Regularities and features in the behavior of electrical and magnetic properties of Co$_2$FeZ (Z = Al, Si, Ga, Ge, Sn, Sb) half-metallic ferromagnetic Heusler alloys
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
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2024
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| author | Perevozchikova, Yu. A. Irkhin, V. Yu. Semiannikova, A. A. Marchenkov, V. V. |
| author_facet | Perevozchikova, Yu. A. Irkhin, V. Yu. Semiannikova, A. A. Marchenkov, V. V. |
| contents | The electrical resistivity, magnetization, and Hall effect in Co$_2$FeZ (Z = Al, Si, Ga, Ge, Sn, Sb) ferromagnetic Heusler alloys are studied. A number of correlations between the electronic and magnetic characteristics of the studied alloys are revealed while the atomic number of the Z-component changes. For the Co$_2$FeAl and Co$_2$FeSi half-metallic ferromagnets, the magnitude of magnetization is consistent with the Slater-Pauling rule. For the Co$_2$FeAl, Co$_2$FeSi, and Co$_2$FeGe compounds, a quadratic temperature dependence of electrical resistivity at temperatures below 30 K and above 65 K is found. At the same time, in the region of intermediate temperatures (from 40 K to 65 K), a power-law dependence of $T^b$ with an exponent of 3.5 < b < 4 is observed, which may be due to two-magnon scattering processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_12611 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Regularities and features in the behavior of electrical and magnetic properties of Co$_2$FeZ (Z = Al, Si, Ga, Ge, Sn, Sb) half-metallic ferromagnetic Heusler alloys Perevozchikova, Yu. A. Irkhin, V. Yu. Semiannikova, A. A. Marchenkov, V. V. Materials Science Strongly Correlated Electrons The electrical resistivity, magnetization, and Hall effect in Co$_2$FeZ (Z = Al, Si, Ga, Ge, Sn, Sb) ferromagnetic Heusler alloys are studied. A number of correlations between the electronic and magnetic characteristics of the studied alloys are revealed while the atomic number of the Z-component changes. For the Co$_2$FeAl and Co$_2$FeSi half-metallic ferromagnets, the magnitude of magnetization is consistent with the Slater-Pauling rule. For the Co$_2$FeAl, Co$_2$FeSi, and Co$_2$FeGe compounds, a quadratic temperature dependence of electrical resistivity at temperatures below 30 K and above 65 K is found. At the same time, in the region of intermediate temperatures (from 40 K to 65 K), a power-law dependence of $T^b$ with an exponent of 3.5 < b < 4 is observed, which may be due to two-magnon scattering processes. |
| title | Regularities and features in the behavior of electrical and magnetic properties of Co$_2$FeZ (Z = Al, Si, Ga, Ge, Sn, Sb) half-metallic ferromagnetic Heusler alloys |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2410.12611 |