Synthesis and optical properties of Tb 3+ or Dy 3+ -doped MgAl 2 O 4 transparent ceramics

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Abstract

MgAl 2 O 4 ceramics doped with rare earth ions (Tb 3+ and Dy 3+ ions) were fabricated by SPS technique. Optical properties and pulse cathodoluminescence (PCL) spectra were studied. The redshift effect of the absorption boundary for rare earth (RE) ions doped ceramics was shown. It was shown that cathodoluminescence spectra in nanosecond time range can be decomposed into several emission bands at 2.72, 3.01, 3.37, 3.63 eV caused by F-type centers. It has been demonstrated that the introduction of terbium and dysprosium ions practically does not change the intensity ratio of the bands at 2.72, 3.01, 3.37 eV, but leads to an increase in the band at 3.63 eV in nanosecond time range. There are emission bands related to intrinsic host defects, RE ions dopants (Dy 3+ , Tb 3+ ), and trace elements (Cr 3+ ions) in PCL spectra measured in millisecond time range. The dependences of kinetic characteristics of spinel ceramics were studied. In nanosecond time range, decay kinetics of the MAS ceramics is described by the sum of two exponentials with luminescence decay times are 30 ± 5 ns and 0.8 ± 0.1 μs In the millisecond time interval, the luminescence decay time depends on the dopant ions.

Original languageEnglish
Pages (from-to)396-400
Number of pages5
JournalOptical Materials
Volume91
DOIs
Publication statusPublished - 1 May 2019

Fingerprint

Optical properties
ceramics
Ions
optical properties
synthesis
Cathodoluminescence
cathodoluminescence
ions
Rare earths
rare earth elements
Luminescence
decay
Dysprosium
Terbium
Doping (additives)
luminescence
Kinetics
dysprosium
terbium
kinetics

Keywords

  • Decay kinetics
  • MgAl O (MAS) ceramics
  • Optical properties
  • Pulse cathodoluminescence (PLC)
  • Rare earth (RE) ions
  • Spark plasma sintering (SPS) technique

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

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title = "Synthesis and optical properties of Tb 3+ or Dy 3+ -doped MgAl 2 O 4 transparent ceramics",
abstract = "MgAl 2 O 4 ceramics doped with rare earth ions (Tb 3+ and Dy 3+ ions) were fabricated by SPS technique. Optical properties and pulse cathodoluminescence (PCL) spectra were studied. The redshift effect of the absorption boundary for rare earth (RE) ions doped ceramics was shown. It was shown that cathodoluminescence spectra in nanosecond time range can be decomposed into several emission bands at 2.72, 3.01, 3.37, 3.63 eV caused by F-type centers. It has been demonstrated that the introduction of terbium and dysprosium ions practically does not change the intensity ratio of the bands at 2.72, 3.01, 3.37 eV, but leads to an increase in the band at 3.63 eV in nanosecond time range. There are emission bands related to intrinsic host defects, RE ions dopants (Dy 3+ , Tb 3+ ), and trace elements (Cr 3+ ions) in PCL spectra measured in millisecond time range. The dependences of kinetic characteristics of spinel ceramics were studied. In nanosecond time range, decay kinetics of the MAS ceramics is described by the sum of two exponentials with luminescence decay times are 30 ± 5 ns and 0.8 ± 0.1 μs In the millisecond time interval, the luminescence decay time depends on the dopant ions.",
keywords = "Decay kinetics, MgAl O (MAS) ceramics, Optical properties, Pulse cathodoluminescence (PLC), Rare earth (RE) ions, Spark plasma sintering (SPS) technique",
author = "D. Valiev and S. Stepanov and O. Khasanov and E. Dvilis and E. Polisadova and V. Paygin",
year = "2019",
month = "5",
day = "1",
doi = "10.1016/j.optmat.2019.03.049",
language = "English",
volume = "91",
pages = "396--400",
journal = "Optical Materials",
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TY - JOUR

T1 - Synthesis and optical properties of Tb 3+ or Dy 3+ -doped MgAl 2 O 4 transparent ceramics

AU - Valiev, D.

AU - Stepanov, S.

AU - Khasanov, O.

AU - Dvilis, E.

AU - Polisadova, E.

AU - Paygin, V.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - MgAl 2 O 4 ceramics doped with rare earth ions (Tb 3+ and Dy 3+ ions) were fabricated by SPS technique. Optical properties and pulse cathodoluminescence (PCL) spectra were studied. The redshift effect of the absorption boundary for rare earth (RE) ions doped ceramics was shown. It was shown that cathodoluminescence spectra in nanosecond time range can be decomposed into several emission bands at 2.72, 3.01, 3.37, 3.63 eV caused by F-type centers. It has been demonstrated that the introduction of terbium and dysprosium ions practically does not change the intensity ratio of the bands at 2.72, 3.01, 3.37 eV, but leads to an increase in the band at 3.63 eV in nanosecond time range. There are emission bands related to intrinsic host defects, RE ions dopants (Dy 3+ , Tb 3+ ), and trace elements (Cr 3+ ions) in PCL spectra measured in millisecond time range. The dependences of kinetic characteristics of spinel ceramics were studied. In nanosecond time range, decay kinetics of the MAS ceramics is described by the sum of two exponentials with luminescence decay times are 30 ± 5 ns and 0.8 ± 0.1 μs In the millisecond time interval, the luminescence decay time depends on the dopant ions.

AB - MgAl 2 O 4 ceramics doped with rare earth ions (Tb 3+ and Dy 3+ ions) were fabricated by SPS technique. Optical properties and pulse cathodoluminescence (PCL) spectra were studied. The redshift effect of the absorption boundary for rare earth (RE) ions doped ceramics was shown. It was shown that cathodoluminescence spectra in nanosecond time range can be decomposed into several emission bands at 2.72, 3.01, 3.37, 3.63 eV caused by F-type centers. It has been demonstrated that the introduction of terbium and dysprosium ions practically does not change the intensity ratio of the bands at 2.72, 3.01, 3.37 eV, but leads to an increase in the band at 3.63 eV in nanosecond time range. There are emission bands related to intrinsic host defects, RE ions dopants (Dy 3+ , Tb 3+ ), and trace elements (Cr 3+ ions) in PCL spectra measured in millisecond time range. The dependences of kinetic characteristics of spinel ceramics were studied. In nanosecond time range, decay kinetics of the MAS ceramics is described by the sum of two exponentials with luminescence decay times are 30 ± 5 ns and 0.8 ± 0.1 μs In the millisecond time interval, the luminescence decay time depends on the dopant ions.

KW - Decay kinetics

KW - MgAl O (MAS) ceramics

KW - Optical properties

KW - Pulse cathodoluminescence (PLC)

KW - Rare earth (RE) ions

KW - Spark plasma sintering (SPS) technique

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