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Influence of BaTiO3 additives on flux pinning in (Bi,Pb)-2223 superconductors

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  • 발행기관
    한국초전도저온학회 (구 한국초전도저온공학회) 바로가기
  • 간행물
    한국초전도·저온논문지 (구 한국초전도저온공학회논문지) KCI 등재 SCOPUS 바로가기
  • 통권
    Vol.28 No.3 (2026.09)바로가기
  • 페이지
    pp.12-17
  • 저자
    Jae Yong Jo, Muhammad A. Anugrah, Min Ho Kang, Junkyu Choi, Jae Gu Song, Tuson Park, Byeongwon Kang
  • 언어
    한국어(KOR)
  • URL
    https://www.earticle.net/Article/A494001

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초록

영어
The influence of BaTiO3 (BTO) addition on phase formation, microstructure, and flux pinning properties of Bi1.6Pb0.4Sr2Ca2Cu3O10+δ((Bi,Pb)-2223)) bulk superconductors were systematically investigated. Samples containing 00.7 wt% BTO were synthesized using the conventional solid-state method. Phase composition, microstructure, and elemental distribution were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). Superconducting properties were evaluated through resistance-temperature and magnetization measurements, with the critical current density (Jc) determined from magnetic hysteresis loops using the Bean’s critical-state model. XRD analysis showed that increasing BTO content reduced the Bi-2223 phase fraction while promoting the formation of Bi-2212 and CaPbO4 secondary phases. SEM observations indicated that BTO addition modified the plate-like grain morphology and generally promoted grain refinement. EDS mapping showed distinct spatial distributions of Ba and Ti, suggesting partial decomposition of BTO and subsequent redistribution within the (Bi,Pb)-2223 matrix during sintering. Normalized pinning-force analysis demonstrated that at high magnetic fields, pure and 0.3 wt.% BTO samples exhibited close to normal point-pinning behavior, whereas other BTO-added samples showed behavior close to surface-pinning. Overall, these results confirm that BTO addition significantly modifies the phase evolution, microstructure, and flux pinning mechanisms of (Bi,Pb)-2223 bulk superconductors.

목차

Abstract
1. 서론
2. 실험
3. 결과 및 고찰
3.1. 상 형성 및 결정자 크기
3.2. 초전도 전이 특성
3.3. 표면 미세구조 및 원소 분포
3.4. 임계전류밀도 및 자속고정
4. 결론
ACKNOWLEDGMENT
REFERENCES

저자

  • Jae Yong Jo [ Department of Physics, Chungbuk National University, Cheongju, South Korea ]
  • Muhammad A. Anugrah [ Department of Physics, Chungbuk National University, Cheongju, South Korea ]
  • Min Ho Kang [ Department of Physics, Chungbuk National University, Cheongju, South Korea ]
  • Junkyu Choi [ Department of Physics, Chungbuk National University, Cheongju, South Korea ]
  • Jae Gu Song [ Centre for Quantum Materials and Superconductivity (CQMS), Department of Physics, Sungkyunkwan University, Suwon, South Korea ]
  • Tuson Park [ Centre for Quantum Materials and Superconductivity (CQMS), Department of Physics, Sungkyunkwan University, Suwon, South Korea ]
  • Byeongwon Kang [ Department of Physics, Chungbuk National University, Cheongju, South Korea ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국초전도저온학회 (구 한국초전도저온공학회) [The Korean Society of Superconductivity and Cryogenics (KSSC)]
  • 설립연도
    1998
  • 분야
    공학>전기공학
  • 소개
    21세기 핵심기술인 초전도공학과 저온공학분야의 기술 수준을 향상시키고, 선진 외국의 관련 학회와의 국제 교류 뿐만 아니라 이 분야에서 산.학.연의 학술활동 및 기술교류의 구심점으로의 그 역할을 성실히 수행하고자 한다.

간행물

  • 간행물명
    한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]
  • 간기
    계간
  • pISSN
    1229-3008
  • eISSN
    2287-6251
  • 수록기간
    1999~2026
  • 등재여부
    KCI 등재,SCOPUS
  • 십진분류
    KDC 427 DDC 537

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