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
More filters
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
More filters
Journal ArticleDOI
Superconductivity in REO0.5F0.5BiS2 with high-entropy-alloy-type blocking layers
TL;DR: In this article, the authors synthesized new rare earth superconductors with high-entropy-alloy-type (HEA-type) REO blocking layers, and the lattice constant was systematically changed with the RE concentration and the RE ionic radius.
Journal ArticleDOI
Superconducting Ti15Zr15Nb35Ta35 High-Entropy Alloy With Intermediate Electron-Phonon Coupling
Yuan Yuan,Yuan Wu,Huiqian Luo,Zhaosheng Wang,Xue Liang,Zhi Yang,Hui Wang,Xiongjun Liu,Zhaoping Lu +8 more
TL;DR: The body-centered cubic (BCC) Ti15Zr15Nb35Ta35 high-entropy alloy showed superconducting behavior at around 8 K.
Journal ArticleDOI
Synthesis of RE123 high-Tc superconductors with a high-entropy-alloy-type RE site
TL;DR: In this paper, the mixing entropy at the rare earth site does not affect Tc and critical current density (Jc) of the RE123 samples, and orthorhombicity was found to be an essential parameter for Tc.
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 first hexagonal superconducting high entropy alloy (HEA) composed of five randomly distributed transition-metals was synthesized by combining room temperature precession electron diffraction and powder X-ray diffraction.
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, the mechanisms behind the emergence of superconductivity by the chemical pressure effect in REO 0.5F0.5BiS2 (RE = La, Ce, Pr, and Nd) were investigated.