| Autor: |
Hosain, M. A., Floch, J-M. Le, Krupka, J., Tobar, M. E. |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
J. Phys.: Condens. Matter 30 295805, 2018 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/1361-648X/aacc05 |
| Popis: |
Impurity $Fe^{3+}$ ion electron spin resonance (ESR) spectroscopy using multiple dielectric modes in a $SrTiO_3$ dielectric resonator has been performed with a tuneable DC magnetic field of up to $1.6~T$. The $Ti^{4+}(d^0)$ ion is substituted by $Fe^{3+}$ ion forming $FeO_6$ octahedral complex with an iron-oxygen-vacancy $(Fe^{3+}-V_O)$. In such a metal-ligand complex, a giant g-factor of $g_{\scriptscriptstyle\parallel F} = 5.51$ was observed in the ferroelectric phase at $20~mK$. The the change of $Fe^{3+}$ ion center-symmetry in the $FeO_6$ complex as a soft-mode characteristics of ferroelectric phase transition and the influences of iron-oxygen-vacancy $(Fe^{3+}-V_O)$, interactively sensitive to asymmetry in the octahedral rotational parameter $\Phi$ in $SrTi0_3$. |
| Databáze: |
arXiv |
| Externí odkaz: |
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