| Autor: |
Lee, S. J., Lo, C. C. H., Matlage, P. N., Song, S. H., Melikhov, Y., Snyder, J. E., Jiles, D. C. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Oct2007, Vol. 102 Issue 7, p073910, 4p, 1 Chart, 4 Graphs |
| Abstrakt: |
We have investigated the magnetic and magnetoelastic properties of a series of Cr-substituted cobalt ferrite CoCrxFe2-xO4 (x=0.0–0.79) samples. Substitution of Cr for some of the Fe in cobalt ferrite reduced the Curie temperature, and the effect is more pronounced than that observed in Mn-substituted cobalt ferrite samples. Cr substitution also caused the maximum magnetostriction to decrease at a greater rate than substitution of the same amount of Mn. The maximum of the strain derivative, dλ/dH, was reached for x=0.38. The behavior of the Curie temperature of Cr-substituted and Mn-substituted cobalt ferrites has been analyzed using the Néel molecular field model and compared with recent Mössbauer spectroscopy results. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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