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Добірка наукової літератури з теми "BSCCO-2212"

Автор: Grafiati
Опубліковано: 23 вересня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "BSCCO-2212"

1

Rahmah, Karlina, Suprihatin Suprihatin, and Pulung Karo Karo. "Pengaruh Variasi Waktu Sintering Terhadap Pertumbuhan Fase Bahan Superkonduktor BSCCO-2212 dengan Kadar Ca=1,10 Menggunakan Metode Pencampuran Basah." Journal of Energy, Material, and Instrumentation Technology 1, no. 1 (May 31, 2020): 7–11. http://dx.doi.org/10.23960/jemit.v1i1.5.

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Анотація:
This research was conducted to determine the effect of sintering time on the formation of the superconducting phase BSCCO-2212 by calculating the level of purity of the phases formed and looking at the microstructure. The variation of sintering time was 10, 20, 30 and 40 hours using the wet mixing method. The sample was calcinated with 800 °C for 10 hours and sintered with 830 °C. The XRD’s characterization result shows a decrease in phase purity with increasing the sintering time. The relative high volume fraction of the BSCCO-2212/ts10 sample is 90,48% while, the lowest volume fraction of BSCCO-2212/tc40 is 50,74%. The relative high orientation degree of BSCCO-2212/ts20 is 18,47% and the lowest orientation degree of BSCCO-2212/ts10 is 8,4%. The SEM’s characterization result shows of all samples have been oriented and have relatively little space between slabs (voids).
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2

Karo, Pulung Karo, Risky Putra Ramadhan, Suprihatin Suprihatin, and Yanti Yulianti. "Analisis Pertumbuhan Fase Superkonduktor BSCCO-2212 dan BPSCCO-2212 Akibat Variasi Suhu Sintering Menggunakan Metode Pencampuran Basah." Journal of Energy, Material, and Instrumentation Technology 2, no. 4 (November 30, 2021): 86–95. http://dx.doi.org/10.23960/jemit.v2i4.77.

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The research was conducted to determine the effect of sintering temperature on the level of purity of the superconducting phase BSCCO-2212 and BPSCCO-2212 using the wet mixing method. Sintering was carried out for 20 hours with variations in sintering temperature: 825, 830, 835 and 840°C. XRD results showed that the phase purity level increased until it reached the optimum point at 835°C sintering temperature and then decreased at 840°C. The highest volume fraction of the BSCCO-2212 sample was obtained at a sintering temperature of 835°C at 71.09% and the highest degree of orientation was obtained at a sintering temperature of 830°C at 26.44%. In the BPSCCO-2212 sample, the highest volume fraction was obtained at a sintering temperature of 835°C at 52.59% and the highest degree of orientation at a sintering temperature of 830°C at 43.49%. The results of the comparison of BSCCO-2212 and BPSCCO-2212 samples showed that the BPSCCO-2212 sample had a higher level of phase purity than BSCCO-2212.
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3

Feng, Yi, D. C. Larbalestier, S. E. Babcock, and J. B. VanderSande. "Phase composition and local grain alignment at the Ag/superconductor interface in Ag-sheathed Bi-Sr-Ca-Cu-O tapes." Proceedings, annual meeting, Electron Microscopy Society of America 51 (August 1, 1993): 1140–41. http://dx.doi.org/10.1017/s0424820100151532.

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Texturing of the superconductor phase and proximity to a sourse of silver appear to be crucial to the development of high critical current density tapes of the Bi-Sr-Ca-Cu-O (BSCCO) high-temperature superconductors, yet relatively little is understood about the mechanism(s) by which the [001] texture develops and the complex role that the silver sheath material plays. We have studied the phase composition, alignment, and bonding at the Ag/BSCCO interface for silver-sheathed tapes of both the 2212 and 2223 phases that have been processed under fundamentally different conditions. High-resolution TEM imaging revealed details of the interface that give insight into these important questions.Ag-sheathed BSCCO tapes with cation compositions Bi2Sr2CaCu2Ox (2212) and Bi1.8Pb0.4Sr2.0Ca2.2Cu3Ox (2223) were prepared by standard powder-in-tube methods. 2212 sample A was heat-treated at 920°C for 15 minutes to melt the superconductor core, then cooled at 240°C/h from 920°C to 840°C and annealed at 840°C for 70 hours.
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4

