Effect of Er3+ ions on structure, surface morphology, optical and magnetic properties of Tb-YIG nanocrystalline films

Suleiman M. Elhamali, Noor Baa`Yah Ibrahim, Shahidan Radiman

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Nanocrystalline Y2.8-xTb0.2 Erx Fe5 O12, (x = 0.0–2.6) films are successfully prepared under an annealed temperature of 900 °C in ambient oxygen using a sol-gel method. Structural investigations, using an X-ray diffractometer, confirmed that all films have a crystallographic cubic phase of pure garnet. An increment of lattice constant was observed at lower concentrations (x ≤ 0.8), which then linearly decreased with higher concentrations; thus indicating a complete incorporation of Er+3 ions into the Tb: YIG structure. The surface morphology, obtained using field emission scanning electron microscopy and atomic force microscopy, showed a grain size nanostructure formation, a good adhesion of the film to the quartz substrate, and a smooth surface roughness. All samples showed high transparency in visible and near-infrared regions, with absorption edges below 500 nm. Vibrating sample magnetometer results at 29 °C revealed a formation of a soft ferrimagnetic material. Adding Er+3 ions reduced the saturation magnetization, Ms but, remarkably, increased the magnetic coercivity Hc. Based on a low absorption coefficient and saturation magnetization, the obtained films are a promising material for magneto-optical devices, such as optical isolators in visible and near-infrared regions.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalMaterials Chemistry and Physics
Volume208
DOIs
Publication statusPublished - 1 Apr 2018

Fingerprint

yttrium-iron garnet
Surface morphology
Magnetic properties
Optical properties
Ions
magnetic properties
optical properties
Saturation magnetization
Magnetooptical devices
Ferrimagnetic materials
ions
ferrimagnetic materials
Infrared radiation
saturation
magnetization
Quartz
isolators
Garnets
Diffractometers
Magnetometers

Keywords

  • Magnetic materials
  • Sol-gel preparation
  • Surface morphology

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Effect of Er3+ ions on structure, surface morphology, optical and magnetic properties of Tb-YIG nanocrystalline films. / Elhamali, Suleiman M.; Ibrahim, Noor Baa`Yah; Radiman, Shahidan.

In: Materials Chemistry and Physics, Vol. 208, 01.04.2018, p. 1-7.

Research output: Contribution to journalArticle

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