Electronic Structure and Magnetic Properties of the Ni0.2Cd0.3Fe2.5-xAlxO4 (0≤x≤04) Ferrite Nanoparticles

Title
Electronic Structure and Magnetic Properties of the Ni0.2Cd0.3Fe2.5-xAlxO4 (0≤x≤04) Ferrite Nanoparticles
Authors
S. KumarK. M. Batoo가우탐B. K. KooAlimuddin채근화H. ChungC. G. Lee
Keywords
Ferrite Nanoparticles; XRD; DC Magnetization; TEM; NEXAFS
Issue Date
2011-01
Publisher
Journal of nanoscience and nanotechnology
Citation
VOL 11, NO 1, 396-401
Abstract
The structural, magnetic, and electronic structural properties of Ni0.2Cd0.3Fe2.5−xAlxO4 ferrite nanoparticles were studied via X-ray diffraction (XRD), transmission electron microscopy (TEM), DC magnetization, and near-edge X-ray absorption fine-structure spectroscopy (NEXAFS) measurements. Nanoparticles of Ni0.2Cd0.3Fe2.5−xAlxO4 (0 ≤ x ≤ 0.4) ferrite were synthesized using the sol-gel method. The XRD and TEM measurements showed that all the samples had a single-phase nature with a cubic structure, and had nanocrystalline behavior. From the XRD and TEM analysis, it was found that the particle size increases with Al doping. The DC magnetization measurements revealed that the blocking temperature increases with increased Al doping. It was observed that the magnetic moment decreases with Al doping, which may be due to the dilution of the sublattice by the doping of the Al ions. The NEXAFS measurements performed at room temperature indicated that Fe exists in a mixed-valence state.
URI
http://pubs.kist.re.kr/handle/201004/40792
ISSN
1533-4880
Appears in Collections:
KIST Publication > Article
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