Structural, optical and magnetic properties of YIG and TbErIG nanofilms prepared using a sol-gel method

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

Research output: Contribution to journalArticle

Abstract

A series of yttrium iron garnet (YIG) and terbium erbium iron garnet (TbErIG) nanocrystalline films was successfully grown using a sol-gel method. A crystalline analysis carried out using an X-ray diffractometer confirmed that all films had a single-phase garnet structure. The TbErIG films annealed in O2 and Ar gas had a larger number of crystallisation peaks, with a lattice constant that was close to the standard value for ErIG. The transparency increased from 94% for YIG (O2) to 98% for TbErIG (O2) films in the near-infrared region. All films were soft ferrite materials, as indicated by their magnetic hysteresis loops. The value of saturated magnetisation was increased for samples annealed in air, and was markedly decreased for samples subjected to O2 and Ar atmospheres. An increase in the coercivity value (91 Oe) was also observed for the TbErIG (Ar) film. YIG and TbErIG showed a phase transition from ferrimagnetic to paramagnetic at the Curie temperature, Tc = 556 K and 557.3 K, respectively. The low saturation magnetisation, low optical absorption and highly crystalline structure of TbErIG (O2 and Ar) films mean that these films may potentially be used in a magneto-optical compact isolator in the visible and NIR regions.

Original languageEnglish
Pages (from-to)66-76
Number of pages11
JournalMaterials Research Bulletin
Volume112
DOIs
Publication statusPublished - 1 Apr 2019

Fingerprint

Terbium
Erbium
Yttrium
terbium
yttrium-iron garnet
Garnets
garnets
erbium
Sol-gel process
Structural properties
Magnetic properties
Iron
Optical properties
gels
magnetic properties
optical properties
iron
magnetization
isolators
Crystalline materials

Keywords

  • Magnetic properties
  • Nanostructures
  • Optical properties
  • Sol-gel
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Structural, optical and magnetic properties of YIG and TbErIG nanofilms prepared using a sol-gel method. / Elhamali, Suleiman M.; Ibrahim, Noor Baa`Yah; Radiman, Shahidan.

In: Materials Research Bulletin, Vol. 112, 01.04.2019, p. 66-76.

Research output: Contribution to journalArticle

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