Exchange-spring behavior in BaFe12O19-Ni0.5Zn0.5Fe2O4 nanocomposites synthesized by a combustion method
Source abstract
Abstract
Abstract Exchange-spring systems offer various technological applications. In this study, BaFe 12 O 19 -Ni 0.5 Zn 0.5 Fe 2 O 4 nanocomposite magnets with single-step hysteresis loops were synthesized through a simple combustion method. Their composition, microstructure, and magnetic properties were also investigated. It was found that the magnetic properties and the mechanisms governing the magnetization of these nanocomposite magnets are strongly influenced by the calcination temperature as well as the molar ratios of the hard and soft phases. The exchange-coupling between the hard and soft magnetic phases was confirmed by the study of Henkel plots and the variation in the magnetic properties could also be explained by the dominant role of exchange and dipolar interactions in the nanocomposites. The study provides a simple but efficient route for the fabrication of exchange-coupled nanocomposite magnets based on ferrites having controllable magnetic properties.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties of Alloys · Magnetic Properties and Synthesis of Ferrites · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Composite media for perpendicular magnetic recording10.1109/TMAG.2004.838075 ↗
2. Exchange-coupled FePtB nano-composite hard magnets produced by pulsed laser deposition10.1016/j.mseb.2010.03.070 ↗
3. Exchange coupled composite media for perpendicular magnetic recording10.1109/TMAG.2005.855278 ↗
4. A new approach for improving exchange-spring magnets10.1063/1.1855032 ↗
5. Anisotropy dependence of irreversible switching in Fe/SmCo and FeNi/FePt exchange spring magnet films10.1063/1.1954898 ↗
6. The Exchange-spring magnet: a new material principle for permanent magnets10.1109/20.102931 ↗
7. Giant energy product in nanostructured two-phase magnets10.1103/PhysRevB.48.15812 ↗
8. Top Nd–Fe–B magnets with greater than 56 MGOe energy density and 9.8 kOe coercivity10.1109/TMAG.2002.803075 ↗
9. Nanocrystalline high performance permanent magnets10.1016/S0304-8853(01)00989-1 ↗
10. Nanophase hard magnets10.1016/S0304-8853(99)00430-8 ↗
11. Critical Fe thickness for effective coercivity reduction in FePt/Fe exchange-coupled bilayer10.1016/j.jmmm.2011.11.026 ↗
12. Structural and magnetic properties of a core-shell type L10 FePt/Fe exchange coupled nanocomposite with tilted easy axis10.1063/1.3569845 ↗
13. Synthesis and magnetic properties of hard magnetic(CoFe2O4)–soft magnetic (Fe3O4) nano-composite ceramics by SPS technology10.1016/j.jmmm.2011.02.014 ↗
14. Enhancement of (BH)max in a hard-soft-ferrite nanocomposite usingexchange spring mechanism10.1063/1.3213341 ↗
15. Observation of the exchange spring behavior in hard–soft-ferrite nanocomposite10.1016/j.jmmm.2008.09.017 ↗
16. Exchange-spring effect in CoFe2O4/CoFe2 composite nano-particles10.1016/j.jallcom.2013.03.078 ↗
17. Simple ‘One-Pot’ synthetic route for preparation of (NiFe2O4)x–(BaFe12O19)1−x Composites10.1111/j.1551-2916.2011.04958.x ↗
18. Dependence of magnetic properties on crystallite size of CoFe2O4 nanoparticles synthesized by auto-combustion method10.1080/17458080902929895 ↗
19. Combustion synthesis and characterization of highly crystalline single phase nickel ferrite nanoparticles10.1016/j.jallcom.2011.03.176 ↗
20. Influence of pH on characteristics of BaFe12O19 powder prepared by sol-gel auto-combustion10.1016/j.jmmm.2005.07.014 ↗
21. Synthesis and Magnetic Properties of BaFe12−xAlxO19 Nanopowders10.1109/TMAG.2009.2024125 ↗
22. Synthesis and magnetic properties of nano Ba-hexaferrite/NiZn ferrite composites10.1002/pssa.200777228 ↗
23. Synthesis and magnetic properties of hard/soft SrFe12O19/Ni0.7Zn0.3Fe2O4 nanocomposite magnets10.1016/j.jmmm.2012.05.008 ↗
24. Synthesis and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles prepared by wet chemical route10.1016/j.jmmm.2006.06.003 ↗
25. Exchange-spring behavior in nanopowders of CoFe2O4–CoFe210.1063/1.3552677 ↗
26. The role of dipolar interaction in nanocomposite permanent magnets10.1016/j.jmmm.2005.08.026 ↗
27. Henkel plots of single-domain ferromagnetic particles10.1063/1.372996 ↗
28. Relations between different modes of acquisition of the remanent magnetization of ferromagnetic particles10.1063/1.1723232 ↗
29. Fe interparticle interactions in FexAg100−x granular alloys (2<x<50)10.1103/PhysRevB.72.184405 ↗