Science

Permanent URI for this communityhttp://repository.kln.ac.lk/handle/123456789/1

Browse

Filters

19941

Settings

Author: search.filters.author.Kaczmarek, W.A.Subject: search.filters.subject.Measure theory

Search Results

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    A Mössbauer effect study of barium ferrite ball-milled in air
    (Hyperfine Interactions, 1994) Jayasuriya, K.D.; Kaczmarek, W.A.; Wu, E.; Campbell, S.J.
    The effects of dry-milling BaFe12O19 in air for periods of 190, 360, 590, 690 and 1000 h have been investigated by X-ray diffraction and M�ssbauer effect measurements. The sizes of the BaFe12O19 particles decrease on milling, as expected, although a partial decomposition of BaFe12O19 to ?-Fe2O3 is found to take place on extended milling (1000 h). The room temperature M�ssbauer spectra are consistent with superparamagnetic relaxation associated with the fine BaFe12O19 and ?-Fe2O3 particles. The X-ray diffraction patterns of all the milled samples exhibit features indicative of a disordered structural state, consistent with the nanoscale particles and a nanostructured state.