Earticle

초록

영어

High-entropy alloys (HEAs) consist of five or more principal elements with atomic fraction between 5 % and 35 %, randomly distributed throughout the lattice points. Recently, a simple body-centered cubic structure HEA superconductor, Ta1/6Nb2/6Hf1/6Zr1/6Ti1/6, was discovered and classified as a type-II superconductor with a critical temperature of approximately 8 K. Ta-Nb-Hf-Zr-Ti HEA superconductors exhibit a large critical current density of 1 MA cm-2 and demonstrate robust superconductivity against irradiation-induced disorder. We have synthesized HEA superconductors based on the composition Ta1/6Nb2/6Hf1/6Zr1/6Ti1/6 with various Ce doping concentrations (0.1 wt%, 0.5 wt%, 1 wt%, 2 wt%, 4 wt%, 8 wt%), investigating the effects of Ce addition on the crystal structure and superconductivity. X-ray diffraction and energy dispersive x-ray spectroscopy results indicate the complex Ce addition effects on the crystals. Notably, while the superconducting transition temperature remains largely unaffected by the presence of magnetic impurities, it is found to be closely related to the lattice constant, which changes with varying Ce doping concentrations.

목차

Abstract
1. INTRODUCTION
2. EXPERIMENTS
3. RESULTS AND DISCUSSION
4. SUMMARY
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• Han Yoon [ Department of Physics, Changwon National University, Changwon 51140, Republic of Korea ]
• Yunha Kim [ Department of Physics, Changwon National University, Changwon 51140, Republic of Korea ]
• Minju Jeong [ Department of Physics, Changwon National University, Changwon 51140, Republic of Korea ]
• Yoonseok Han [ Center for Quantum Materials and Superconductivity (CQMS), Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea ]
• Jaegu Song [ Center for Quantum Materials and Superconductivity (CQMS), Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea ]
• Tuson Park [ Center for Quantum Materials and Superconductivity (CQMS), Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea ]
• Soon-Gil Jung [ Department of Physics Education, Sunchon National University, Suncheon 57922, Republic of Korea ]
• Soonbeom Seo [ Department of Physics, Changwon National University, Changwon 51140, Republic of Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2025

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537