Ordered aggregates of ultrafine iron oxide particles: ‘Super crystals’
- 1 August 1989
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 60 (2) , 169-178
- https://doi.org/10.1080/13642818908211188
Abstract
Ultrafine iron oxide particles with a mean diameter of 6.9 nm and a very narrow size distribution have been studied by electron microscopy, Mössbauer spectroscopy, and X-ray diffraction. Electron micrographs and electron diffraction patterns show that the particles form ‘super crystals’, that is, three-dimensional ordered close-packed structures, with a nearest neighbour distance of 9.1 nm.Keywords
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