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February 11, 2026AIP Advances1 citationsOpen Access

Influence of ytterbium-doping on the structural, magnetic and magnetodielectric properties of gallium ferrite nanoparticles

THT. C. HanNational University of Kaohsiung CLChun-Cheng LaiNational University of Kaohsiung YCYou-Wei ChenNational University of Kaohsiung

Key Points

To investigate how ytterbium-doping affects the structural, magnetic, and magnetodielectric properties of gallium ferrite nanoparticles.
Prepared Ga1−xYbxFeO3 nanoparticles via sol-gel method with varying Yb content (x = 0, 0.05, 0.10).
Analyzed structural properties using X-ray diffraction (XRD).
Measured magnetic properties including saturation magnetization and coercivity at different doping levels.
All samples exhibited an orthorhombic structure with increasing lattice parameters as Yb content increased.
Ga0.95Yb0.05FeO3 showed maximum saturation magnetization and coercivity due to distortion enhancement.
Yb-doping improved ferroelectric behavior and reduced leakage current density.

Abstract

In the present work, we have prepared a series of Ga1−xYbxFeO3 (x = 0, 0.05, 0.10) nanocrystalline samples by using a sol-gel method. The influence of Yb-doping at the Ga site on the structural, magnetic, and magnetodielectric (MD) properties of GaFeO3 nanoparticles was studied. The crystalline structural analysis of all samples using x-ray diffractometer (XRD), indicated all samples are orthorhombic structure with space group of Pc21n and the value of lattice parameters increase systematically with increasing Yb-content. All Ga1−xYbxFeO3 samples showed above room temperature ferrimagnetism. The values of saturation magnetization (MS) and coercivity (HC) exhibit a maximum at light doping sample of Ga0.95Yb0.05FeO3 due to the enhancement of the distortion. Moreover, the reduction is observed in leakage current density with the incorporation of Yb. It is also found that the simultaneous improvement of ferroelectric behavior and MD effect after Yb-doping. The results suggest that both ferrimagnetism and ferroelectricity of GaFeO3 can be optimized by Yb-doping.

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