Short-range order in metals above the Curie temperature
We use the dynamic spin-fluctuation theory to study spin-density correlations in ferromagnetic metals above the Curie temperature. We calculate the spatial spin-correlation function, dynamic susceptibility and local magnetic moment. The dynamic susceptibility is related to the energy-integrated scat...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2018-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5041420 |
| Summary: | We use the dynamic spin-fluctuation theory to study spin-density correlations in ferromagnetic metals above the Curie temperature. We calculate the spatial spin-correlation function, dynamic susceptibility and local magnetic moment. The dynamic susceptibility is related to the energy-integrated scattering cross-section (effective moment). Calculated effective and local moments of Fe and Ni are found in good agreement with results of polarized neutron scattering experiment over a wide temperature range. We find that short-range order remains up to distances of about 6 Å in Fe and 8 Å in Ni at TTC = 1.1 and slowly decreases with temperature. |
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| ISSN: | 2158-3226 |