Cation vacancies in ferroelectric PbTiO3 and Pb(Zr,Ti)O-3: A positron annihilation lifetime spectroscopy study

D. J.  Keeble; S. Singh; R. A. Mackie; M. Morozov; S. McGuire; D. Damjanovic

doi:10.1103/PhysRevB.76.144109

Cation vacancies in ferroelectric PbTiO3 and Pb(Zr,Ti)O-3: A positron annihilation lifetime spectroscopy study

D. J. Keeble, S. Singh, R. A. Mackie, M. Morozov, S. McGuire, D. Damjanovic

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

50 Citations (Scopus)

Abstract

Positron annihilation lifetime spectroscopy measurements identify A- and B-site cation vacancies in ferroelectric perovskite oxides (ABO(3)). Crystal PbTiO3 and ceramic lead zirconium titanate (PZT) were studied and gave consistent values for the lifetime resulting from positron localization at lead vacancies V-Pb. Positron trapping to B-site vacancies was inferred in PZT. Temperature dependent studies showed that the defect specific trapping rate was higher for V-B compared to V-Pb, consistent with the larger negative charge. Doping PZT with Fe increased the fraction positron trapping to V-B compared to V-Pb-type defects.

Original language	English
Article number	144109
Pages (from-to)	-
Number of pages	5
Journal	Physical Review B: Condensed matter and materials physics
Volume	76
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.76.144109
Publication status	Published - 2007

Keywords

Positron
Positron annihilation
Ferroelectrics

Access to Document

10.1103/PhysRevB.76.144109

Cite this

@article{4dcffc2c5530439a8a406fc1112d3069,

title = "Cation vacancies in ferroelectric PbTiO3 and Pb(Zr,Ti)O-3: A positron annihilation lifetime spectroscopy study",

abstract = "Positron annihilation lifetime spectroscopy measurements identify A- and B-site cation vacancies in ferroelectric perovskite oxides (ABO(3)). Crystal PbTiO3 and ceramic lead zirconium titanate (PZT) were studied and gave consistent values for the lifetime resulting from positron localization at lead vacancies V-Pb. Positron trapping to B-site vacancies was inferred in PZT. Temperature dependent studies showed that the defect specific trapping rate was higher for V-B compared to V-Pb, consistent with the larger negative charge. Doping PZT with Fe increased the fraction positron trapping to V-B compared to V-Pb-type defects.",

keywords = "Positron, Positron annihilation, Ferroelectrics",

author = "Keeble, {D. J.} and S. Singh and Mackie, {R. A.} and M. Morozov and S. McGuire and D. Damjanovic",

year = "2007",

doi = "10.1103/PhysRevB.76.144109",

language = "English",

volume = "76",

pages = "--",

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

issn = "1098-0121",

publisher = "American Physical Society",

number = "14",

}

TY - JOUR

T1 - Cation vacancies in ferroelectric PbTiO3 and Pb(Zr,Ti)O-3

T2 - A positron annihilation lifetime spectroscopy study

AU - Keeble, D. J.

AU - Singh, S.

AU - Mackie, R. A.

AU - Morozov, M.

AU - McGuire, S.

AU - Damjanovic, D.

PY - 2007

Y1 - 2007

N2 - Positron annihilation lifetime spectroscopy measurements identify A- and B-site cation vacancies in ferroelectric perovskite oxides (ABO(3)). Crystal PbTiO3 and ceramic lead zirconium titanate (PZT) were studied and gave consistent values for the lifetime resulting from positron localization at lead vacancies V-Pb. Positron trapping to B-site vacancies was inferred in PZT. Temperature dependent studies showed that the defect specific trapping rate was higher for V-B compared to V-Pb, consistent with the larger negative charge. Doping PZT with Fe increased the fraction positron trapping to V-B compared to V-Pb-type defects.

AB - Positron annihilation lifetime spectroscopy measurements identify A- and B-site cation vacancies in ferroelectric perovskite oxides (ABO(3)). Crystal PbTiO3 and ceramic lead zirconium titanate (PZT) were studied and gave consistent values for the lifetime resulting from positron localization at lead vacancies V-Pb. Positron trapping to B-site vacancies was inferred in PZT. Temperature dependent studies showed that the defect specific trapping rate was higher for V-B compared to V-Pb, consistent with the larger negative charge. Doping PZT with Fe increased the fraction positron trapping to V-B compared to V-Pb-type defects.

KW - Positron

KW - Positron annihilation

KW - Ferroelectrics

U2 - 10.1103/PhysRevB.76.144109

DO - 10.1103/PhysRevB.76.144109

M3 - Article

SN - 1098-0121

VL - 76

SP - -

JO - Physical Review B: Condensed matter and materials physics

JF - Physical Review B: Condensed matter and materials physics

IS - 14

M1 - 144109

ER -

Cation vacancies in ferroelectric PbTiO3 and Pb(Zr,Ti)O-3: A positron annihilation lifetime spectroscopy study

Abstract

Keywords

Access to Document

Fingerprint

Cite this