| Autor: |
Nicholson, D. M. C., Kisner, R. A., Ludtka, G. M., Sparks, C. J., Petit, L., Jaramillo, Roger, Mackiewicz-Ludtka, G., Wilgen, J. B., Sheikh-Ali, Askar, Kalu, P. N. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 6/1/2004, Vol. 95 Issue 11, p6580-6582, 3p, 3 Charts, 2 Graphs |
| Abstrakt: |
Identically prepared samples of Fe0.85Ni0.15 were annealed either in the ambient magnetic field or in a field of 29 T. Room temperature x-ray powder diffraction measurements that were performed after magnetic annealing showed that the ratio of the volume of the γ to α phase is decreased in the field-annealed sample by a factor of 2. First-principles calculations of the magnetic structure in the presence of a magnetic field are used to compute the resulting change in free energy. Analysis in terms of the phase diagram calculated with and without a magnetic field is in substantial agreement with the measurements. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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