Barzi, E., V. Lombardo, D. Turrioni, F. J. Baca, and T. G. Holesinger. "BSCCO-2212 Wire and Cable Studies." IEEE Transactions on Applied Superconductivity 21, no. 3 (June 2011): 2335–39. http://dx.doi.org/10.1109/tasc.2011.2106106.

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5

Timofeev, V. N., and I. G. Gorlova. "Superstructure defects in BSCCO (2212) whiskers." Physica C: Superconductivity 282-287 (August 1997): 875–76. http://dx.doi.org/10.1016/s0921-4534(97)00527-3.

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6

Gorlova, I. G., S. G. Zybtsev, V. Ya Pokrovskii, and V. N. Timofeev. "Fluctuation conductivity of BSCCO (2212) whiskers." Physica C: Superconductivity 282-287 (August 1997): 1533–34. http://dx.doi.org/10.1016/s0921-4534(97)00871-x.

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7

Dhalle, M., M. N. Cuthbert, J. Thomas, G. K. Perkins, A. D. Caplin, M. Yang, and M. Gorringe. "Dissipation in BSCCO/Ag 2212 ribbons." IEEE Transactions on Appiled Superconductivity 5, no. 2 (June 1995): 1317–20. http://dx.doi.org/10.1109/77.402805.

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8

Wang, Jyh-Lih, I.-Fei Tsu, X. Y. Cai, R. J. Kelley, M. D. Vaudin, S. E. Babcock, and D. C. Larbalestier. "Electromagnetic and microstructural investigations of a naturally grown 8° [001] tilt bicrystal of Bi2Sr2CaCu208 + x." Journal of Materials Research 11, no. 4 (April 1996): 868–77. http://dx.doi.org/10.1557/jmr.1996.0108.

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Анотація:
Electromagnetic characterization and high resolution transmission electron microscopy have been conducted on the same 8° [001] symmetrical (010) tilt boundary in a naturally grown, bulk-scale bicrystal of Bi2Sr2CaCu2O8 + x (BSCCO-2212). The resistive transition showed excess resistance above and below Tc, suggesting some weak coupling at the boundary, but the inter- and intragranular voltage-current characteristics, irreversibility fields, and critical current density (Jc) values were very similar and characteristic of strongly coupled grains and grain boundary. The misorientation was accommodated by a set of partial dislocations with the Frank spacing of 1.9 nm. The dislocation cores appeared to be separated by relatively undistorted regions of crystal. The Jc, values at 25 K exceeded 103 A/cm2 in fields of several tesla, more than two orders of magnitude larger than that found earlier in [001] twist boundaries of BSCCO-2212. This result is consistent with the view that low angle [001] till boundaries play an important role for current transport in polycrystalline BSCCO tapes.
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9

POP, M., GH BORODI, I. Gr DEAC, and S. SIMON. "Gd SUBSTITUTION EFFECT ON THE FORMATION OF Bi-BASED SUPERCONDUCTING GLASS CERAMICS." Modern Physics Letters B 14, no. 02 (January 20, 2000): 59–63. http://dx.doi.org/10.1142/s0217984900000100.

