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Temperature variation of surface magnetization in antiferromagnetic six lines ferrihydrite nanoparticles.
- Source :
-
Journal of Magnetism & Magnetic Materials . Dec2023, Vol. 587, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Six lines ferrihydrite nanoparticles are synthesized following a chemical route. The sample is characterized using x-ray diffractometry, Fourier transform infrared spectroscopy, transmission electron microscopy and vibrating sample magnetometry. Average crystallite size is 5 nm. The sample exhibits superparamagnetic behavior. Magnetization versus magnetic field data in the superparamagnetic region are analyzed considering a distribution in particle size. Temperature dependence of saturation magnetization originating from surface spins and antiferromagnetic susceptibility of particle cores are studied. • Saturation magnetization decreases with increasing temperature. • Magnetization of antiferromagnetic particles is due to uncompensated surface spins. • Surface magnetization of crystals is expected to decrease linearly with temperature. • Temperature variation of saturation magnetization of six lines ferrihydrite is studied. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03048853
- Volume :
- 587
- Database :
- Academic Search Index
- Journal :
- Journal of Magnetism & Magnetic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 173155290
- Full Text :
- https://doi.org/10.1016/j.jmmm.2023.171341