Crystallite size dependence on the magnetic properties of nanocrystalline magnetite powders
UNSPECIFIED (1997) Crystallite size dependence on the magnetic properties of nanocrystalline magnetite powders. [Journal Item]Full text not available from this repository.
Single phase magnetite powders with crystallite sizes ranging from 8-50 nm were synthesised and studied using X-ray diffraction and Mossbauer spectroscopy. Lattice parameters were seen to decrease at very small crystallite sizes. Quadrupole splitting of the B sites increased with decreasing crystallite size before the spectrum collapsed into a doublet at the smallest sizes. These observations have been explained in terms of high surface-to-volume ratios in the small nanocrystals creating excessive lattice strain and large electric field gradients. (C) 1997 Elsevier Science B.V. All rights reserved.
|Item Type:||Journal Item|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
|Journal or Publication Title:||JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS|
|Publisher:||ELSEVIER SCIENCE BV|
|Number of Pages:||4|
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