Correlation between local structure variations and critical temperature of (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(TiO2)x superconductor
Correlation between local structure variations and critical temperature of (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(TiO2)x superconductor
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(Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(TiO2)x超导体局部结构变化与临界温度的相关性
DOI:
10.1016/j.ceramint.2022.11.237
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发表时间:
2023
影响因子:
5.2
通讯作者:
D.H. Tran
中科院分区:
文献类型:
--
作者:
A.T. Pham;L.H. Vu;D.T. Tran;N.D. Thien;W. Klysubun;T. Miyanaga;N.K. Man;N.T.T. Duong;N.T. Long;P.V. Pham;N.T. Binh;D.H. Tran
TiO2doping content affects the critical temperature (Tc) and the variations of local structure on Bi1.6Pb0.4Sr2Ca2Cu3O10+δ. The (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(TiO2)xsamples were fabricated with the solid-state reaction process, where x = 0, 0.002, 0.004, 0.006, 0.008, and 0.01. TheTcvalues of the samples were obtained by measuring resistivity versus temperature, indicating thatTcgradually decreased with increasing doping content (x). To explain the obtained degradation ofTc, carrier properties, role of interlayer coupling, and local structure were systematically investigated using Azlamozov–Larkin theory and its Lawrence–Doniach modification for strong anisotropic superconductors. The calculation of excess conductivity at the mean field region showed that the c-axis coherence length (ξc) and the effective inter-layering spacing (d) increased with increasing doping content. X-ray diffraction patterns also showed that the bond distances increased with increasing TiO2content. The copper valence (V) and carrier concentration (p) of the samples were determined by analyzing the Cu L2,3-edge X-ray absorption near edge structure spectra. The values ofVandpshowed the same trend of decreasing with increasingx. A close correlation between the changes in local structure parameters and degradation ofTcof (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(TiO2)xwas then probably concluded.
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影响因子:
2
作者:
Y. Morita;M. Karppinen;H. Yamauchi;R. Liu;J. M. Chen
通讯作者:
J. M. Chen
DOI:
10.1103/physrevb.51.9180
发表时间:
1995
期刊:
Physical review. B, Condensed matter
影响因子:
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2008
期刊:
影响因子:
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E. M. Elsheikh
DOI:
10.1103/physrevb.48.6703
发表时间:
1993
期刊:
Physical review. B, Condensed matter
影响因子:
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