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Journal articles on the topic 'Superconducting bulks'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Zhang, Sheng Nan, Xiao Bo Ma, Ji Xing Liu, Jian Qing Feng, Cheng Shan Li, and Ping Xiang Zhang. "Effects of High-Energy Ball Milling Time on the Sintering Process of FeSe Superconductors." Materials Science Forum 848 (March 2016): 657–63. http://dx.doi.org/10.4028/www.scientific.net/msf.848.657.

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FeSe superconducting bulks were prepared with high energy ball milling (HEBM) aided sintering process, within which process, tetragonal β-FeSe superconducting phase could be formed directly with one step sintering process, and the formation of hexagonal δ-FeSe non-superconducting phase was effectively avoided. The influences of HEBM time on the sintering process of FeSe bulks were systematically investigated. With different HEBM time, the phase composition and morphology of precursor powders changed correspondingly, which thus influenced the final phase composition and superconducting properti

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2

Zhang, Yufeng, Chunyan Li, Ziwei Lou, et al. "The Performance of the Two-Seeded GdBCO Superconductor Bulk with the Buffer by the Modified TSMG Method." Micromachines 14, no. 5 (2023): 987. http://dx.doi.org/10.3390/mi14050987.

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The multiseeding technique is a method to grow large-sized REBa2Cu3O7−δ (REBCO, where RE is a rare earth element) high temperature superconducting bulks. However, due to the existence of grain boundaries between seed crystals, the superconducting properties of bulks are not always better than those of single grain bulks. In order to improve the superconducting properties caused by grain boundaries, we introduced buffer layers with a diameter of 6 mm in the growth of GdBCO bulks. Using the modified top-seeded melt texture growth method (TSMG), that is, YBa2Cu3O7−δ (Y123) as the liquid phase sou

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3

Nouailhetas, Quentin, Yiteng Xing, Rémi Dorget, et al. "Characterisation of Large-Sized REBaCuO Bulks for Application in Flux Modulation Machines." Materials 17, no. 15 (2024): 3827. http://dx.doi.org/10.3390/ma17153827.

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High temperature superconductors (HTSs) are enablers of extensive electrification for aircraft propulsion. Indeed, if used in electrical machines, HTS materials can drastically improve their performance in terms of the power-to-weight ratio. Among the different topologies of superconducting electrical machines, a flux modulation machine based on HTS bulks is of interest for its compactness and light weight. Such a machine is proposed in the FROST (Flux-barrier Rotating Superconducting Topology) project led by Airbus to develop new technologies as part of their decarbonization goals driven by i

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4

FUJISHIRO, Hiroyuki. "Magnetization of Superconducting Bulks." TEION KOGAKU (Journal of the Cryogenic Society of Japan) 46, no. 3 (2011): 81–88. http://dx.doi.org/10.2221/jcsj.46.81.

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5

VALIENTE-BLANCO, IGNACIO. "Radial and axial stiffness of superconducting bearings based on YBCO single-domain bulks processed with artificial holes." Superconductor Science and Technology 33, no. 4 (2025): 045010. https://doi.org/10.1088/1361-6668/ab6ebe.

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Superconducting magnetic bearings are becoming more widespread, due to the unique properties they provide. Their efficiency is unparallel, there are no issues such as contact, friction, and wear. They require low or minimal maintenance, no lubrication and they work under extreme conditions (cryogenic temperatures, high vacuum). In this contribution, the influence of geometric properties of superconducting bulks on the performance of superconducting bearingswas studied. The main focus was paid to load capacity, radial and axial stiffnesses. Two samples with a significantly higher aspect ratio c

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6

Cheng, Yanxing, Jun Zheng, Huan Huang, and Zigang Deng. "A reconstructed three-dimensional HTS bulk electromagnetic model considering J _c spatial inhomogeneity and its implementation in a bulks’ combination system." Superconductor Science and Technology 34, no. 12 (2021): 125017. http://dx.doi.org/10.1088/1361-6668/ac336b.

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Abstract High-temperature superconducting (HTS) bulks in HTS Maglev systems are always arrayed in a combination to make full use of the applied magnetic field of the permanent magnet guideway (PMG). An excellent combination scheme improves the overall levitation and guidance performance significantly. In this paper, a three-dimensional (3D) electromagnetic model of the real HTS-PMG maglev system with an HTS bulk array was established. This model comprehensively expresses the influence of various factors on the E – J relationship and the 3D spatial distribution of J c, including internal factor

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7

Imao, Hiroya, Kousuke Matsumoto, and Satoru Kishida. "Preparation of Partial-Melted Sm-Ba-Cu-O Bulk Superconductor." Advances in Science and Technology 47 (October 2006): 165–69. http://dx.doi.org/10.4028/www.scientific.net/ast.47.165.

