Room- and low-temperature magnetic parameters of Y$_3$AlFe$_4$O$_{12}$ garnets
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arXiv
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2024
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| author | Borynskyi, Vladyslav Popadiuk, Dariia Kravets, Anatolii Shlapa, Yuliia Solopan, Serhii Korenivski, Vladislav Belous, Anatolii Tovstolytkin, Alexandr |
| author_facet | Borynskyi, Vladyslav Popadiuk, Dariia Kravets, Anatolii Shlapa, Yuliia Solopan, Serhii Korenivski, Vladislav Belous, Anatolii Tovstolytkin, Alexandr |
| contents | Magnetic properties of Y$_3$AlFe$_4$O$_{12}$ garnet ceramics have been studied over a wide range of temperature ($3-370$ K) and magnetic fields (up to $2$ kOe). Effects of varying the temperature on some of the application-specific magnetic characteristics have been analyzed in detail. With the decrease in temperature, the effective anisotropy constant, $K_{Eff}$, is found to sharply rise below $\sim150$ K, while the saturation magnetization, $M_s$, changes only slightly ($<20\%$ within $3-250$ K). The exchange stiffness, $A_{ex}$, and spin wave stiffness, $D$, parameters mirror the relatively smooth behavior of the magnetization at low temperatures but display a rapid drop when $T$ approaches $T_C\approx436$ K. The temperature dependence of the domain wall thickness and the critical single-domain size correlate with the corresponding values for pure Y$_3$Fe$_5$O$_{12}$ (YIG) and are in agreement with the theoretical estimates. We conclude by discussing the ways of how to use the obtained results for tailoring the magnetic properties of YIG-based materials for technological applications. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_05879 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Room- and low-temperature magnetic parameters of Y$_3$AlFe$_4$O$_{12}$ garnets Borynskyi, Vladyslav Popadiuk, Dariia Kravets, Anatolii Shlapa, Yuliia Solopan, Serhii Korenivski, Vladislav Belous, Anatolii Tovstolytkin, Alexandr Mesoscale and Nanoscale Physics Materials Science Magnetic properties of Y$_3$AlFe$_4$O$_{12}$ garnet ceramics have been studied over a wide range of temperature ($3-370$ K) and magnetic fields (up to $2$ kOe). Effects of varying the temperature on some of the application-specific magnetic characteristics have been analyzed in detail. With the decrease in temperature, the effective anisotropy constant, $K_{Eff}$, is found to sharply rise below $\sim150$ K, while the saturation magnetization, $M_s$, changes only slightly ($<20\%$ within $3-250$ K). The exchange stiffness, $A_{ex}$, and spin wave stiffness, $D$, parameters mirror the relatively smooth behavior of the magnetization at low temperatures but display a rapid drop when $T$ approaches $T_C\approx436$ K. The temperature dependence of the domain wall thickness and the critical single-domain size correlate with the corresponding values for pure Y$_3$Fe$_5$O$_{12}$ (YIG) and are in agreement with the theoretical estimates. We conclude by discussing the ways of how to use the obtained results for tailoring the magnetic properties of YIG-based materials for technological applications. |
| title | Room- and low-temperature magnetic parameters of Y$_3$AlFe$_4$O$_{12}$ garnets |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2410.05879 |