A study of magnetoresistive transition in high-Tc phase Bi-Pb-Sr-Ca-Cu-O thin film.

AbstractBasic thin film deposition processes for the high-Tc superconductors of Bi-systems are described. There appear several superconducting phases including the low-Tc phase Bi2Sr2Ca1 Cu2Ox and the high-Tc phase Bi2Sr2Ca2Cu3Ox. Thin films with these superconducting phases are synthesized by a selection of the substrate temperature Ts during the deposition : the high-Tc phase with Tc=100K is synthesized at Ts>800 °C; the low-Tc phase with Tc=80K, at Ts<600°C. However, these films often comprise show structure comprizing the different superconducting phases.The close control of the superconducting phase has been achieved by the layer-by-layer deposition in the atomic layer epitaxy process.

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Anomalous Hall effect in C-oriented high-Tc phase BiPbSrCaCuO thin film

Physica C Superconductivity ◽

10.1016/0921-4534(91)90076-b ◽

1991 ◽

Vol 178 (4-6) ◽

pp. 287-295 ◽

Cited By ~ 8

Author(s):

Yu-he Wang ◽

Lin Li ◽

Bing Li ◽

Ye-ye He ◽

Qing-hui Mong

Keyword(s):

Thin Film ◽

Hall Effect ◽

Anomalous Hall Effect ◽

High Tc ◽

High Tc Phase

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Sputtering synthesis of as-grown superconducting BiSrCaCuO thin film with single high-Tc phase

Physica B Condensed Matter ◽

10.1016/s0921-4526(09)80326-8 ◽

1990 ◽

Vol 165-166 ◽

pp. 1481-1482 ◽

Cited By ~ 1

Author(s):

Hiroshi Yamamoto ◽

Manabu Katoh ◽

Kenji Satoh ◽

Toshiyuki Nakamura ◽

Masaichi Tanaka

Keyword(s):

Thin Film ◽

High Tc ◽

High Tc Phase

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Preparation of Bi(Pb)SrCaCuO Thin Film with High-Tc Phase

Advances in Cryogenic Engineering Materials ◽

10.1007/978-1-4613-9880-6_73 ◽

1990 ◽

pp. 565-572

Author(s):

Tsutom Yotsuya ◽

Yoshihiko Suzuki ◽

Soichi Ogawa ◽

Hirofumi Imokawa ◽

Masahiro Yoshikawa ◽

...

Keyword(s):

Thin Film ◽

High Tc ◽

High Tc Phase

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Study Effect of annealing Temperature on enhancement of High-Tc Phase for BiPbSrCaCuZnO thin film through thermal expantion

Al-Mustansiriyah Journal of Science ◽

10.23851/mjs.v29i4.190 ◽

2019 ◽

Vol 29 (4) ◽

pp. 138

Author(s):

Suzan Malek ◽

Suzan Malek Shakouli

Keyword(s):

Thin Film ◽

Critical Temperature ◽

Annealing Temperature ◽

High Tc ◽

High Tc Phase ◽

Critical Temperature Tc

Annealing thermal plays an important role on the formation of high Tc-phase BiPbSrCaCuZnO through expansion and contraction layers which be associated with formation high and low phases respectively, The prepared samples composition BiPbSrCaCuZnO have been annealed at (820,840,860,880) C°. It is observed the critical temperature Tc increase for films which annealed at (820,840,880) C°while Tc decreases at Ta =860 C°.

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Modulated structures in (Bi,Pb)-Sr-Ca-Cu-O films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100173443 ◽

1990 ◽

Vol 48 (4) ◽

pp. 62-63

Author(s):

Shozo Ikeda ◽

Hirotoshi Hayakawa ◽

Daniel R. Dietderich

Keyword(s):

Rf Magnetron Sputtering ◽

Potential Method ◽

High Tc ◽

Bscco System ◽

Heat Treated ◽

Modulated Structures ◽

High Tc Phase ◽

Deposited Films ◽

Sputtering System

Pb addition makes easier to form the high Tc phase in the BSCCO system. However, Pb easily vaporized at high temperature. A controlled Pb potential method has been applied to grow the high Tc phase in films. Initially, films are deposited on cleaved MgO substrates using an rf magnetron sputtering system. These amorphous as-deposited films are heat treated in a sealed gold capsule along with a large pellet of Pb-added BSCCO. Details of the process and characterization of the films have been reported elsewhere (1). Films trated for 0.5h at 850° C contain mainly the low Tc phase with a small amount of the high Tc phase. Hawever, films treated for 3h at 850°C consist mainly of the high Tc phase. This film is superconductive with a Tc(zero) of 106K. The Pb/Bi ratio of the films, analysed by SEM- EDS, are 0.12 and 0.18 for heat tratment times of 0.5 and 3h, respectively. The present study investigates the modulated structures of these films using HREM.

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Synthesis and study the Structural and electrical and mechanical properties of High Temperature Superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ Substituted with nickel oxide for n=3

Ibn AL- Haitham Journal For Pure and Applied Science ◽

10.30526/31.3.2024 ◽

2018 ◽

Vol 31 (3) ◽

pp. 26 ◽

Cited By ~ 4

Author(s):

Laheeb. A. Mohammed ◽

Kareem. A. Jasim

Keyword(s):

Nickel Oxide ◽

High Temperature Superconductor ◽

Sintering Temperature ◽

Concentration Effects ◽

High Tc ◽

Xrd Diffraction ◽

Ni Content ◽

High Tc Phase ◽

Pure Phases ◽

Critical Temperature Tc

on this research is to study the effect of nickel oxide substitution on the pure phases superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ (n=3) where x=(0,0.2,0.4,0.6,0.8.and 1.0). The specimens in this work were prepared with used procedure of solid state reaction with sintering temperature 8500C for 24 h .we used technical (4-prob)to calculated and the critical temperature Tc . The results of the XRD diffraction analysis showed that the structure for pure and doped phases was tetragonal with phases high-Tc phase (1223),(1212) and low-Tc phase (1202) and add to the presence of some impure phase. It was noted the value a=b,c the parameter of the lattice increment with the increment of Ni content. The increment of (NiO) concentration effects electrical resistivity, dielectric constant and the hardness.

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