The effect of Y2Ba4CuWOy addition on the properties of single domain YBCO superconductors by TSIG technique

Chao, Xiaolian; Yang, Wan‐Min; Wan, Feng; Guo, Feng; Li, J.W.; Chen, S.L.

doi:10.1016/j.physc.2013.03.021

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…2(d). This levitation force of 49.2 N is much higher than the 23 N of the single domain of YBCO bulks fabricated using the conventional TSIG process, even with well ball milled Y211 powders [32]. In addition, the trapped field is about 0.4 T (77 K, 0.5 T magnetized by permanent magnets) for the sample S4 fabricated using the new RE+011 TSIG method, which is also much higher than the 0.129 T of the single domain of YBCO bulks fabricated using the conventional TSIG process [33].…”

Section: Resultsmentioning

confidence: 77%

“…In addition, the trapped field is about 0.4 T (77 K, 0.5 T magnetized by permanent magnets) for the sample S4 fabricated using the new RE+011 TSIG method, which is also much higher than the 0.129 T of the single domain of YBCO bulks fabricated using the conventional TSIG process [33]. In order to clarify why the higher levitation force of 49.2 N and trapped field of 0.4 T are obtained in sample S4 fabricated using the new RE+011 TSIG method, and why the lower levitation force of 23 N [32] and trapped field of 0.129 T [33] are measured in the single domain of YBCO bulks fabricated using the conventional TSIG process, the microstructure of the sample was investigated using scanning electron microscopy (SEM) and shown in figure 4.…”

Section: Resultsmentioning

confidence: 91%

“…As we can see from figure 4, there are many Y211 particles distributed in the YBCO matrix, corresponding to the gray/white particles in the image; it is near uniformly distributed in samples S4, whether fabricated using the new RE+011 TSIG method or by the conventional TSIG process [32,33]. It is also found that the average size of the Y211 particles is nearly the same, around 1.0 μm, for samples S4 fabricated using the new RE+011 TSIG method and the conventional TSIG process with well milled Y211 powder [32], but the density of the Y211 particles is too high in the latter, while there is a reasonable density of Y211 particles in the sample S4 fabricated using the new RE+011 TSIG method, as shown in figure 4. It is easy to see that the average size of the Y211 particles in the sample fabricated using the conventional TSIG process is much larger than that of the others [33].…”

Section: Resultsmentioning

confidence: 99%

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A new RE + 011 TSIG method for the fabrication of high quality and large size single domain YBCO bulk superconductors

Yang¹,

Chen²,

Wang

2015

Supercond. Sci. Technol.

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High quality single domain YBCO bulk superconductors, 20 mm in diameter, have been fabricated using a new top seeded infiltration and growth method (called the RE + 011 TSIG method), with a new solid phase (Y2O3 + xBaCuO2) instead of the conventional Y2BaCuO5 solid phase, x = 0, 0.5, 1.0, 1.2, 1.5, 1.8, 2.0, 2.5, 3.0. The effects of different BaCuO2 contents x on the growth morphology, microstructure, and levitation force have been investigated. The results show that the levitation force of the YBCO bulks first increases and then decreases with increasing x, and reaches maximum levitation forces of about 49.2 N (77 K, 0.5 T, with the traditional liquid phase of YBa2Cu3Oy + 3 BaCuO2 + 2 CuO) and 47 N (77.3 K, 0.5 T, with the new liquid phase of Y2O3 + 10 BaCuO2 + 6 CuO) when x = 1.2, which is much higher than that of the samples fabricated with the conventional solid phases (23 N). The average Y2BaCuO5 particle size is about 1 μm, which is much smaller than the 3.4 μm in the samples prepared with the conventional Y2BaCuO5 solid phase; this means that the flux pinning force of the sample can be improved by using the new solid phase. Based on this method, single domain YBCO bulks 40 mm, 59 mm, and 93 mm in diameter have also been fabricated using the TSIG process with the new solid phases (Y2O3 + 1.2BaCuO2). These results indicate that the new TSIG process developed by our lab is a very important and practical method for the fabrication of low cost, large size, and high quality single domain REBCO bulk superconductors.

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Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A new RE + 011 TSIG method for the fabrication of high quality and large size single domain YBCO bulk superconductors

Yang¹,

Chen²,

Wang

2015

Supercond. Sci. Technol.

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“…As we can see from figure 6, the largest levitation force reached 42.8 N in sample (d). Compared with the literature [30,[36][37][38][39][40], this sample displays a relatively higher magnetic levitation force. The detailed and comparative data are summarized in table 1.…”

Section: Levitation Forcementioning

confidence: 57%

The effect of pre-sintering and high-temperature infiltration on the properties of single-domain YBCO bulk superconductors by the Y + 011 top-seeded infiltration growth process

Abulaiti¹,

Yang²,

Wu³

et al. 2022

Supercond. Sci. Technol.

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Top-seeded infiltration growth process (TSIG) is one of the most important methods for the fabrication of single domain REBCO bulk superconductors, the performance of the samples are mainly closely related with quality of the solid phase pellets. In this paper, we report a new way on how to optimize the solid phase pellets and the properties of the single domain REBCO bulks, including sintering of the solid phase pellets (Y2O3 + BaCuO2), infiltrating of the (Ba-Cu-O) liquid phase and the melting growth process. A group of single domain YBCO bulk superconductors with a diameter of 20 mm have been fabricated by the modified RE +011 TSIG method. Both of the levitation force and trapped field of the samples are increasing first and then decreasing with the increasing of sintering times. The largest levitation force 42.8 N and trapped field 0.41 T (77 K, 0.5 T) is obtained in the sample which was sintered at 1000 ℃ for 4.5 hours, which is mainly related with the optimal microstructure of the pre-sintered solid phase pellets and the YBCO bulk. The results indicate that pre-sintering and high temperature infiltration is a very important method to control the microstructure and improve the physical properties of single domain YBCO bulk superconductors.

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A practical processing method for fabrication of single-domain YBCO superconductors using large-sized GdBCO seed crystals

Abulaiti,

Jia-Wei,

Sen-Lin

et al. 2024

J Mater Sci: Mater Electron

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The effect of Y2Ba4CuWOy addition on the properties of single domain YBCO superconductors by TSIG technique

Cited by 5 publications

References 9 publications

A new RE + 011 TSIG method for the fabrication of high quality and large size single domain YBCO bulk superconductors

A new RE + 011 TSIG method for the fabrication of high quality and large size single domain YBCO bulk superconductors

The effect of pre-sintering and high-temperature infiltration on the properties of single-domain YBCO bulk superconductors by the Y + 011 top-seeded infiltration growth process

A practical processing method for fabrication of single-domain YBCO superconductors using large-sized GdBCO seed crystals

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