Pregled bibliografske jedinice broj: 598023
X-ray diffraction and57Fe Mössbauer spectra of the system Fe2O3-Ga2O3
X-ray diffraction and57Fe Mössbauer spectra of the system Fe2O3-Ga2O3 // Journal of materials science, 24 (1989), 8; 2722-2726 doi:10.1007/BF02385616 (međunarodna recenzija, članak, znanstveni)
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Naslov
X-ray diffraction and57Fe Mössbauer spectra of the
system Fe2O3-Ga2O3
Autori
Musić, Svetozar ; Popović, Stanko ; Ristić, Mira
Izvornik
Journal of materials science (0022-2461) 24
(1989), 8;
2722-2726
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
X-ray diffraction ; Mossbauer spectroscopy ; Hematite ; Gallium substitution ; Solid-solutions
Sažetak
The influence of gallium substitution on the chemical and structural properties of haematite, α-Fe2O3, has been studied using X-ray diffraction and57Fe Mössbauer spectroscopy. The presence of only α-(GaxFe1-x)2O3 phase is detected for the compositions with x between 0.01 and 0.90. A gradual decrease of the unit-cell parameters of α- (GaxFe1-x)2O3 with the increase of gallium substitution is measured.57Fe Mössbauer spectra showed that the value of the magnetic hyperfine field of pure α-Fe2O3 decreases with increasing gallium for iron substitution. The hyperfine magnetic structure, which is observed for α- (GaxFe1-x)2O3 at room temperature, collapsed for the composition with x≃0.50. The changes in the57Fe Mössbauer spectra of the α-(GaxFe1-x)2O3 phase are discussed in the sense of the electronic relaxation and the superparamagnetic effects.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
Citiraj ovu publikaciju:
Časopis indeksira:
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
