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Magnetic correlations in paramagnetic iron

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journal contribution
posted on 29.06.2006, 11:10 authored by John SamsonJohn Samson
A method is described for calculating the extent of short-range order (SRO) in the paramagnetic state of magnetic transition metals. An energy V is calculated for a set of configurations of the exchange field. An entropy S is attached to each configuration; this is the logarithm of the number of configurations with the same degree of long- and short-range magnetic order. The SRO is then found by minimizing the resulting free energy V-TS with respect to a near-neighbour correlation. The resulting Curie temperature Tc and the magnetic entropy are in good agreement with experiment. The corresponding nearest neighbour correlation is small (approximately cos 74°) at Tc.

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  • Science

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  • Physics

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1049511 bytes

Citation

SAMSON (1989), Magnetic correlations in paramagnetic iron. Journal of Physics: Condensed Matter, 1(37), pp 6717-6729

Publisher

© Institute of Physics

Publication date

1989

Notes

This article was published in the journal, Journal of Physics: Condensed Matter [© Intsitute of Physics] and is also available at: http://www.iop.org/EJ/journal/JPhysCM.

ISSN

0953-8984

Language

en

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