Phase Formation of Iron-Based Superconductors during Mechanical Alloying

Phase Formation of Iron-Based Superconductors during Mechanical Alloying

We successfully synthesized bulk Ba Na Fe As and Sr Na Fe As compounds by high-energy mechanical alloying (MA) technique. The MA process results in homogeneous amorphous phases of BaFe As and SrFe As . It was found that the optimum time for high-energy milling in all cases is about 1.5-2 h, and the...

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Veröffentlicht in:Materials 2022-11, Vol.15 (23), p.8438
Hauptverfasser: Vlasenko, Vladimir A, Degtyarenko, Alena Yu, Shilov, Andrei I, Tsvetkov, Alexey Yu, Kulikova, Lyudmila F, Medvedev, Alexey S, Pervakov, Kirill S
Format: Artikel
Sprache:eng
Schlagworte:
Atoms & subatomic particles
Crystal structure
Energy
Ferrous alloys
Heat treatment
Mechanical alloying
Molecular beam epitaxy
Software
Superconductivity
Superconductors
Thin films
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Zusammenfassung:We successfully synthesized bulk Ba Na Fe As and Sr Na Fe As compounds by high-energy mechanical alloying (MA) technique. The MA process results in homogeneous amorphous phases of BaFe As and SrFe As . It was found that the optimum time for high-energy milling in all cases is about 1.5-2 h, and the maximum amount of amorphous phase could be obtained when energy of 50-100 MJ/kg was absorbed by the powder. After a short-term heat treatment, we obtained nearly optimum sodium-doped Ba Na Fe As and Sr Na Fe As superconducting bulk samples. Therefore, MA is a potential scalable method to produce bulk superconducting material for industrial needs.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15238438