مطالعه ابررسانای Bi1.64Pb0.36Sr2Ca2-xCdxCu3O10ساخته شده به روش سل ـ‌ ژل

نوع مقاله: مقاله پژوهشی کامل

نویسندگان

1 عضو هیأت علمی

2 دانشجو

چکیده

چکیده‌
ابررسانای سرامیکی Bi1.64Pb0.36Sr2Ca2-xCdxCu3O10آلایش یافته با Cd به روش سل ـ ژل ساخته شد. برای تهیه نمونه‌ها، مقدار آلایش کادمیوم از 2/0-0=x و زمان‌های پخت 32، 48، 56 و 64 ساعت انتخاب شدند. برای یافتن دمای شروع واکنش مواد اولیه از ژل خشک شده آنالیز TGA گرفته شد. ریخت‌شناسی و ریزساختار نمونه‌ها توسط XRD و SEM مورد بررسی قرار گرفت. نتایج حاصل از XRD نشان داد که‌ بیشترین درصد فاز 2223-Bi ،برای نمونة با مقدار آلایش تا 02/0=x می‌‌باشد. چگالی جریان بحرانی و دمای بحرانی نمونه‌ها با استفاده از روش چهارمیله‌ای اندازه‌گیری شد که نتایج حاصل از آن‌ها نشان می‌دهد که در زمان پخت 48 ساعت، نمونة با مقدار آلایش 02/0=x دارای بیشترین چگالی جریان بحرانی و دمای بحرانی می‌باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Studying synthesized ‎Bi1.64Pb0.36Sr2Ca2-xCdxCu3O10 superconductor properties using the sol-gel method

نویسندگان [English]

  • ٍٍSeyed Ebrahim Mousavi Ghahfarokhi 1
  • Fatemeh Joola 2
  • Mansoor Farbod 1
2 Student
چکیده [English]

Abstract
The sol-gel technique has been used in the preparation of Cd doped Bi1.64Pb0.36Sr2Ca2-xCdxCu3O10 ceramic superconductors. In this study, the value of doping Cd has been varied from x = 0-0.2 at different annealing times (32, 48, 56 and 64h) for preparing samples. To find the temperature of annealing, TGA analysis has been done from dried gel. Analysis of XDR and SEM has been done to study the morphology and microstructur of samples. The results of XRD indicated that the maximum values of the Bi-2223 phase percent was obtained for sample doped with x = 0.02 Cd. Also, the study of SEM images shows that this sample has a plate like structure which is caused increase in the critical current density. The critical current density and the critical temperature of samples have been measured by four-probe method. The results show that the sample which was doped with x = 0.02 has maximum value of percentage of Bi – 2223 phase, critical current density and critical temperature

کلیدواژه‌ها [English]

  • Bi-based
  • Doping of Cd
  • Sol-gel
  • Morphology
  • XRD
  • Critical current density
  • Critical temperature
[1] I. Matti, The Effect of Various Doping Methods on Superconducting Properties of Pulsed Laser Deposition YBa2Cu3O7-δ Thin Films, Turun yliopisto university of Turku (2011).

[2] X.G. Qiu, High-Temperature Superconductors, Woodhead Publishing Limited (2011).

[3] G. Jasiolek, J. Gorecka, G. Majewskit, S. Yuan, S. Jin, R. Lianng, X-ray characterization of Bi-Pb-Sr-Ca-Cu-O ceramic, Superconductor Science and Technology 3 (1990) 194.

[4] C.W. Chu, J. Bechtold, L. Gao, P.H. Hor Y.Y. Xue, Superconductivity up to 114K in the Bi-Al-Ca-Sr-Cu-O compound system without rare-earth elements, Physical Review Letters 60 (1988) 941.

[5] S.X. Dou, A.J. Liu, M. Bourdillon, N.X. Kviz, C.C. Sorrell, Stability of superconducting phases in Bi-Sr-Ca-Cu-O and the role of Pb doping, Physical Review B 40 (1989) 5266.