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We prepared SmBa2Cu3Oy (SmBCO) superconducting bulks by partial melting growth with a top seed. From the results, we found that the SmBCO bulks prepared by melting process showed good superconductivity, where the critical temperature Tc and the temperature transition width ΔT of the bulk were 94K and about 1K, respectively. The as-prepared bulks required annealing at 500°C for 24h to improve the superconductivity. However, the characteristics of the bulks may be improved by more detailed study, for example optimum preparation and annealing conditions.

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8

Douine, Bruno, Kevin Berger, and Nickolay Ivanov. "Characterization of High-Temperature Superconductor Bulks for Electrical Machine Application." Materials 14, no. 7 (2021): 1636. http://dx.doi.org/10.3390/ma14071636.

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High-temperature superconducting (HTS) bulks can be used in electrical applications. Experimental characterization of large-size HTS bulks is a tricky issue. The relevant parameters for their application were directly measured in this study. This paper has three main aims. Firstly, features of YBaCuO bulks are presented. Secondly, an electrical motor application is developed using magnetic field shielding and trapping. Thirdly, the HTS bulks are characterized. Several classical methods were used, which are mainly magnetic methods only available for small samples. The complete penetration magne

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9

Li, Lei, Hong Zhang, Yong Zhao, and Yong Zhang. "MgB2 superconductor prepared by Mg diffusion method with the addition of reduced graphene oxide." International Journal of Modern Physics B 32, no. 24 (2018): 1850268. http://dx.doi.org/10.1142/s0217979218502685.

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The effects of 0–5 wt.% reduced graphene oxide (rGO) addition on the superconducting properties of MgB2 bulks were investigated. We found that the dense and uniform MgB2 bulks were obtained by Mg diffusion method with rGO addition. The superconducting properties of MgB2 improved by the addition of rGO content of less than 2 wt.%. With more than 2 wt.% (including 2 wt.%) of rGO addition, nonsuperconducting phase MgB2C2 appeared and MgO content increased, which resulted in a decline in superconducting properties.

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10

Zhang, Yufeng, Ziwei Lou, Penghe Zhang, Chunyan Li, Jiaying Zhang, and Xiaojuan Zhang. "Flux Pinning Properties of Single-Grain Bulk GdBCO Superconductors Processed by Different Thicknesses of Y123 Liquid Source." Micromachines 13, no. 5 (2022): 701. http://dx.doi.org/10.3390/mi13050701.

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The performance of critical current density of GdBa2Cu3O7−δ (GdBCO or Gd123) superconductor bulk has an important influence on its practical applications. In this work, four single-domain GdBCO superconductor bulks were successfully processed by the modified top-seeded melt-texture growth method. The addition of a YBa2Cu3O7−δ (Y123) liquid source with different thicknesses, 0 mm (S0), 3 mm(S3), 5 mm (S5), 7 mm (S7), was introduced to study the influence on the superconducting properties. GdBCO bulk with the addition of the Y123 liquid source with a 3-mm thickness shows the best superconducting

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11

Mamalis, A. G., I. N. Vottea, D. E. Manolakos, A. Szalay, and A. Kladas. "Numerical Simulation of Explosive Consolidation of Superconducting Bulk Components." International Journal of Modern Physics B 17, no. 18n20 (2003): 3563–67. http://dx.doi.org/10.1142/s0217979203021411.

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The explosive compaction technique has been used for manufacturing bulk superconducting components, e.g. three dimensional plates and axisymmetric billets, rods, discs and tubes, with high density and good electrical and magnetic characteristics. The high pressures and temperatures developed in a very short time result in sintering and in fracturing of the original grains, inducing primarily line defects that would provide flux pinning centers in Type II superconductors. Densified superconducting ceramic YBCO bulk components of various geometries were produced by this dynamic technique and the

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12

Fujimoto, H., H. Shimada, and S. Yoshizawa. "Mechanical properties of DyBaCuO superconducting bulks." Physica C: Superconductivity and its Applications 463-465 (October 2007): 374–78. http://dx.doi.org/10.1016/j.physc.2007.04.235.

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13

Ishibashi, Shinnosuke, Rikako Hagiwara, Sugali Pavan Kumar Naik та ін. "Sharp edged Gd₂BaCuO₅ particles addition effect on growth and properties of top-seeded melt-grown GdBa₂Cu₃O_7-δ bulk superconductors". Journal of Physics: Conference Series 2323, № 1 (2022): 012022. http://dx.doi.org/10.1088/1742-6596/2323/1/012022.

