Cutting edge of high-entropy alloy superconductors from the perspective of materials research

J Kitagawa, S Hamamoto, N Ishizu - Metals, 2020 - mdpi.com
High-entropy alloys (HEAs) are a new class of materials which are being energetically
studied around the world. HEAs are characterized by a multicomponent alloy in which five or …

Silicon-Germanium and carbon-based superconductors for electronic, industrial, and medical applications

S Tayaba, H Sethi, H Shahid, R Malik, M Ikram… - Materials Science and …, 2023 - Elsevier
This review article explains the fundamental idea, basic theories, desired properties, and
material realizations of superconductors in a pedagogical manner. Organic …

Superconductivity and hardness of the equiatomic high-entropy alloy HfMoNbTiZr

J Kitagawa, K Hoshi, Y Kawasaki, R Koga… - Journal of Alloys and …, 2022 - Elsevier
We have found that body-centered cubic (bcc) HfMoNbTiZr is a type-II BCS high-entropy
alloy (HEA) superconductor with a superconducting critical temperature of T c= 4.1 K. By …

Superconductivity in CuAl2-type Co0.2Ni0.1Cu0.1Rh0.3Ir0.3Zr2 with a high-entropy-alloy transition metal site

Y Mizuguchi, MR Kasem, TD Matsuda - Materials Research Letters, 2021 - Taylor & Francis
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 …

[HTML][HTML] Metallurgy, superconductivity, and hardness of a new high-entropy alloy superconductor Ti-Hf-Nb-Ta-Re

T Hattori, Y Watanabe, T Nishizaki, K Hiraoka… - Journal of Alloys and …, 2023 - Elsevier
We explored quinary body-centered cubic (bcc) high-entropy alloy (HEA) superconductors
with valence electron concentrations (VECs) ranging from 4.6 to 5.0, a domain that has …

Synthesis of RE123 high-Tc superconductors with a high-entropy-alloy-type RE site

Y Shukunami, A Yamashita, Y Goto… - … C: Superconductivity and …, 2020 - Elsevier
We have synthesized high-entropy-alloy-type (HEA-type) RE123 superconductors Y 0.28 Nd
0.16 Sm 0.18 Eu 0.18 Gd 0.20 Ba 2 Cu 3 O 7-δ and Y 0.18 La 0.24 Nd 0.14 Sm 0.14 Eu 0.15 …

Superconductivity in High-Entropy-Alloy Telluride AgInSnPbBiTe5

Y Mizuguchi - Journal of the Physical Society of Japan, 2019 - journals.jps.jp
A polycrystalline sample of the high-entropy-alloy-type telluride AgInSnPbBiTe5 was
synthesized using high-pressure synthesis. Superconductivity with a transition temperature …

An efficient way of increasing the total entropy of mixing in high-entropy-alloy compounds: a case of NaCl-type (Ag, In, Pb, Bi) Te 1− x Se x (x= 0.0, 0.25, 0.5) …

A Yamashita, R Jha, Y Goto, TD Matsuda, Y Aoki… - Dalton …, 2020 - pubs.rsc.org
We propose an efficient way of increasing the entropy of mixing in high-entropy-alloy-type
compounds, which can be achieved by multi-site alloying. As an example of this concept, we …

Synthesis of new high-entropy alloy-type Nb3 (Al, Sn, Ge, Ga, Si) superconductors

A Yamashita, TD Matsuda, Y Mizuguchi - Journal of Alloys and Compounds, 2021 - Elsevier
Studies on high-entropy alloy (HEA) superconductors have recently been increasing,
particularly in the fields of materials science and condensed matter physics. To contribute to …

n-Type thermoelectric metal chalcogenide (Ag, Pb, Bi)(S, Se, Te) designed by multi-site-type high-entropy alloying

A Yamashita, Y Goto, A Miura, C Moriyoshi… - Materials Research …, 2021 - Taylor & Francis
A metal chalcogenide (Ag, Pb, Bi)(S, Se, Te) with an NaCl-type structure was designed by
multi-site-type high-entropy alloying (MST-HEA), and the thermoelectric properties were …