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The effect of calcium substitution by gadolinium on the superconducting phases formation in BSCCO-type compounds is studied by X-ray diffraction and ac susceptibility measurements on the undoped and Gd-doped Bi1.8Pb0.2Sr2CaCu2Oz and Bi1.8Pb0.2Sr2Ca2Cu3Oz systems. The addition of gadolinium to the samples favors the 2212 phase formation in both 2212 and 2223 starting compositions. It is suggested that a correlation exists between the stabilization effect of gadolinium on the 2212 phase formation and the Gd3+ coordination in oxide compounds.
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10

Thomas, P. J., J. C. Fenton, G. Yang, and C. E. Gough. "Intrinsic c-axis transport in 2212-BSCCO." Physica C: Superconductivity 341-348 (November 2000): 1547–50. http://dx.doi.org/10.1016/s0921-4534(00)01330-7.

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Більше джерел

Дисертації з теми "BSCCO-2212"

1

Fenton, Jonathan Charles. "Ultrafast measurements of c-axis transport in single crystals of 2212-BSCCO." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252492.

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2

Portier, Fabien. "Etude expérimentale de deux systèmes élastiques bidimensionnels : électrons à la surface de l'hélium superfluide et vortex dans BSCCO (2212)." Paris 6, 2002. http://www.theses.fr/2002PA066461.

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3

Wang, Fang. "Quantum phase transitions and fluctuations in space charge doped one unit-cell Bi2Sr2CaCu2O8+x." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS436.

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La transition supraconducteur-isolant en deux dimensions est une transition de phase quantique continue à la température du zéro absolu provoquée par des paramètres externes tels que le désordre, le champ magnétique ou la concentration de porteurs. De telles transitions ont été induites dans une variété de supraconducteurs bidimensionnels en ajustant différents paramètres externes et étudiées avec une analyse de renormalisation de taille finie. Il y a cependant assez peu d'uniformité dans les résultats car à la fois les systèmes supraconducteurs et les paramètres externes sont divers. Dans cette thèse, nous avons d'abord fabriqué des échantillons BSCCO-2212 d'épaisseur d'une cellule unité et de grande qualité avec la technique de collage anodique, une méthode originale d'exfoliation développée dans notre laboratoire pour préparer des cristaux 2D de haute qualité à partir de matériaux lamellaires massifs. Ensuite, nous avons provoqué la transition supraconducteur-isolant dans les échantillons fabriqués de Bi2.1Sr1.9CaCu2O8+x monocouche par dopage par charge d'espace, qui est une technique efficace de dopage électrostatique à effet de champ. Nous avons déterminé les paramètres critiques associés et développé un moyen fiable d'estimer le dopage dans la région non supraconductrice, un problème crucial et central dans ces matériaux. L'analyse par renormalisation de taille finie donne un dopage critique de 0,057 trous/Cu, une résistance critique de ~ 6.85 kOhm et un produit d'exposant critiques νz ~ 1,57. Ces résultats, ainsi que des travaux antérieurs sur d'autres matériaux, fournissent une image cohérente de la transition supraconducteur-isolant et de sa nature bosonique dans le régime sous-dopé de la supraconductivité émergente dans les supraconducteurs à haute température critique. Ensuite, dans la dernière partie de cette thèse, nous avons également étudié les effets de l'inhomogénéité et des fluctuations sur la transition supraconductrice à l'échelle mésoscopique et nanoscopique à la fois avec des simulations et des mesures de transport. L'utilisation d'un échantillon ultra-mince facilite également l'analyse sur deux fronts. Tout d'abord, en deux dimensions, les phénomènes de fluctuation liés à la transition supraconductrice sont exacerbés, facilitant l'analyse des changements de largeurs. Deuxièmement, les aspects liés à la percolation et au clustering peuvent être facilement simulés et comparés à des modèles analytiques. En particulier, les effets des fluctuations sur le côté surdopé et sous-dopé du diagramme de phase d'une monocouche de BSCCO-2212 sont discutés. Nous avons découvert que le régime de fluctuation dans la partie sous-dopée du diagramme de phase est fondamentalement différent de celui dans la partie où p > 0,19. Nous avons discuté du comportement possible des paires de Cooper liées à nos résultats expérimentaux, ainsi que d'une des théories pouvant l'expliquer (transition BEC-BCS)
The superconductor-insulator transition in two dimensions is a continuous quantum phase transition at absolute zero temperature driven by external parameters like disorder, magnetic field, or carrier concentration. Such transitions have been induced in a variety of two dimensional superconductors by tuning different external parameters and studied with a finite-size scaling analysis. There is however not much uniformity in the findings as both the superconducting systems and the tuning parameters are diverse. In this thesis, we first fabricated high quality of one unit-cell BSCCO-2212 samples with anodic bonding technique, an original method of exfoliation developed in our laboratory for preparing high quality 2D crystals from layered bulk materials. Then we revealed the superconductor-insulator transition in the fabricated one unit-cell Bi2.1Sr1.9CaCu2O8+x by space charge doping, which in an effective field effect electrostatic doping technique. We determined the related critical parameters and develop a reliable way to estimate doping in the non-superconducting region, a crucial and central problem in these materials. Finite-size scaling analysis yields a critical doping of 0.057 holes/Cu, a critical resistance of ~ 6.85 kΩ and a scaling exponent product νz ~ 1.57. These results, together with earlier work in other materials, provide a coherent picture of the superconductor-insulator transition and its bosonic nature in the underdoped regime of emerging superconductivity in high critical temperature superconductors. Then in the latter part of this thesis, we also investigated the effects of inhomogeneity and fluctuations on superconducting transition on mesoscopic and nanoscopic scale both with simulation and with simulations and with analysis of transport measurements. The use of an ultra-thin sample also facilitates analysis on two fronts. Firstly, in two dimensions fluctuation phenomena related to the superconducting transition are exacerbated, making the analysis of changes in widths easier. Secondly aspects related to percolation and clustering can be easily simulated and compared with analytical models. Especially, the effects of fluctuations on the overdoped and underdoped side of the phase diagram of one unit-cell BSCCO-2212 are discussed. We discovered that the fluctuation regime in the underdoped part of the phase diagram is fundamentally different from that in the part where p > 0.19. We discussed the possible behaviour of cooper pairs related to our experimental results, as well as one existing theoretical explanation (BEC-BCStransition)
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Книги з теми "BSCCO-2212"

