ISSN:
1432-0630
Keywords:
76.80
;
75.60JP
;
82.65
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Nano-sized α-Fe2O3 particles coated with polar organic molecules have been studied using the Mössbauer spectroscopy method. The α-Fe2O3 nanoparticles were prepared by the microemulsion method. The average particle size of the Fe2O3 particles is about 24 Å. Because the particle size is so small that the Mössbauer spectra of the α-Fe2O3 samples only consist of a quadrupole-split central line. It was proved that the Isomer Shifts (DIS) and the Quadrupole Splitting (DQS) changed as the refluxing time prolongs and the refluxing temperature increases during the preparation of the Fe2O3 nanoparticles, which implied an enhancement of the surface electrofield gradient formed by the surface coated polar molecules during the refluxing process.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01571687
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