magnetic properties of iron sulfide nanosheetswith a NiAs-like structure

We have synthesized the hexagonal pyrrhotite Fe 1 − x S nanodisks with the NiAs-type structure via thermal decomposition of ferrous chloride and thiourea in oleylamine. Mössbauer spectra analysis shows that the main part of iron of hexagonal pyrrhotite is in the Fe 2 + valence state, and the spectru...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2010-05, Vol.107 (9), p.09A335-09A335-3
Main Authors: Lin, Chun-Rong, Lu, Shin-Zong, Lyubutin, Igor S., Korzhetskiy, Yu V., Wang, Sheng-Chang, Suzdalev, Igor P.
Format: Article
Language:
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have synthesized the hexagonal pyrrhotite Fe 1 − x S nanodisks with the NiAs-type structure via thermal decomposition of ferrous chloride and thiourea in oleylamine. Mössbauer spectra analysis shows that the main part of iron of hexagonal pyrrhotite is in the Fe 2 + valence state, and the spectrum has broadened half-maximum width due to the vacancy distribution. Magnetic measurements indicate that the magnetic moment configuration of nanodisks transforms from the ferrimagnetic to the ferromagnetic state at 400 K and magnetic moment disordering takes place at the Curie temperature, 580 K, at which ferromagnetic state transforms to paramagnetic structure. This magnetic transition behavior can be explained in terms of the iron vacancy rearrangement.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3367968