We successfully synthesized bulk BaNaFeAs and SrNaFeAs compounds by high-energy mechanical alloying (MA) technique. The MA process results in homogeneous amorphous phases of BaFeAs and SrFeAs. 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 BaNaFeAs and SrNaFeAs superconducting bulk samples. Therefore, MA is a potential scalable method to produce bulk superconducting material for industrial needs.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9737871 | PMC |
| http://dx.doi.org/10.3390/ma15238438 | DOI Listing |
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