Abstract
Impurity 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-4 +(d(0)) ion is substituted by Fe3+ ion forming FeO6 octahedral complex with an iron-oxygen-vacancy (Fe3+- V-O). In such a metal-ligand complex, a giant g-factor of g(parallel to F) = 5.51 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 (Fe3+- V-O), are interactively sensitive to asymmetry in the octahedral rotational parameter Phi in SrTiO3 .
| Original language | English |
|---|---|
| Article number | 295805 |
| Number of pages | 6 |
| Journal | Journal of Physics-Condensed Matter |
| Volume | 30 |
| Issue number | 29 |
| DOIs | |
| Publication status | Published - 25 Jul 2018 |
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Rigorous ESR spectroscopy of Fe3+ impurity ion with oxygen vacancy in ferroelectric SrTiO3 crystal at 20 mK. / Hosain, M. A.; Le Floch, J-M; Krupka, J.; Tobar, M. E.
In: Journal of Physics-Condensed Matter, Vol. 30, No. 29, 295805, 25.07.2018.Research output: Contribution to journal › Article
TY - JOUR
T1 - Rigorous ESR spectroscopy of Fe3+ impurity ion with oxygen vacancy in ferroelectric SrTiO3 crystal at 20 mK
AU - Hosain, M. A.
AU - Le Floch, J-M
AU - Krupka, J.
AU - Tobar, M. E.
PY - 2018/7/25
Y1 - 2018/7/25
N2 - Impurity 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-4 +(d(0)) ion is substituted by Fe3+ ion forming FeO6 octahedral complex with an iron-oxygen-vacancy (Fe3+- V-O). In such a metal-ligand complex, a giant g-factor of g(parallel to F) = 5.51 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 (Fe3+- V-O), are interactively sensitive to asymmetry in the octahedral rotational parameter Phi in SrTiO3 .
AB - Impurity 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-4 +(d(0)) ion is substituted by Fe3+ ion forming FeO6 octahedral complex with an iron-oxygen-vacancy (Fe3+- V-O). In such a metal-ligand complex, a giant g-factor of g(parallel to F) = 5.51 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 (Fe3+- V-O), are interactively sensitive to asymmetry in the octahedral rotational parameter Phi in SrTiO3 .
KW - ferroelectric anisotropy
KW - electron spin resonance
KW - ion center symmetry
KW - quantum-hybrid system
KW - spin-Hamilton parameters
KW - impurity paramagnetic ions
KW - iron-oxygen vacancy
KW - DIELECTRIC RESONATORS
KW - EPR SPECTROSCOPY
KW - TEMPERATURE
KW - PARAMETERS
KW - COMPLEXES
KW - SRLAALO4
KW - SYSTEMS
KW - FIELD
U2 - 10.1088/1361-648X/aaco05
DO - 10.1088/1361-648X/aaco05
M3 - Article
VL - 30
JO - JOURNAL OF PHYSICS : CONDENSED MATTER
JF - JOURNAL OF PHYSICS : CONDENSED MATTER
SN - 0953-8984
IS - 29
M1 - 295805
ER -