The 130 K High-Tc superconductor in the system Bi-Sr-Ca-Cu-O doped with Sb and Pb

Qinlun Xu, Guang Yao Meng, Dong Yu, Xiaojian Pan, Xiao Wei Lu, Zhiqiang Mao, Yi Dong, Zhaojia Chen, Jiang Lu, Cheng gao Fan, Guien Zhou, Yuheng Zhang

Research output: Contribution to journalArticle

Abstract

A nearly pure 2223 phase of the ceramic superconductor Bi1.8Pb0.3Sb0.1Sr2Ca2Cu3O10-δ was obtained by solid-state reaction in air. The samples showed a semiconducting behavior when the temperature was higher than 140 K. The electrical resistance began to drop at 140 K and went to zero at 92 K. Their a.c. magnetic susceptibility showed two transitions at 130 and 89 K, but the 110 K transition was absent. These transitions were stable during cycling for three times from 77 K to room temperature. X-ray diffraction revealed that there was no 2212 or 2201 phase in these samples but only a small amount of monoclinic phase before and after cycling from 77 K to room temperature. SEM images showed that the grains of the monoclinic phase segregated on the surface of the sample and at the grain boundaries inside the sample, which is the reason for the sample's poor superconductivity and the decrease in zero resistance. Evidence from TEM and SEM equipped with a wavelength dispersive meter indicated distortion of the 2223 phase. These distorted 2223 crystals may be responsible for the 130 K superconductivity.

Original languageEnglish (US)
Pages (from-to)183-187
Number of pages5
JournalJournal of Superconductivity
Volume3
Issue number2
DOIs
StatePublished - Jun 1 1990

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Superconducting materials
Superconductivity
Ceramic superconductors
Scanning electron microscopy
Acoustic impedance
Solid state reactions
Magnetic susceptibility
superconductivity
Temperature
Grain boundaries
cycles
scanning electron microscopy
Transmission electron microscopy
room temperature
X ray diffraction
Wavelength
Crystals
electrical resistance
Air
grain boundaries

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Xu, Qinlun ; Meng, Guang Yao ; Yu, Dong ; Pan, Xiaojian ; Lu, Xiao Wei ; Mao, Zhiqiang ; Dong, Yi ; Chen, Zhaojia ; Lu, Jiang ; Fan, Cheng gao ; Zhou, Guien ; Zhang, Yuheng. / The 130 K High-Tc superconductor in the system Bi-Sr-Ca-Cu-O doped with Sb and Pb. In: Journal of Superconductivity. 1990 ; Vol. 3, No. 2. pp. 183-187.
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title = "The 130 K High-Tc superconductor in the system Bi-Sr-Ca-Cu-O doped with Sb and Pb",
abstract = "A nearly pure 2223 phase of the ceramic superconductor Bi1.8Pb0.3Sb0.1Sr2Ca2Cu3O10-δ was obtained by solid-state reaction in air. The samples showed a semiconducting behavior when the temperature was higher than 140 K. The electrical resistance began to drop at 140 K and went to zero at 92 K. Their a.c. magnetic susceptibility showed two transitions at 130 and 89 K, but the 110 K transition was absent. These transitions were stable during cycling for three times from 77 K to room temperature. X-ray diffraction revealed that there was no 2212 or 2201 phase in these samples but only a small amount of monoclinic phase before and after cycling from 77 K to room temperature. SEM images showed that the grains of the monoclinic phase segregated on the surface of the sample and at the grain boundaries inside the sample, which is the reason for the sample's poor superconductivity and the decrease in zero resistance. Evidence from TEM and SEM equipped with a wavelength dispersive meter indicated distortion of the 2223 phase. These distorted 2223 crystals may be responsible for the 130 K superconductivity.",
author = "Qinlun Xu and Meng, {Guang Yao} and Dong Yu and Xiaojian Pan and Lu, {Xiao Wei} and Zhiqiang Mao and Yi Dong and Zhaojia Chen and Jiang Lu and Fan, {Cheng gao} and Guien Zhou and Yuheng Zhang",
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Xu, Q, Meng, GY, Yu, D, Pan, X, Lu, XW, Mao, Z, Dong, Y, Chen, Z, Lu, J, Fan, CG, Zhou, G & Zhang, Y 1990, 'The 130 K High-Tc superconductor in the system Bi-Sr-Ca-Cu-O doped with Sb and Pb', Journal of Superconductivity, vol. 3, no. 2, pp. 183-187. https://doi.org/10.1007/BF00624506

The 130 K High-Tc superconductor in the system Bi-Sr-Ca-Cu-O doped with Sb and Pb. / Xu, Qinlun; Meng, Guang Yao; Yu, Dong; Pan, Xiaojian; Lu, Xiao Wei; Mao, Zhiqiang; Dong, Yi; Chen, Zhaojia; Lu, Jiang; Fan, Cheng gao; Zhou, Guien; Zhang, Yuheng.

In: Journal of Superconductivity, Vol. 3, No. 2, 01.06.1990, p. 183-187.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The 130 K High-Tc superconductor in the system Bi-Sr-Ca-Cu-O doped with Sb and Pb

AU - Xu, Qinlun

AU - Meng, Guang Yao

AU - Yu, Dong

AU - Pan, Xiaojian

AU - Lu, Xiao Wei

AU - Mao, Zhiqiang

AU - Dong, Yi

AU - Chen, Zhaojia

AU - Lu, Jiang

AU - Fan, Cheng gao

AU - Zhou, Guien

AU - Zhang, Yuheng

PY - 1990/6/1

Y1 - 1990/6/1

N2 - A nearly pure 2223 phase of the ceramic superconductor Bi1.8Pb0.3Sb0.1Sr2Ca2Cu3O10-δ was obtained by solid-state reaction in air. The samples showed a semiconducting behavior when the temperature was higher than 140 K. The electrical resistance began to drop at 140 K and went to zero at 92 K. Their a.c. magnetic susceptibility showed two transitions at 130 and 89 K, but the 110 K transition was absent. These transitions were stable during cycling for three times from 77 K to room temperature. X-ray diffraction revealed that there was no 2212 or 2201 phase in these samples but only a small amount of monoclinic phase before and after cycling from 77 K to room temperature. SEM images showed that the grains of the monoclinic phase segregated on the surface of the sample and at the grain boundaries inside the sample, which is the reason for the sample's poor superconductivity and the decrease in zero resistance. Evidence from TEM and SEM equipped with a wavelength dispersive meter indicated distortion of the 2223 phase. These distorted 2223 crystals may be responsible for the 130 K superconductivity.

AB - A nearly pure 2223 phase of the ceramic superconductor Bi1.8Pb0.3Sb0.1Sr2Ca2Cu3O10-δ was obtained by solid-state reaction in air. The samples showed a semiconducting behavior when the temperature was higher than 140 K. The electrical resistance began to drop at 140 K and went to zero at 92 K. Their a.c. magnetic susceptibility showed two transitions at 130 and 89 K, but the 110 K transition was absent. These transitions were stable during cycling for three times from 77 K to room temperature. X-ray diffraction revealed that there was no 2212 or 2201 phase in these samples but only a small amount of monoclinic phase before and after cycling from 77 K to room temperature. SEM images showed that the grains of the monoclinic phase segregated on the surface of the sample and at the grain boundaries inside the sample, which is the reason for the sample's poor superconductivity and the decrease in zero resistance. Evidence from TEM and SEM equipped with a wavelength dispersive meter indicated distortion of the 2223 phase. These distorted 2223 crystals may be responsible for the 130 K superconductivity.

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