BALL-MILLED BARIUM FERRITE-EFFECTS OF ANNEALING

Authors
CAMPBELL SJ KACZMAREK WA WANG GM
Citation
Sj. Campbell et al., BALL-MILLED BARIUM FERRITE-EFFECTS OF ANNEALING, Nanostructured materials, 6(5-8), 1995, pp. 687-690
Citations number
5
Categorie Soggetti
Material Science
Journal title
Nanostructured materials → ACNP
ISSN journal
09659773
Volume
6
Issue
5-8
Year of publication
1995
Pages
687 - 690
Database
ISI
SICI code
0965-9773(1995)6:5-8<687:BBFOA>2.0.ZU;2-P
Abstract
Extended milling of BaFe12O19 powder in air results in multiple compon ents with evidence for: structurally disordered BaFe12O19 and alpha-Fe 2O3, a disordered/amorphous phase, and superparamagnetic relaxation ef fects due to the fine particles. The multi-phase nature is found to re main on annealing at 500 degrees C in air or vacuum whereas annealing al 1000 degrees C causes crystalline BaFe12O19 with increased magnetic coercivity to be formed.