Abstract
Hydrothermal route was used in the preparation of Fe-doped CdO nanoparticles with 3, 5, 7 and 10 wt% and their structural and magnetic properties were investigated. Structural characterization using powder X-ray diffraction confirmed the single phase cubic symmetry of these nanoparticles. Particle size decreased monotonically with increasing the dopant ion concentration. The microstructure of the synthesized samples was studied by a high-resolution transmission electron microscopy (HRTEM) which confirmed the nanocrystalline nature of the samples. A vibrating sample magnetometer provided the hysteresis curves of all samples. Pure CdO reveals ferromagnetic behavior while antiferromagnetization is observed for all Fe-doped samples. Large coercivity as well as large area for the sample x = 0.05 is achieved.
Highlights
Diluted magnetic semiconductors (DMSs) are defined as nonmagnetic semiconductors in which a small fraction of host cations is replaced by transition metal (TM) or rareearth (RE) ions, with both spin and charge degrees of freedom in a single material (Ohno 1998; Pearton et al.2007)
Hydrothermal route was used in the preparation of Fe-doped CdO nanoparticles with 3, 5, 7 and 10 wt% and their structural and magnetic properties were investigated
The microstructure of the synthesized samples was studied by a high-resolution transmission electron microscopy (HRTEM) which confirmed the nanocrystalline nature of the samples
Summary
Diluted magnetic semiconductors (DMSs) are defined as nonmagnetic semiconductors in which a small fraction of host cations is replaced by transition metal (TM) or rareearth (RE) ions, with both spin and charge degrees of freedom in a single material (Ohno 1998; Pearton et al.2007). Abstract Hydrothermal route was used in the preparation of Fe-doped CdO nanoparticles with 3, 5, 7 and 10 wt% and their structural and magnetic properties were investigated. Iron has been recognized as one of the most efficient doping element to improve and tune the structural, electrical and magnetic properties of CdO nanoparticles due to its unique chemical stability.
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