Effects of Europium-Barium Nonstoichiometry in EBCO123 Systems on Transition and Magnetization Properties

• Authors: A. Cigáň , J. Maňka , M. Kopčok , J. Polovková , P. Jurdák , A. Koňakovský
• Languages of publication: EN

Abstracts

EN

We studied the effects of Eu-Ba nonstoichiometry in two series of Eu_{1+x}Ba_{2-x}Cu_3O_{7-δ} and Eu_{1-x}Ba_{2+x}Cu_3O_{7-δ} samples on transition, structural, and magnetic properties. The samples with the nominal composition of 0≤x≤0.07 were synthesized by the solid-state reaction method from Eu_2O_3, BaCO_3, and CuO precursors and sintered at 1050°C for 72 h in flowing oxygen. All the samples show the values of critical temperature T_c, volume density ρ, and maximum volume magnetization M_{max} higher than 90 K, 6.3 g cm^{-3} and 10^4 Am^{-1}, respectively, except for x = 0.07 samples. The Eu-Ba nonstoichiometry in the two series shows different effects on transport, magnetization hystereses, and intergrain properties of the samples.

Keywords

EN

74.72.-h; 74.62.Bf; 74.25.Fy; 74.25.Ha

Discipline

• 74.72.-h: Cuprate superconductors
• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.62.Bf: Effects of material synthesis, crystal structure, and chemical composition(for methods of materials synthesis, see 81.20.-n)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 219-222

Dates

published

2008-01

received

2007-07-09

Contributors

author

A. Cigáň

• Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia

author

J. Maňka

• Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia

author

M. Kopčok

• Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia

author

J. Polovková

• Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia

author

P. Jurdák

• Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia

author

A. Koňakovský

• Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia

References

• 1. A. Hu, M.R. Koblischka, X. Yao, H. Zhou, M, Winter, U. Hartmann, M. Murakami, Supercond. Sci. Technol 19, S580 (2006)
• 2. D.A. Cardwell, N.H. Babu, Y. Shi, K. Iida, Supercond. Sci. Technol 19, S510 (2006)
• 3. V. Zrubec, A. Cigáň, J. Maňka, Physica C 223, 90 (1994)
• 4. M. Murakami, N. Sakai, T. Higuchi, S.I. Yoo, Supercond. Sci. Technol 9, S510 (1996)
• 5. A. Gupta, V.P.S. Awana, S.B. Samanta, H. Kisham, A.V.Narlikar, in: Frontiers in Superconducting Materials, Ed. A.V. Narlikar, Springer, Berlin 2005, p. 49 9

Identifiers

DOI

10.12693/APhysPolA.113.219