Hematite (α-Fe2O3) pure and doped with Eu3+ obtained by high-energy ball milling process

Hematite (α-Fe2O3) pure and doped with Eu3+ obtained by high-energy ball milling process

The α-Fe2O3:Eu3+ powders were prepared by high-energy ball milling using Fe(OO)H and Eu2O3 as raw materials. The Fe(OO)H and Eu2O3 powders were subjected to dry milling for 15, 30 and 45 h. The Rietveld refinements results showed that after 45 h of milling the materials obtained were α-Fe2O3 with 10...

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Veröffentlicht in:Materials chemistry and physics 2020-11, Vol.254, p.123385, Article 123385
Hauptverfasser: Stanhaus, Cristian, Alves, Lorena L.S., Ferrari, Jefferson L., Padilha, Janine C., Góes, Márcio Sousa
Format: Artikel
Sprache:eng
Schlagworte:
Ball milling
Crystallites
Emission
Europium
Europium compounds
Europium doping
Hematite
Hematite (α-Fe2O3)
High-energy ball milling
Iron oxides
Luminescence
Photoluminescence
Raw materials
Rietveld refinements
Unit cell
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Zusammenfassung:The α-Fe2O3:Eu3+ powders were prepared by high-energy ball milling using Fe(OO)H and Eu2O3 as raw materials. The Fe(OO)H and Eu2O3 powders were subjected to dry milling for 15, 30 and 45 h. The Rietveld refinements results showed that after 45 h of milling the materials obtained were α-Fe2O3 with 100 wt.% purity for the sample without Eu2O3, and 98.25 wt.% and 93.82 wt.% for the samples with 5 and 10 wt.% Eu2O3, respectively. The unit cell volume was greater for the samples with Eu2O3 (
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2020.123385