The effect of Nd(422) addition on the microstructure and superconducting properties of NdBCO thick films on YSZ substrates

Mohamed Moussa; Trevor Shields; John Abell

doi:10.1088/0953-2048/15/10/315

The effect of Nd(422) addition on the microstructure and superconducting properties of NdBCO thick films on YSZ substrates

Mohamed Moussa, Trevor Shields, John Abell

Metallurgy and Materials

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

NdBaCuO screen-printed thick films have been successfully fabricated on yttria stabilized zirconia substrates from precursor powders containing 10 wt% Ba-rich Nd-422 addition. High transition temperatures, T, and sharp superconducting transitions have been found. The processing temperature was reduced either by the addition of 2.5 wt% BaF2 (doped powder) or by low oxygen partial pressures, p(O-2), (0.045, 0.07 and 0.1% O-2 in Ar). Films prepared from doped powders produced dense thick films with T-c = 95 K; however, the microstructure and the superconducting properties of the thick films fabricated from undoped powder processed using low p(O-2) were significantly improved. Textured crystallites have been found on the surface of the films similar to those normally found on the surface of top-seeded melt-textured NdBCO bulk materials.

Original language	English
Pages (from-to)	1467-1473
Number of pages	7
Journal	Superconductor Science & Technology
Volume	15
Issue number	10
Early online date	20 Sept 2002
DOIs	https://doi.org/10.1088/0953-2048/15/10/315
Publication status	Published - 1 Oct 2002

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abstract = "NdBaCuO screen-printed thick films have been successfully fabricated on yttria stabilized zirconia substrates from precursor powders containing 10 wt% Ba-rich Nd-422 addition. High transition temperatures, T, and sharp superconducting transitions have been found. The processing temperature was reduced either by the addition of 2.5 wt% BaF2 (doped powder) or by low oxygen partial pressures, p(O-2), (0.045, 0.07 and 0.1% O-2 in Ar). Films prepared from doped powders produced dense thick films with T-c = 95 K; however, the microstructure and the superconducting properties of the thick films fabricated from undoped powder processed using low p(O-2) were significantly improved. Textured crystallites have been found on the surface of the films similar to those normally found on the surface of top-seeded melt-textured NdBCO bulk materials.",

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AU - Shields, Trevor

AU - Abell, John

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AB - NdBaCuO screen-printed thick films have been successfully fabricated on yttria stabilized zirconia substrates from precursor powders containing 10 wt% Ba-rich Nd-422 addition. High transition temperatures, T, and sharp superconducting transitions have been found. The processing temperature was reduced either by the addition of 2.5 wt% BaF2 (doped powder) or by low oxygen partial pressures, p(O-2), (0.045, 0.07 and 0.1% O-2 in Ar). Films prepared from doped powders produced dense thick films with T-c = 95 K; however, the microstructure and the superconducting properties of the thick films fabricated from undoped powder processed using low p(O-2) were significantly improved. Textured crystallites have been found on the surface of the films similar to those normally found on the surface of top-seeded melt-textured NdBCO bulk materials.

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The effect of Nd(422) addition on the microstructure and superconducting properties of NdBCO thick films on YSZ substrates

Abstract

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