Structure and superconductivity of tin-containing hftizrsnm (M = cu, fe, nb, ni) medium-entropy and high-entropy alloys
Artikel i vetenskaplig tidskrift, 2021
In an attempt to incorporate tin (Sn) into high-entropy alloys composed of refractory metals Hf, Nb, Ti and Zr with the addition of 3d transition metals Cu, Fe, and Ni, we synthesized a series of alloys in the system HfTiZrSnM (M = Cu, Fe, Nb, Ni). The alloys were characterized crystallographically, microstructurally, and compositionally, and their physical properties were determined, with the emphasis on superconductivity. All Sn-containing alloys are multi-phase mixtures of intermetallic compounds (in most cases four). A common feature of the alloys is a microstructure of large crystalline grains of a hexagonal (Hf, Ti, Zr)5Sn3 partially ordered phase embedded in a matrix that also contains many small inclusions. In the HfTiZrSnCu alloy, some Cu is also incorporated into the grains. Based on the electrical resistivity, specific heat, and magnetization measurements, a superconducting (SC) state was observed in the HfTiZr, HfTiZrSn, HfTiZrSnNi, and HfTiZrSnNb alloys. The HfTiZrSnFe alloy shows a partial SC transition, whereas the HfTiZrSnCu alloy is non-superconducting. All SC alloys are type II superconductors and belong to the Anderson class of “dirty” superconductors.
Superconductivity
High-entropy alloys
Structure and microstructure
Författare
Darja Gačnik
Institut Jožef Stefan
A. Jelen
Institut Jožef Stefan
Mitja Krnel
Institut Jožef Stefan
S. Vrtnik
Institut Jožef Stefan
J. Luzar
Institut Jožef Stefan
P. Koželj
Univerza V Ljubljani
Institut Jožef Stefan
Marion van Midden
Institut Jožef Stefan
Erik Zupanič
Institut Jožef Stefan
Magdalena Wencka
Polish Academy of Sciences
Institut Jožef Stefan
A. Meden
Univerza V Ljubljani
Q. Hu
Jiangxi Academy of Sciences
Sheng Guo
Chalmers, Industri- och materialvetenskap, Material och tillverkning
J. Dolinšek
Institut Jožef Stefan
Univerza V Ljubljani
Materials
19961944 (eISSN)
Vol. 14 14 3953Ämneskategorier
Annan materialteknik
Metallurgi och metalliska material
Korrosionsteknik
Styrkeområden
Materialvetenskap
DOI
10.3390/ma14143953
PubMed
34300872