[6] M. Zargar Shoushtari, S.E. Mousavi Ghahfarokhi, M. Farbod,The Effect of Cd Doping on Bi-Based Superconductor, Journal of Applied Sciences 8 14 (2008) 2613.

[7] B. Sarkar, Y.S. Reddy, R.G. Sharma, Effect of Sb doping on critical current density in Bi (Pb)-Sr-Ca-Cu-O high Tc superconductors, Physica C 219 (1994) 26.

[8] M. Zargar Shoushtari, A. Bahrami, M. Farbod., The effect of silver doping on the critical current density of Bi-Pb-Sr-Ca-Cu-O ceramic superconductor, physica status solidi C 3 (2006) 2994.

[9] M. Zargar Shoushtari, S.E. Mousavi Ghahfarokhi, A Study of the Magnetic Properties of Bi1.64−xPb0.36CdxSr2Ca2Cu3Oysuperconductor, The Journal of Superconductivity and Novel Magnetism 24 (2011) 1505.

[10] S.E. Mousavi Ghahfarokhiand, M. Zargar Shoushtari, " Structural and Physical Properties of Cd-doped Bi1.64Pbo.36Sr2Ca2-xCdxCu3Oy superconductor", Physica B 405 (2010) 4643.

[11] K. Tanaka, A. Nozue, K. Kamiya, Preparation of (Bi, Pb)-Sr-Ca-Cu-O superconductor by the sol-gel method, Journal of Materials Science 25 3552 (1990).

[12] A.G. Mamalis, D.E. Manolakos, A. Szalay, G. Pantazopoulos, processing of high temperature superconductors at high strain rates, Technomic Publishing Company Inc (2000).

[13] T. Katsuhisa, N. Akiyoshi, K. Kanichi, Preparation of Bi,Pb-Sr-Ca-Cu-O Superconductor by the Sol-Gel method, Journal of materials Science 25 (1990) 3551.

[14] R.S. Liu, W.N. Wang, C.T. Chang, P.T. Wu, Synthesis and characterization of high-Tc Superconducting oxides by the modified citrate gel process. Japanese Journal of Applied Physics 28 (1989) 2155.

[15] A. Tampieri, G. Celotti, S. Lesca, G. Bezzi, T.M.G. La Torretta, G. Magnani, Bi(PB)-Sr-Ca-Cu-O (2223) superconductor prepared by improved sol-gel technique, Journal of the European Ceramic Sosiety 20 (2000) 119.

[16] س.ا. موسوی قهفرخی ، م. زرگر شوشتری، ن. حسین‌زاده، بررسی ابررسانای 2223-  Biآلائیده با نانوذرات CdO، مجله بلورشناسی و کانی شناسی ایران، سال بیست و سوم، شمارة اول، بهار 94.

[17] R. Abd-Shukor, M.M. Awang Kechik, S.A. Halim, Transport critical current density ofBi-Sr-CaCu-O/Ag superconductor tapes with addition of Fe3O4 as flux pinning center, Journal of Physics: Conference Series 97 (2007).

[18] س.ا. موسوی، م. زرگر شوشتری، ابررسانای پایة بیسموت، مجلۀ پژوهش فیزیک ایران، جلد 9، شمارۀ 1 (1388).

[19] I. Hamadneh, A. Agil, A.K. Yahya, S.A. Halim, Superconducting properties of bulk Bi1.6Pb0.4Sr2Ca2-xCdxCu3O10 system prepared via conventional solid state and coprecipitation methods, Physica C 463-465 (2007) 207.

[20] S.E. Mousavi Ghahfarokhi, M. Zargar Shoushtari, The effect of Sb and Pb doping on the critical temperature of the Bi1.6PbxSbySr2Ca2Cu3Oz  superconductor,The Journal of Superconductivity and Novel Magnetism 27 (2014) 1153.