Phase Composition and Magnetic Properties of Fe2O3–FeO–Gd2O3 Powders after High-Energy Ball Milling and Thermal Treatment

Phase Composition and Magnetic Properties of Fe2O3–FeO–Gd2O3 Powders after High-Energy Ball Milling and Thermal Treatment

Comprehensive studies of powders with a nominal composition of 90% [43% Fe 2 O 3 –57% FeO]–10% Gd 2 O 3 are performed via scanning electron microscopy, microscopic X-ray spectral and phase analysis, differential scanning calorimetry, and measuring hysteresis properties. It is shown that the main pha...

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Veröffentlicht in:Bulletin of the Russian Academy of Sciences. Physics 2019-10, Vol.83 (10), p.1275-1281
Hauptverfasser: Salikhov, S. V., Toleukhanova, S. K., Bordyuzhin, I. G., Savchenko, A. G.
Format: Artikel
Sprache:eng
Schlagworte:
Ball milling
Gadolinium oxides
Hadrons
Heat treating
Heat treatment
Heavy Ions
Hysteresis
Iron oxides
Magnetic properties
Nuclear Physics
Phase composition
Phase transitions
Physics
Physics and Astronomy
Wustite
X ray spectra
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Zusammenfassung:Comprehensive studies of powders with a nominal composition of 90% [43% Fe 2 O 3 –57% FeO]–10% Gd 2 O 3 are performed via scanning electron microscopy, microscopic X-ray spectral and phase analysis, differential scanning calorimetry, and measuring hysteresis properties. It is shown that the main phases in the powders after high-energy ball milling are magnetite (Fe 3 O 4 ) and an amorphous phase; in addition, the powders contain about 2 vol % wustite (FeO) and less than 1 vol % orthoferrite (GdFeO 3 ). Trends of changes in the phase composition, structure, and hysteresis properties of the annealed powders are identified.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873819100186