1

Thomas, Philip James. C-axis transport in 2212-BSCCO single crystals. Birmingham: University of Birmingham, 2001.

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Частини книг з теми "BSCCO-2212"

1

Kasuu, Osamu, Tetsuyuki Kaneko, Kazuhiko Hayashi, Ken-Ichi Sato, and Noriyuki Yoshida. "Characterization of BSCCO-2212 Superconducting Tapes." In Advances in Superconductivity IX, 923–26. Tokyo: Springer Japan, 1997. http://dx.doi.org/10.1007/978-4-431-68473-2_66.

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2

Gorlova, I. G., S. G. Zybtsev, V. Ya Pokrovskii, and V. N. Timofeev. "Fluctuation Phenomena in BSCCO (2212) Whiskers." In Fluctuation Phenomena in High Temperature Superconductors, 113–20. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5536-6_9.

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3

Masuda, Masayoshi, Shinichi Kojima, and Takayuki Nemoto. "Persistency of Superconducting Current in YBCO(123) and BSCCO(2212)." In Advances in Superconductivity VII, 547–50. Tokyo: Springer Japan, 1995. http://dx.doi.org/10.1007/978-4-431-68535-7_122.

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4

Galinski, G. B., G. M. Ozeryansky, and L. R. Motowidlo. "Processing and Properties of BSCCO 2212 Ag and Ag Alloy Multifilament Round Wires." In Advances in Cryogenic Engineering Materials, 617–21. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9059-7_82.

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5

Yamaguchi, Yuji, Hirokazu Tomono, Fumitoshi Iga, and Yoshikazu Nishihara. "Annealing Effects on Vortex Phase Transition of BSCCO-2212 Crystal via Magnetization Measurement." In Advances in Superconductivity VIII, 209–12. Tokyo: Springer Japan, 1996. http://dx.doi.org/10.1007/978-4-431-66871-8_44.

