Rigorous ESR spectroscopy of Fe3+ impurity ion with oxygen vacancy in ferroelectric SrTiO3 crystal at 20 mK

M. A. Hosain, J-M Le Floch, J. Krupka, M. E. Tobar

Research output: Contribution to journalArticle

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 languageEnglish
Article number295805
Number of pages6
JournalJournal of Physics-Condensed Matter
Volume30
Issue number29
DOIs
Publication statusPublished - 25 Jul 2018

Cite this

@article{e978d6a95aa14f6ba8e64cdca0686ea1,
title = "Rigorous ESR spectroscopy of Fe3+ impurity ion with oxygen vacancy in ferroelectric SrTiO3 crystal at 20 mK",
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 .",
keywords = "ferroelectric anisotropy, electron spin resonance, ion center symmetry, quantum-hybrid system, spin-Hamilton parameters, impurity paramagnetic ions, iron-oxygen vacancy, DIELECTRIC RESONATORS, EPR SPECTROSCOPY, TEMPERATURE, PARAMETERS, COMPLEXES, SRLAALO4, SYSTEMS, FIELD",
author = "Hosain, {M. A.} and {Le Floch}, J-M and J. Krupka and Tobar, {M. E.}",
year = "2018",
month = "7",
day = "25",
doi = "10.1088/1361-648X/aaco05",
language = "English",
volume = "30",
journal = "JOURNAL OF PHYSICS : CONDENSED MATTER",
issn = "0953-8984",
publisher = "IOP Publishing",
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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 journalArticle

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 -