| Autor: |
Sakon, T., Hayashi, Y., Fujimoto, N., Kanomata, T., Nojiri, H., Adachi, Y. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2018, Vol. 123 Issue 21, pN.PAG-N.PAG, 4p, 1 Chart, 6 Graphs |
| Abstrakt: |
An investigation on the relationship between magnetostriction and magnetization by means of the self-consistent renormalization (SCR) theory of an itinerant ferromagnet was performed for Ni2MnGa alloy. The magnetization results at the Curie temperature TC suggest that the critical index δ of H ∝ Mδ is 4.7–5.0, and this confirms Takahashi's spin fluctuation theory and the result of Nishihara et al. As a result, at TC, the relation between magnetostriction and M2 deviates from proportionality and the magnetostriction is proportional to M4. At TC, the plot of ΔL/L vs M4 crossed the point of origin. This result is in accordance with Takahashi's spin fluctuation theory. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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