Preparation of Strontium Vanadate Sr3V2O8 as Additive to Bi-Based Superconductors

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The phase evolution and properties of strontium vanadate Sr3V2O8 were investigated using different method of preparation: solid state reaction and two wet-route techniques (colloidal route and sol-gel method - polymerized complex route). DTA/TG study showed decomposition temperatures of starting materials and helped to choose processing temperatures. XRD analysis was used to determine phase evolution. Solid state reaction sample contained a small amount of Sr3V2O8 as soon as after the first calcinations, but 100% of Sr3V2O8 did not appear until whole procedure was finished. Colloidal route turned out as an inconvenient method for preparation of pure phase. The final colloidal route sample contained 80% of Sr3V2O8, residual volume corresponded to Sr10V6O25. The most progressive phase evolution was detected in the sol-gel route. Raman an FTIR spectroscopy detected evolution of the first amount of Sr3V2O8 after gel heating at 250°C for 2 hours. The pure strontium vanadate was prepared after heating at 800°C for 2 hours.

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49-54

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October 2006

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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[1] N. Ishikawa, C.J. van der Beek, A. Dunlop, G. Jaskierowicz, P.H. Kes, S. Della-Negra: J. Phys. Soc. Jpn. Vol. 73 (2004), p.2813.

Google Scholar

[2] Y. Zhao, C.H. Cheng, J.S. Wang: Supercond. Sci. Technol. Vol. 18 (2005), p. S43.

Google Scholar

[3] P.E. Kazin, M.A. Uskova, Yu.D. Tretyakov, M. Jansen, S. Scheurell, E. Kemnitz: Physica C Vol. 301 (1998), p.185.

DOI: 10.1016/s0921-4534(98)00172-5

Google Scholar

[4] I.H. Gul, M.A. Rehman, M. Ali, A. Masqsood: Physica C Vol. 432 (2005), p.71.

Google Scholar

[5] K. Nováková, O. Smrčková, D. Sýkorová, P. Vašek: Superlattices Micorstruct. Vol. 21 (1997), p.389.

DOI: 10.1006/spmi.1996.0406

Google Scholar

[6] A. Tampieri, G. Celotti, F. Monteverde, F. El-Tanawy, S.A. Mansour: J. Mat. Sci. Vol. 33 (1998), p.1857.

Google Scholar

[7] A. Grzechnik, P.F. McMillan: J. Solid State Chem. Vol. 132 (1997), p.156.

Google Scholar

[8] W. Carrillo-Cabrera, H.G. von Schnering: Z. Kristallogr. Vol. 205 (1993), p.271.

Google Scholar

[9] H. -Zh. Li, L. -M. Liu, K.P. Reis, A.J. Jacobson: J. Alloys Compd. Vol. 203 (1994), p.181.

Google Scholar

[10] V.A. Fotiev, G.V. Bazuev: Russ. J. Inorg. Chem. Vol. 31 (1986), p. (2079).

Google Scholar

[11] R.S. Roth, T. Negas, L.P. Cook: Phase diagrams for ceramists Vol. IV (1981).

Google Scholar

[12] M.P. Pechini: US Pat. No. 3. 330. 697 (1967).

Google Scholar

[13] M. Kakihana, T. Okubo, M. Arima, Y. Nakamura, M. Yashima, M. Yoshimura: J. Sol gel Sci. Technol. Vol. 12 (1998), p.95.

DOI: 10.1023/a:1008613312025

Google Scholar

[14] M. Kakihana: J. Sol gel Sci. Technol. Vol. 6 (1996), p.7.

Google Scholar

[15] S.G. Cho, P.F. Johnson, R.A. Codrate SR: J. Mat. Sci. Vol. 25 (1990), p.4738.

Google Scholar