Fe3+ defect dipole centers in ferroelectric PbTiO3 studied using electron paramagnetic resonance

D. J.  Keeble; M. Loyo-Menoyo; Z. I. Y. Booq; R. R.  Garipov; V. V. Eremkin; V. Smotrakov

doi:10.1103/PhysRevB.80.014101

Fe3+ defect dipole centers in ferroelectric PbTiO3 studied using electron paramagnetic resonance

D. J. Keeble
, M. Loyo-Menoyo
, Z. I. Y. Booq
, R. R. Garipov
, V. V. Eremkin
, V. Smotrakov

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Three Fe3+ centers with tetragonal symmetry and with the defect axis parallel to the polarization direction were detected in ferroelectric PbTiO3 crystals using electron paramagnetic resonance. All exhibit large zero-field splittings (ZFS). Two are assigned to Fe3+-oxygen vacancy dipole defect complexes, and the third to the isolated Fe3+ with distant charge compensation. The Fe3+-V-O defect with the largest ZFS converts to the second stable center on annealing; comparison of the cubic ZFS terms show the in-plane oxygen ligands relax outwards in stable center.

Original language	English
Article number	014101
Pages (from-to)	-
Number of pages	7
Journal	Physical Review B: Condensed matter and materials physics
Volume	80
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.80.014101
Publication status	Published - 2009

Keywords

annealing
charge compensation
crystal symmetry
dielectric polarisation
ferroelectric materials
hyperfine structure
lead compounds
paramagnetic resonance
vacancies (crystal)
S-STATE
ALIGNMENT
CRYSTALS
TITANATE
FATIGUE
STRAIN
OXIDES
EPR

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10.1103/PhysRevB.80.014101

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title = "Fe3+ defect dipole centers in ferroelectric PbTiO3 studied using electron paramagnetic resonance",

abstract = "Three Fe3+ centers with tetragonal symmetry and with the defect axis parallel to the polarization direction were detected in ferroelectric PbTiO3 crystals using electron paramagnetic resonance. All exhibit large zero-field splittings (ZFS). Two are assigned to Fe3+-oxygen vacancy dipole defect complexes, and the third to the isolated Fe3+ with distant charge compensation. The Fe3+-V-O defect with the largest ZFS converts to the second stable center on annealing; comparison of the cubic ZFS terms show the in-plane oxygen ligands relax outwards in stable center.",

keywords = "annealing, charge compensation, crystal symmetry, dielectric polarisation, ferroelectric materials, hyperfine structure, lead compounds, paramagnetic resonance, vacancies (crystal), S-STATE, ALIGNMENT, CRYSTALS, TITANATE, FATIGUE, STRAIN, OXIDES, EPR",

author = "Keeble, \{D. J.\} and M. Loyo-Menoyo and Booq, \{Z. I. Y.\} and Garipov, \{R. R.\} and Eremkin, \{V. V.\} and V. Smotrakov",

year = "2009",

doi = "10.1103/PhysRevB.80.014101",

language = "English",

volume = "80",

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journal = "Physical Review B: Condensed matter and materials physics",

issn = "1098-0121",

publisher = "American Physical Society",

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TY - JOUR

T1 - Fe3+ defect dipole centers in ferroelectric PbTiO3 studied using electron paramagnetic resonance

AU - Keeble, D. J.

AU - Loyo-Menoyo, M.

AU - Booq, Z. I. Y.

AU - Garipov, R. R.

AU - Eremkin, V. V.

AU - Smotrakov, V.

PY - 2009

Y1 - 2009

N2 - Three Fe3+ centers with tetragonal symmetry and with the defect axis parallel to the polarization direction were detected in ferroelectric PbTiO3 crystals using electron paramagnetic resonance. All exhibit large zero-field splittings (ZFS). Two are assigned to Fe3+-oxygen vacancy dipole defect complexes, and the third to the isolated Fe3+ with distant charge compensation. The Fe3+-V-O defect with the largest ZFS converts to the second stable center on annealing; comparison of the cubic ZFS terms show the in-plane oxygen ligands relax outwards in stable center.

AB - Three Fe3+ centers with tetragonal symmetry and with the defect axis parallel to the polarization direction were detected in ferroelectric PbTiO3 crystals using electron paramagnetic resonance. All exhibit large zero-field splittings (ZFS). Two are assigned to Fe3+-oxygen vacancy dipole defect complexes, and the third to the isolated Fe3+ with distant charge compensation. The Fe3+-V-O defect with the largest ZFS converts to the second stable center on annealing; comparison of the cubic ZFS terms show the in-plane oxygen ligands relax outwards in stable center.

KW - annealing

KW - charge compensation

KW - crystal symmetry

KW - dielectric polarisation

KW - ferroelectric materials

KW - hyperfine structure

KW - lead compounds

KW - paramagnetic resonance

KW - vacancies (crystal)

KW - S-STATE

KW - ALIGNMENT

KW - CRYSTALS

KW - TITANATE

KW - FATIGUE

KW - STRAIN

KW - OXIDES

KW - EPR

U2 - 10.1103/PhysRevB.80.014101

DO - 10.1103/PhysRevB.80.014101

M3 - Article

SN - 1098-0121

VL - 80

SP - -

JO - Physical Review B: Condensed matter and materials physics

JF - Physical Review B: Condensed matter and materials physics

IS - 1

M1 - 014101

ER -

Fe3+ defect dipole centers in ferroelectric PbTiO3 studied using electron paramagnetic resonance

Abstract

Keywords

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