Rigorous ESR spectroscopy of Fe3+impurity ion with oxygen vacancy in ferroelectric SrTiO3crystal at 20 mK
M.A. Hosain , J-M Le Floch , Jerzy Krupka , Michael E. Tobar
AbstractImpurity Fe3+ ion electron spin resonance (ESR) spectroscopy using multiple dielectric modes in a SrTiO3 dielectric resonator has been performed with a tunable DC magnetic field of up to 1.6 T. The Ti ion is substituted by Fe3+ ion forming FeO6 octahedral complex with an iron-oxygen-vacancy (Fe). In such a metal-ligand complex, a giant g-factor of was observed in the ferroelectric phase at 20 mK. The change of Fe3+ ion center-symmetry in the FeO6 complex as a soft-mode characteristics of ferroelectric phase transition and the influences of iron-oxygen-vacancy (Fe), are interactively sensitive to asymmetry in the octahedral rotational parameter Φ in SrTiO3.
|Journal series||Journal of Physics-Condensed Matter, ISSN 0953-8984, [1361-648X], (A 30 pkt)|
|Score||= 30.0, 23-09-2019, ArticleFromJournal|
|Publication indicators||= 0; : 2017 = 0.921; : 2017 = 2.617 (2) - 2017=2.385 (5)|
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