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<p>In this study, we prepared undoped and yttrium (Y)-doped gadolinium–iron–garnet(GIG) nanostructures by the auto-combustion sol–gel method. Structural, morphological and composition studies were carried out using X-ray diffraction (XRD), field emission electron scanning microscope (FESEM) and high resolution transmission electron microscope (TEM) techniques. X-ray diffraction has shown that the samples are polycrystalline and garnet-cubic-spinel crystal structure. The average crystallite is found to be in the range 21–23&#xa0;nm. XRD analysis demonstrated that the lattice constant and X-ray density of GIG sample was increased with increasing Y doping. The significant impact of Y on hopping lengths of Gadolinium–iron–garnet (GIG) nano-particles was investigated. FESEM images show micro grain and nanostructure formation with size lies between 60 and 80&#xa0;nm. TG–DTA measurements show endothermic peak were observed at 70&#xa0;°C. The VSM results demonstrate that compared to the undoped Gd<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> sample, Y-doped Gd<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> samples show higher saturation magnetization at room temperature. Analysis of the magnetic data confirmed that spin canting in the substituted garnets plays an important role in advanced magnetic storage device applications.</p>

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Structural, morphological, and magnetic properties of yttrium-doped gadolinium–iron garnet (GIG) nano-particles for soft magnetic applications

  • 期刊论文

  • 发表日期：

    2025年6月28日

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  • S. S. Jadhav,
  • A. V. Fulari,
  • R. B. Borade,
  • S. B. Kadam,
  • M. B. Awale,
  • V. D. Mote,
  • A. B. Kadam

摘要

In this study, we prepared undoped and yttrium (Y)-doped gadolinium–iron–garnet(GIG) nanostructures by the auto-combustion sol–gel method. Structural, morphological and composition studies were carried out using X-ray diffraction (XRD), field emission electron scanning microscope (FESEM) and high resolution transmission electron microscope (TEM) techniques. X-ray diffraction has shown that the samples are polycrystalline and garnet-cubic-spinel crystal structure. The average crystallite is found to be in the range 21–23 nm. XRD analysis demonstrated that the lattice constant and X-ray density of GIG sample was increased with increasing Y doping. The significant impact of Y on hopping lengths of Gadolinium–iron–garnet (GIG) nano-particles was investigated. FESEM images show micro grain and nanostructure formation with size lies between 60 and 80 nm. TG–DTA measurements show endothermic peak were observed at 70 °C. The VSM results demonstrate that compared to the undoped Gd3Fe5O12 sample, Y-doped Gd3Fe5O12 samples show higher saturation magnetization at room temperature. Analysis of the magnetic data confirmed that spin canting in the substituted garnets plays an important role in advanced magnetic storage device applications.