Effect of adding aluminum ion on the structural, optical, electrical and magnetic properties of terbium doped yttrium iron garnet nanoparticles films prepared by sol-gel method

Ftema W. Aldbea, Noor Baa`Yah Ibrahim, M. Yahya

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Tb0.8Y2.2AlyFe5-yO12 nanoparticle films with y = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared by a sol-gel method for potential use as a magnetic sensor and in magneto-optical applications. The films were deposited onto quartz substrate, followed by annealing at 900°C in air for 2 h. X-ray diffractometry results confirmed the formation of a pure garnet structure. The lattice parameter decreased with increasing Al3+ content due to the substitution of Al3+ ions with the larger Fe3+ ions. The grain size of the films decreased up to y = 0.6. This variation is discussed based on the stress on the grain surface. The films observed to be transparent between 76 and 92% in the visible and infrared regions. The films demonstrated a strong absorption of 104 cm-1 caused by the charge transfer transition in the UV region. The absorption edge shifts to lower wavelengths at higher Al contents of 0.8 and 1 due to electronic transitions. The conductivity of films increased with increasing of Al content due to the increasing in free carrier concentration. The saturation magnetization at room temperature decreased with increasing Al3+ content, whereas the coercivity increased markedly at y = 0.6.

Original languageEnglish
Pages (from-to)150-157
Number of pages8
JournalApplied Surface Science
Volume321
DOIs
Publication statusPublished - 1 Dec 2014

Fingerprint

Terbium
Yttrium
Garnets
Aluminum
Sol-gel process
Structural properties
Magnetic properties
Electric properties
Iron
Optical properties
Ions
Nanoparticles
Magnetic sensors
Quartz
Saturation magnetization
Coercive force
Heavy ions
X ray diffraction analysis
Lattice constants
Carrier concentration

Keywords

  • Films
  • Garnet
  • Magnetization
  • Sol-gel
  • Spin coating

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

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title = "Effect of adding aluminum ion on the structural, optical, electrical and magnetic properties of terbium doped yttrium iron garnet nanoparticles films prepared by sol-gel method",
abstract = "Tb0.8Y2.2AlyFe5-yO12 nanoparticle films with y = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared by a sol-gel method for potential use as a magnetic sensor and in magneto-optical applications. The films were deposited onto quartz substrate, followed by annealing at 900°C in air for 2 h. X-ray diffractometry results confirmed the formation of a pure garnet structure. The lattice parameter decreased with increasing Al3+ content due to the substitution of Al3+ ions with the larger Fe3+ ions. The grain size of the films decreased up to y = 0.6. This variation is discussed based on the stress on the grain surface. The films observed to be transparent between 76 and 92{\%} in the visible and infrared regions. The films demonstrated a strong absorption of 104 cm-1 caused by the charge transfer transition in the UV region. The absorption edge shifts to lower wavelengths at higher Al contents of 0.8 and 1 due to electronic transitions. The conductivity of films increased with increasing of Al content due to the increasing in free carrier concentration. The saturation magnetization at room temperature decreased with increasing Al3+ content, whereas the coercivity increased markedly at y = 0.6.",
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author = "Aldbea, {Ftema W.} and Ibrahim, {Noor Baa`Yah} and M. Yahya",
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T1 - Effect of adding aluminum ion on the structural, optical, electrical and magnetic properties of terbium doped yttrium iron garnet nanoparticles films prepared by sol-gel method

AU - Aldbea, Ftema W.

AU - Ibrahim, Noor Baa`Yah

AU - Yahya, M.

PY - 2014/12/1

Y1 - 2014/12/1

N2 - Tb0.8Y2.2AlyFe5-yO12 nanoparticle films with y = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared by a sol-gel method for potential use as a magnetic sensor and in magneto-optical applications. The films were deposited onto quartz substrate, followed by annealing at 900°C in air for 2 h. X-ray diffractometry results confirmed the formation of a pure garnet structure. The lattice parameter decreased with increasing Al3+ content due to the substitution of Al3+ ions with the larger Fe3+ ions. The grain size of the films decreased up to y = 0.6. This variation is discussed based on the stress on the grain surface. The films observed to be transparent between 76 and 92% in the visible and infrared regions. The films demonstrated a strong absorption of 104 cm-1 caused by the charge transfer transition in the UV region. The absorption edge shifts to lower wavelengths at higher Al contents of 0.8 and 1 due to electronic transitions. The conductivity of films increased with increasing of Al content due to the increasing in free carrier concentration. The saturation magnetization at room temperature decreased with increasing Al3+ content, whereas the coercivity increased markedly at y = 0.6.

AB - Tb0.8Y2.2AlyFe5-yO12 nanoparticle films with y = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared by a sol-gel method for potential use as a magnetic sensor and in magneto-optical applications. The films were deposited onto quartz substrate, followed by annealing at 900°C in air for 2 h. X-ray diffractometry results confirmed the formation of a pure garnet structure. The lattice parameter decreased with increasing Al3+ content due to the substitution of Al3+ ions with the larger Fe3+ ions. The grain size of the films decreased up to y = 0.6. This variation is discussed based on the stress on the grain surface. The films observed to be transparent between 76 and 92% in the visible and infrared regions. The films demonstrated a strong absorption of 104 cm-1 caused by the charge transfer transition in the UV region. The absorption edge shifts to lower wavelengths at higher Al contents of 0.8 and 1 due to electronic transitions. The conductivity of films increased with increasing of Al content due to the increasing in free carrier concentration. The saturation magnetization at room temperature decreased with increasing Al3+ content, whereas the coercivity increased markedly at y = 0.6.

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