Superconductivity in CuAl2-type Co0.2Ni0.1Cu0.1Rh0.3Ir0.3Zr2 with a high-entropy-alloy transition metal site
TLDR
In this article, a superconducting transition was observed at 8.0 K after electrical resistivity, magnetization, and specific heat measurements, and the bulk characteristics of the superconductivity were confirmed through the specific heat measurement.Abstract:
Research on high-entropy-alloy (HEA) superconductors is a growing field in material science. In this study, we explored new HEA-type superconductors and discovered a CuAl2-type superconductor Co0.2Ni0.1Cu0.1Rh0.3Ir0.3Zr2 with a HEA-type transition metal site. A superconducting transition was observed at 8.0 K after electrical resistivity, magnetization, and specific heat measurements. The bulk characteristics of the superconductivity were confirmed through the specific heat measurements. The discovery of superconductivity in HEA-type Co0.2Ni0.1Cu0.1Rh0.3Ir0.3Zr2 will provide a novel pathway to explore new HEA-type superconductors and investigate the relationship between the mixing entropy and superconductivity of HEA-type compounds.read more
Citations
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Dissertation
On the theory of superconductivity
TL;DR: In this article, it was shown that a metal should be superconductive if a set of corners of a Brillouin zone is lying very near the Fermi surface, considered as a sphere, which limits the region in the momentum space completely filled with electrons.
Journal ArticleDOI
Synthesis of high-entropy-alloy-type superconductors (Fe,Co,Ni,Rh,Ir)Zr2 with tunable transition temperature
TL;DR: In this article, the synthesis and superconductivity of high-entropy-alloy-type (HEA-type) compounds TrZr2 (Tr = Fe, Co, Ni, Rh, Ir), in which the Tr site satisfies the criterion of HEA, were reported.
Book ChapterDOI
Superconductivity in HEA-Type Compounds
TL;DR: In this article, the effects of the introduction of a HEA site in various kinds of complicated compounds are discussed from the structuraldimensionality viewpoint, including NaCl-type metal tellurides, CuAl2-type transition metal zirconides, high-Tc cuprates, and BiS2-based layered superconductors.
Journal ArticleDOI
High critical current density and high-tolerance superconductivity in high-entropy alloy thin films
Yoon-Ho Han,Jin Hee Kim,Rahmatul Hidayati,Jong-Soo Rhyee,Jung-Min Lee,Won Nam Kang,Woo Seok Choi,Hye-ran Jeon,Jae Kwon Suk,Tuson Park +9 more
TL;DR: In this article , high-entropy alloy (HEA) superconductors are used to construct superconducting (SC) thin films of Ta-Nb-Hf-Zr-Ti HEAs via a pulsed laser deposition.
Journal ArticleDOI
n-Type thermoelectric metal chalcogenide (Ag,Pb,Bi)(S,Se,Te) designed by multi-site-type high-entropy alloying
Aichi Yamashita,Yosuke Goto,Akira Miura,Chikako Moriyoshi,Yoshihiro Kuroiwa,Yoshikazu Mizuguchi +5 more
TL;DR: In this paper, a metal chalcogenide with an NaCl-type structure was designed by multi-site-type high-entropy alloying (MST-HEA), and the thermoelectric properties were investigated.
References
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Journal ArticleDOI
An efficient way of increasing the total entropy of mixing in high-entropy-alloy compounds: a case of NaCl-type (Ag,In,Pb,Bi)Te1-xSex (x = 0.0, 0.25, 0.5) superconductors.
TL;DR: The synthesis and observation of polycrystalline samples of new high-entropy-alloy-type metal chalcogenides (Ag,In,Pb,Bi)Te1-xSex with NaCl-type structure are reported, which show the multi-site alloying effect on the entropy of mixing ( ΔSmix) for the examined samples.
Journal ArticleDOI
Superconductivity in a new hexagonal high-entropy alloy
Sourav Marik,Sourav Marik,Kapil Motla,Maneesha Varghese,K. P. Sajilesh,Deepak Singh,Yohann Bréard,P. Boullay,Ravi Pratap Singh +8 more
TL;DR: In this article, the synthesis, structure, and detailed superconducting properties of hexagonal-close-packed high-entropy alloys (HEAs) with hexagonal close-packed (hcp) structure are reported.
Journal ArticleDOI
The relation between normal state properties and Tc for some Zr2X compounds
Z. Fisk,R. Viswanathan,G.W. Webb +2 more
TL;DR: In this paper, it was shown that a certain feature of the normal state resistivity correlates with T c in a closely related group of superconductors, which is called T c-superconductors.
Journal ArticleDOI
Evolution of Anisotropic Displacement Parameters and Superconductivity with Chemical Pressure in BiS2-Based REO0.5F0.5BiS2 (RE = La, Ce, Pr, and Nd)
Yoshikazu Mizuguchi,Kazuhisa Hoshi,Yosuke Goto,Akira Miura,Kiyoharu Tadanaga,Chikako Moriyoshi,Yoshihiro Kuroiwa +6 more
TL;DR: In this paper, a synchrotron powder X-ray diffraction was performed to understand the mechanisms behind the emergence of superconductivity by the chemical pressure effect in REO 0.5F0.5BiS2 (RE = La, Ce, Pr, and Nd).