| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1369 - C8-1270 | |
| DOI | https://doi.org/10.1051/jphyscol:19888627 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1369-C8-1270
DOI: 10.1051/jphyscol:19888627
1 Laboratory of Applied Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
2 Chemistry Department, Royal Veterinary and Agricultural University, DK-1871 Frederiksberg C, Denmark
3 Department of Physics, University College of North Wales, Bangor LL57, 2 U. W., G.B.
J. Phys. Colloques 49 (1988) C8-1369-C8-1270
DOI: 10.1051/jphyscol:19888627
ULTRAFINE PARTICLES OF AMORPHOUS Fe62B38 : A STUDY OF STRUCTURAL RELAXATION AND CRYSTALLIZATION
S. Linderoth1, S. Mørup1, C. J. W. Koch2, S. Wells3, S. W. Charles3, J. van Wonterghem1 et A. Meagher11 Laboratory of Applied Physics, Technical University of Denmark, DK-2800 Lyngby, Denmark
2 Chemistry Department, Royal Veterinary and Agricultural University, DK-1871 Frederiksberg C, Denmark
3 Department of Physics, University College of North Wales, Bangor LL57, 2 U. W., G.B.
Abstract
Ultrafine particles of Fe62B38 have been produced by reduction of Fe(II) in aqueous solution using KBH4. Mössbauer spectroscopy and X-ray diffraction studies show that the particles are amorphous. Structural relaxation occurs at ~ 525 K and crystallization at ~ 715 K, where Fe2B and α-Fe phases are formed. The particles exhibit relatively large intrinsic coercivities of 200 Oe.