Magnetostatic interactions among fine particles modified with ionic substitutions

Author

Bottoni, G.

Author_Institution

Dept. of Phys. Ferrara Univ., Italy

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

2661

Lastpage

2663

Abstract

The fine particles used in magnetic recording are frequently subjected to crystal lattice modifications with substituting ions in order to make them suitable for application in advanced recording technology. The magnetostatic interactions between the magnetic particles for undoped and doped materials are studied. The experimental investigation of the interactions is performed with the remanence curves analysis. Both in particles, where the doping increases the coercive field, and in particles doped in order to decrease H_c, the doping seems to weaken the interparticle interactions. The result is related to the evolution of the magnetization reversal mechanism in particles whose crystal and magnetic order is modified by ionic substitutions

Keywords

coercive force; crystal defects; magnetic properties of fine particles; magnetisation reversal; magnetostatics; remanence; advanced recording technology; coercive field; crystal lattice modifications; crystal order; doped materials; doping; interparticle interactions; ionic substitutions; magnetic order; magnetic particles; magnetic recording; magnetization reversal mechanism; magnetostatic interactions; remanence curves analysis; Crystalline materials; Doping; Lattices; Magnetic analysis; Magnetic materials; Magnetic particles; Magnetic recording; Magnetostatics; Performance analysis; Remanence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280833

Filename

280833