Journal ArticleDOI
Specific heat anomaly in Bi1.6Pb0.4Sr2Ca2Cu3Oy superconductor
TLDR
The specific heat anomaly Δ C of Bi 16 Pb 04 Sr 2 Ca 2 Cu 3 O y was observed in the temperature range 80-100 K as discussed by the authors, and it was estimated from Δ C that γ∼15 mJ/mol·K 2 and H c2(T = 0)∼100 T in this sample.Abstract:
The specific heat anomaly Δ C of Bi 16 Pb 04 Sr 2 Ca 2 Cu 3 O y was observed in the temperature range 80–100 K It is estimated from Δ C that γ∼15 mJ/mol·K 2 and H c2( T =0)∼100 T in this sample The specific heat anomaly confirmed the occurrence of bulk superconductivity of the high- T c phase in Bi 16 Pb 04 Sr 2 Ca 2 Cu 3 O y superconductorread more
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Computer simulation study of oxygen migration in YBa2Cu3O7
TL;DR: In this paper, a variety of migration mechanisms were considered including vacancy, direct interstitial and interstitialcy mechanisms, and an interlayer vacancy mechanism involving O(1) chain and O(4) apical sites is the most favourable migration mechanism.
Journal ArticleDOI
Bi2−xPbx(Ca, Sr)n+1CunO2n+4+δ (n=1, 2, 3, and 4) family of superconductors
TL;DR: In this article, the superconducting transition temperature of the Bi 1.5 Pb 0.5 (Ca, Sr) n +1 Cu n O 2 n +4+δ series with n = 1, 2, 3 and 4 has been characterized.
Journal ArticleDOI
Specific heat and magnetic susceptibility of the high-Tc superconductor (Bi, Pb, Sb)2Sr2Ca2Cu3O10
TL;DR: In this paper, the temperature dependence of the specific heat and magnetic susceptibility of single phase (Bi, Pb, Sb) 2 Sr 2 Ca 2 Cu 3 O 10 has been measured.
Journal ArticleDOI
Photo-acoustic study on the thermal properties of high T c superconducting oxide Bi1.6Pb0.4Sr2Ca2Cu3O x
Journal ArticleDOI
Measurement of the specific-heat anomaly at Tc in Bi1.6Pb0.4Sr2Ca2Cu3O10
TL;DR: In this article, the experimental results of specific heat C p (T ) data of Bi 1.6 Pb 0.4 Ca 2 Ca 2 Cu 3 O 10 show a clearly developed anomaly around the temperature of the transition to superconductivity T c =106.7 K.
References
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Journal ArticleDOI
Superconductivity up to 114 K in the Bi-Al-Ca-Sr-Cu-O compound system without rare-earth elements.
Ching-Wu Chu,J. Bechtold,Li Gao,Pei-Herng Hor,Z. J. Huang,R. L. Meng,Y. Y. Sun,Y. Q. Wang,Y.Y. Xue +8 more
TL;DR: Stable superconductivity up to 114 K has been reproducibly detected in Bi-Al-Ca-Sr-Cu-O multiphase systems without any rare-earth elements, providing an extra material base for the study of the mechanism of high-temperaturesuperconductivity and also the prospect of reduced material cost for future applications of superconductor.
Journal ArticleDOI
Absence of the linear-temperature term in the heat capacity of the Bi-Sr-Ca-Cu-O system
Ken-ichi Kumagai,Yuki Nakamura +1 more
TL;DR: In this article, the authors measured the heat capacity of nominal composition of BiBaCaCu 2 O y at 2 and 10 K and found that the resistivity of the sample decreases linearly with decreasing temperature and tends to zero at 65 K.