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6

Yamaguchi, Yuji, Arun K. Grover, Fumitoshi Iga, and Yoshikazu Nishihara. "Vortex Phase Diagram near Tc via DC and AC Magnetization of BSCCO-2212 Crystal." In Advances in Superconductivity VII, 205–8. Tokyo: Springer Japan, 1995. http://dx.doi.org/10.1007/978-4-431-68535-7_45.

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7

Doyle, R. A., S. F. W. R. Rycroft, C. D. Dewhurst, D. T. Fuchs, E. Zeldov, T. B. Doyle, T. Tamegai, et al. "Experimental Evaluation of the Role of Geometrical and Surface Barriers in BSCCO-2212 Crystals." In Physics and Materials Science of Vortex States, Flux Pinning and Dynamics, 239–64. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4558-9_9.

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8

Marken, K. R., W. Dai, and S. Hong. "Fabrication of BSCCO-2212 Composite Conductors by Dip Coating and Powder-in-Tube Techniques." In Advances in Cryogenic Engineering Materials, 147–51. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4757-9053-5_20.

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9

Wang, H. B., T. Tachiki, Y. Aruga, Y. Mizugaki, J. Chen, K. Nakajima, T. Yamashita, and P. H. Wu. "Microwave Responses of BSCCO-2212 Intrinsic Josephson Junctions at Frequencies Up to 100 GHz." In Advances in Superconductivity XII, 1108–10. Tokyo: Springer Japan, 2000. http://dx.doi.org/10.1007/978-4-431-66877-0_327.

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10

Dou, S. X., R. K. Wang, M. Ionescu, and H. K. Liu. "Effect of Colony Boundaries, Defects and 2212 Phase on Jc of Ag-Clad BSCCO Tapes." In Advances in Cryogenic Engineering Materials, 671–78. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9059-7_90.

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Тези доповідей конференцій з теми "BSCCO-2212"

1

Barzi, E., D. Turrioni, A. Kikuchi, M. Lamm, A. Rusy, R. Yamada, A. V. Zlobin, et al. "BSCCO-2212 WIRE AND CABLE STUDIES." In ADVANCES IN CRYOGENIC ENGINEERING MATERIALS: Transactions of the International Cryogenic Materials Conference - ICMC, Vol. 54. AIP, 2008. http://dx.doi.org/10.1063/1.2900379.

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2

Gay, Pierre, Christopher J. Stevens, David C. Smith, John F. Ryan, Guang Yang, and J. S. Abell. "Time-resolved optical response in BSCCO-2212." In SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, edited by Davor Pavuna and Ivan Bozovic. SPIE, 1998. http://dx.doi.org/10.1117/12.335912.

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Звіти організацій з теми "BSCCO-2212"

1

Tollestrup, Alvin. Temperature Profile Measurements During Heat Treatment of BSCCO 2212 Coils. Office of Scientific and Technical Information (OSTI), April 2011. http://dx.doi.org/10.2172/1022120.

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2

Campbell, Scott, Terry Holesinger, and Ybing Huang. Homogenous BSCCO-2212 Round Wires for Very High Field Magnets. Office of Scientific and Technical Information (OSTI), June 2012. http://dx.doi.org/10.2172/1045374.

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3

Kennth Marken. Cost Effective Open Geometry HTS MRI System amended to BSCCO 2212 Wire for High Field Magnets. Office of Scientific and Technical Information (OSTI), August 2006. http://dx.doi.org/10.2172/897815.

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4

Hurley, John S. ALTERNATING CURRENT LOSSES IN AG-SHEATHED BSCCO (2212 AND 2223) TAPES AND WIRES AND YBCO (123) COATED CONDUCTORS. Office of Scientific and Technical Information (OSTI), January 2000. http://dx.doi.org/10.2172/795776.

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