Self-trapped holes in LiBaF3 crystals

I. Tale; M. Springis; U. Rogulis; V. Ogorodnik; P. Kulis; V. Tale; A. Veispals; H. J. Fitting

doi:10.1080/10420150108214091

Self-trapped holes in LiBaF₃ crystals

I. Tale^*
, M. Springis
, U. Rogulis
, V. Ogorodnik
, P. Kulis
, V. Tale
, A. Veispals
, H. J. Fitting

^*Corresponding author for this work

University of Latvia
University of Rostock

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

6 Citations (Scopus)

Abstract

Self-trapped holes (V_K-centres) in x-irradiated LiBaF₃ crystals were investigated by electron paramagnetic resonance (EPR), recombination afterglow and thermostimulated luminescence (TSL). After x-irradiation at 77K, an EPR of the self-trapped hole centre V_K (F₂^-) oriented along the [110] axis is identified. The ¹⁹F hyperfine interaction parameters of V_K-centres estimated from EPR angular dependencies are: A_II = 2520 MHz; A_⊥ = 200 MHz; the g-tensor parameters are: g_II = 2.002 and g_⊥ = 2.024. X-irradiation at temperatures below 200K results in a creation of a long-term temperature-independent afterglow-tunnelling luminescence (TL), with main emission bands at ∼4.1 eV and ∼3.15 eV. The short wavelength TL bands are associated with the tunnelling recombination of the electron centre with the V_K-centre, with thermal stability estimated to be about 130K.

Original language	English
Pages (from-to)	51-54
Number of pages	4
Journal	Radiation Effects and Defects in Solids
Volume	155
Issue number	1-4
DOIs	https://doi.org/10.1080/10420150108214091
Publication status	Published - 2001

Keywords

EPR
LiBaF
Recombination luminescence
Self-trapped holes

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10.1080/10420150108214091

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@article{54dd9cdb71394592ae18d32f4dea938f,

title = "Self-trapped holes in LiBaF3 crystals",

abstract = "Self-trapped holes (VK-centres) in x-irradiated LiBaF3 crystals were investigated by electron paramagnetic resonance (EPR), recombination afterglow and thermostimulated luminescence (TSL). After x-irradiation at 77K, an EPR of the self-trapped hole centre VK (F2-) oriented along the [110] axis is identified. The 19F hyperfine interaction parameters of VK-centres estimated from EPR angular dependencies are: AII = 2520 MHz; A⊥ = 200 MHz; the g-tensor parameters are: gII = 2.002 and g⊥ = 2.024. X-irradiation at temperatures below 200K results in a creation of a long-term temperature-independent afterglow-tunnelling luminescence (TL), with main emission bands at ∼4.1 eV and ∼3.15 eV. The short wavelength TL bands are associated with the tunnelling recombination of the electron centre with the VK-centre, with thermal stability estimated to be about 130K.",

keywords = "EPR, LiBaF, Recombination luminescence, Self-trapped holes",

author = "I. Tale and M. Springis and U. Rogulis and V. Ogorodnik and P. Kulis and V. Tale and A. Veispals and Fitting, \{H. J.\}",

year = "2001",

doi = "10.1080/10420150108214091",

language = "English",

volume = "155",

pages = "51--54",

journal = "Radiation Effects and Defects in Solids",

issn = "1042-0150",

publisher = "Taylor and Francis Ltd.",

number = "1-4",

}

TY - JOUR

T1 - Self-trapped holes in LiBaF3 crystals

AU - Tale, I.

AU - Springis, M.

AU - Rogulis, U.

AU - Ogorodnik, V.

AU - Kulis, P.

AU - Tale, V.

AU - Veispals, A.

AU - Fitting, H. J.

PY - 2001

Y1 - 2001

N2 - Self-trapped holes (VK-centres) in x-irradiated LiBaF3 crystals were investigated by electron paramagnetic resonance (EPR), recombination afterglow and thermostimulated luminescence (TSL). After x-irradiation at 77K, an EPR of the self-trapped hole centre VK (F2-) oriented along the [110] axis is identified. The 19F hyperfine interaction parameters of VK-centres estimated from EPR angular dependencies are: AII = 2520 MHz; A⊥ = 200 MHz; the g-tensor parameters are: gII = 2.002 and g⊥ = 2.024. X-irradiation at temperatures below 200K results in a creation of a long-term temperature-independent afterglow-tunnelling luminescence (TL), with main emission bands at ∼4.1 eV and ∼3.15 eV. The short wavelength TL bands are associated with the tunnelling recombination of the electron centre with the VK-centre, with thermal stability estimated to be about 130K.

AB - Self-trapped holes (VK-centres) in x-irradiated LiBaF3 crystals were investigated by electron paramagnetic resonance (EPR), recombination afterglow and thermostimulated luminescence (TSL). After x-irradiation at 77K, an EPR of the self-trapped hole centre VK (F2-) oriented along the [110] axis is identified. The 19F hyperfine interaction parameters of VK-centres estimated from EPR angular dependencies are: AII = 2520 MHz; A⊥ = 200 MHz; the g-tensor parameters are: gII = 2.002 and g⊥ = 2.024. X-irradiation at temperatures below 200K results in a creation of a long-term temperature-independent afterglow-tunnelling luminescence (TL), with main emission bands at ∼4.1 eV and ∼3.15 eV. The short wavelength TL bands are associated with the tunnelling recombination of the electron centre with the VK-centre, with thermal stability estimated to be about 130K.

KW - EPR

KW - LiBaF

KW - Recombination luminescence

KW - Self-trapped holes

UR - https://www.scopus.com/pages/publications/0344130976

U2 - 10.1080/10420150108214091

DO - 10.1080/10420150108214091

M3 - Article

AN - SCOPUS:0344130976

SN - 1042-0150

VL - 155

SP - 51

EP - 54

JO - Radiation Effects and Defects in Solids

JF - Radiation Effects and Defects in Solids

IS - 1-4

ER -

Self-trapped holes in LiBaF₃ crystals

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Keywords

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