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 OF MAGNETISM AND MAGNETIC MATERIALS, 176 (2-3). L89-L92. ISSN 0304-8853Full 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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