Structural and magnetic properties of Tb xY 3-xFe 5O 12 (0 ≤ x ≤ 0.8) thin film prepared via sol-gel method

Ftema W. Aldbea, Noor Baa`Yah Ibrahim, Mustaffa Hj Abdullah, Ramadan E. Shaiboub

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Terbium-doped yttrium iron garnet (Tb xY 3-x Fe 5O 12; x = 0.0, 0.2, 0.4, 0.6 and 0.8) nanoparticles thin films have been prepared onto quartz substrate by sol-gel method followed by spin coating process. Annealing of the films was processed at 900 °C in air for 2 h. The structures were investigated by using an X-ray diffractometer (XRD) and a field emission scanning electron microscope (FE-SEM). The magnetic properties were studied by a vibrating sample magnetometer (VSM). The XRD patterns of the films were consistent with a single phase garnet structure. The lattice parameter was initially increased with Tb 3+ concentration due to the larger size of the Tb 3+ ion compared to Y 3+ ion, but a decrease in lattice parameter was observed at higher Tb 3+ concentration due to the effect of film's thickness. FE-SEM micrographs reveal that the particles were highly agglomerated. The grain's sizes for all films were in the range of 40-59 nm. The magnetic measurements at room temperature (25 °C) show that the saturation magnetization (Ms) of the films was reduced with the increase in Tb 3+ ions, which due to the antiparallel alignment between Tb 3+ ions and Fe 3+ ions. The films illustrate normal shapes of hysteresis loops except Tb 0.2Y 2.8Fe 5O 12 and Tb 0.4Y 2.6Fe 5O 12 films exhibiting two steps increments before being saturated. The coercivity values (Hc) demonstrate non linear dependency with the terbium concentration (x).

Original languageEnglish
Pages (from-to)483-489
Number of pages7
JournalJournal of Sol-Gel Science and Technology
Volume62
Issue number3
DOIs
Publication statusPublished - Jun 2012

Fingerprint

Sol-gel process
Structural properties
Magnetic properties
gels
magnetic properties
Thin films
Ions
thin films
Terbium
terbium
Garnets
Diffractometers
ions
diffractometers
Field emission
Lattice constants
field emission
lattice parameters
Electron microscopes
electron microscopes

Keywords

  • Garnet
  • Magnetic Properties
  • Sol-gel
  • Spin coating

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Biomaterials
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

Structural and magnetic properties of Tb xY 3-xFe 5O 12 (0 ≤ x ≤ 0.8) thin film prepared via sol-gel method. / Aldbea, Ftema W.; Ibrahim, Noor Baa`Yah; Abdullah, Mustaffa Hj; Shaiboub, Ramadan E.

In: Journal of Sol-Gel Science and Technology, Vol. 62, No. 3, 06.2012, p. 483-489.

Research output: Contribution to journalArticle

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