Effect of Annealing temperature on the Structural and Magnetic Properties of Tb_xY_3-xFe₅O₁₂(x = 0.0, 1.0, 2.0) Thin Films Prepared by Sol-Gel Process

Abstract:

Thin films nanoparticles TbxY3-xFe5O12 (x=0.0, 1.0, 2.0) were prepared by the sol-gel process followed by annealing process at various annealing temperatures of 700° C, 800° C and 900° C in air for 2 h. The results obtained from X-ray diffractometer (XRD) show that the films annealed below 900°C exhibit peaks of garnet mixed with small amounts of YFeO3 and Fe2O3. Pure garnet phase has been detected in the films annealed at 900°C. Before annealing the films show amorphous structures. The particles sizes measurement using the field emission scanning electron microscope (FE-SEM) showed that the particles sizes increased as the annealing temperature increased. The magnetic properties were measured at room temperature using the vibrating sample magnetometer (VSM). The saturation magnetization (M_s) of the films also increased with the annealing temperature. However, different behavior of coercivity (H_c) has been observed as the annealing temperature was increased.

• Periodical: Advanced Materials Research (Volume 501)
• Pages: 236-241
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.501.236
• Online since: April 2012
• Authors: Ftema W. Aldbea, Noor Bahyah Ibrahim, Mustafa Hj. Abdullah, Ramadan E. Shaiboub
• Keywords: Garnet, Magnetic Property, Sol-Gel (SG), Spin Coating

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