Structure and superconductivity of tin-containing hftizrsnm (M = cu, fe, nb, ni) medium-entropy and high-entropy alloys
Journal article, 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.


High-entropy alloys

Structure and microstructure


Darja Gačnik

Jozef Stefan Institute

A. Jelen

Jozef Stefan Institute

Mitja Krnel

Jozef Stefan Institute

S. Vrtnik

Jozef Stefan Institute

J. Luzar

Jozef Stefan Institute

P. Koželj

University of Ljubljana

Jozef Stefan Institute

Marion van Midden

Jozef Stefan Institute

Erik Zupanič

Jozef Stefan Institute

Magdalena Wencka

Polish Academy of Sciences

Jozef Stefan Institute

A. Meden

University of Ljubljana

Q. Hu

Jiangxi Academy of Sciences

Sheng Guo

Chalmers, Industrial and Materials Science, Materials and manufacture

J. Dolinšek

Jozef Stefan Institute

University of Ljubljana


1996-1944 (ISSN)

Vol. 14 14 3953

Subject Categories

Other Materials Engineering

Metallurgy and Metallic Materials

Corrosion Engineering

Areas of Advance

Materials Science





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