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Selected properties of surface modified GaxFe3-xO4 with 0≤x≤1.5.
- Source :
-
Phase Transitions . Feb2023, Vol. 96 Issue 2, p97-104. 8p. - Publication Year :
- 2023
-
Abstract
- The influence of the surface modification on the magnetism of 4–14 nm sized core and core/shell gallium ferrites obtained by different preparation methods (Massart's and thermal decomposition from acetylacetonates) was studied. The physical properties of GaxFe3-xO4 were investigated in a wide range of Ga admixtures 0 ≤ x ≤ 1.5. Ga ions location at 8a or/and 16d positions of a spinel structure depends on the synthesis method and has a pronounced effect on the superparamagnetic properties of nanoparticles. Magnetization and Mössbauer experiments show the dominant superparamagnetic contribution for the nanoparticles with x > 0.8 with the blocking temperature TB significantly below 200 K. Surface-modified nanoferrites disclosed spontaneous magnetization that does not exceed 60 emu/g. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01411594
- Volume :
- 96
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Phase Transitions
- Publication Type :
- Academic Journal
- Accession number :
- 163051329
- Full Text :
- https://doi.org/10.1080/01411594.2022.2159406