Back to Search
Start Over
Temperature stability of magnetic permeability of NixFe3−xO4 ferrites.
- Source :
-
Applied Physics A: Materials Science & Processing . Apr2021, Vol. 127 Issue 4, p1-7. 7p. 1 Black and White Photograph, 1 Chart, 3 Graphs. - Publication Year :
- 2021
-
Abstract
- NixFe3−xO4 ferrites (x = 0.6, 0.7, 0.8, 0.9, 1.0) were prepared by solid-phase reaction method. Structure and morphology were characterized by X-ray diffractometer (XRD) and scanning electron microscope (SEM). Magnetic properties were measured with B-H analyzer and magnetic properties measurement system (MPMS). NixFe3−xO4 ferrites with high Ni2+ content (x = 0.7 ~ 1.0) present pure cubic spinel phase and dense microstructure. Their saturation magnetization (Ms) and initial permeability (μi) decrease with x increasing. Temperature coefficient (αμ) and specific temperature coefficient (β) were calculated based on the permeability from -60 °C to 100 °C. The results show both of αμ and β decrease with x decreasing, indicating that proper reduction of Ni2+ content and increasing Fe2+ content help to improve the temperature stability of NixFe3-xO4. This improvement in temperature stability is attributed to the influence of Fe2+ in the ferrites on the magnetocrystalline anisotropy. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09478396
- Volume :
- 127
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Applied Physics A: Materials Science & Processing
- Publication Type :
- Academic Journal
- Accession number :
- 149866479
- Full Text :
- https://doi.org/10.1007/s00339-021-04403-1