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Abstract We report on top-seeded melt growth of GdBa2Cu3O7-δ (GdBCO) bulks added by sharp edged Gd2BaCuO5 nanoparticles (Gd211U) refined by ultrasonication. GdBCO bulks mixed with 30 mol.% of Gd211U were examined to be grown isothermally at different temperatures in a range of 1015 °C−1035 °C using a top-seeded melt growth technique. Magnetic susceptibility measurements show that all samples become superconducting and especially samples grown at 1020°C and 1025°C have a maximum superconducting transition temperature (T c) of 94.5 K. The critical current density (J c) obtained from magnetic hys

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14

Liao, Hengpei, Weijia Yuan, Zhiwei Zhang, and Min Zhang. "Magnetization mechanism of a hybrid high temperature superconducting trapped field magnet." Journal of Applied Physics 133, no. 2 (2023): 023902. http://dx.doi.org/10.1063/5.0133219.

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This paper studies the magnetization mechanism of a hybrid high temperature superconducting (HTS) trapped field magnet. To address the size limitation of traditional HTS bulk materials, hybridization between HTS-stacked ring magnets and HTS bulks is proposed here. A jointless HTS-stacked ring magnet is used to increase the trapped field area for HTS bulks. A hybrid HTS magnet with 90 mm in length and 60 mm in width was tested to provide a trapped field of 7.35 T in a field cooling magnetization. The paper focuses mainly on understanding the novel magnetization mechanism of this hybrid HTS trap

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15

Douma, Brahim Chelarem, Bilal Abderezzak, Elhadj Ailam, et al. "Design Development and Analysis of a Partially Superconducting Axial Flux Motor Using YBCO Bulks." Materials 14, no. 15 (2021): 4295. http://dx.doi.org/10.3390/ma14154295.

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In this work, authors have designed, constructed and tested a new kind of partially superconducting axial flux machine. This model is based on the magnetic flux concentration principle. The magnetic field creation part consists of the NbTi superconducting solenoid and two YBaCuO plates. A theoretical study is conducted of an extrapolated superconducting inductor for low-temperature superconducting and high-temperature superconducting solenoids. The optimization of the inductor is carried out in order to increase the torque and the power density as well. This improvement is done by changing the

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16

Fujimoto, H., and A. Murakami. "Fracture Toughness Properties of Gd123 Superconducting Bulks." Physics Procedia 36 (2012): 458–62. http://dx.doi.org/10.1016/j.phpro.2012.06.133.

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17

Da Silva, L. B. S., A. Serquis, E. E. Hellstrom, and D. Rodrigues. "Artificial pinning centers in MgB2 superconducting bulks." Superconductor Science and Technology 33, no. 4 (2020): 045013. http://dx.doi.org/10.1088/1361-6668/ab7471.

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18

Zhang, Xing-Yi, Jun Zhou, and You-He Zhou. "Memory effect in the high-temperature superconducting bulks." Physica C: Superconductivity 495 (December 2013): 44–47. http://dx.doi.org/10.1016/j.physc.2013.07.013.

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19

Prikhna, Tatiana A., Myroslav V. Karpets, Vladimir B. Sverdun, et al. "MgB2 Wires and Bulks With High Superconducting Performance." IEEE Transactions on Applied Superconductivity 29, no. 5 (2019): 1–5. http://dx.doi.org/10.1109/tasc.2019.2907662.

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20

Saito, A., N. Sekiya, H. Teshima, et al. "Surface resistance measurement of modified QMG superconducting bulks." Physica C: Superconductivity and its Applications 445-448 (October 2006): 330–33. http://dx.doi.org/10.1016/j.physc.2006.04.076.

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21

Ohsaki, H., Y. Terao, and M. Sekino. "Wind turbine generators using superconducting coils and bulks." Journal of Physics: Conference Series 234, no. 3 (2010): 032043. http://dx.doi.org/10.1088/1742-6596/234/3/032043.

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22

Imao, Hiroya. "Critical Current Density and Pinning Energy of Partial Melted Sm-Based Superconductor." Advances in Science and Technology 95 (October 2014): 169–74. http://dx.doi.org/10.4028/www.scientific.net/ast.95.169.

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The relationship between critical current density (Jc) and pinning energy (Up) in partial melted superconductors was investigated. The partial melted Sm-Ba-Cu-O superconducting bulks were composed of SmBa2Cu3Ox (Sm-123) superconductor and Sm2BaCuOy (Sm-211) insulator. The pinning force and the pinning energy of the superconductor were measured by a system combining an electronic balance and permanent magnet. The pinning energy and the Jc of the samples were influenced by crystalline orientation. The Jc of the samples depends on the pinning energy. However, in the partial melting process, chang

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23

LU, YIYUN, BINGJUAN LU, YUNWANG GE, and WENQING CHEN. "INFLUENCE OF CRITICAL CURRENT DENSITY ON MAGNETIC FORCE OF HTSC BULK ABOVE PMR WITH 3D-MODELING NUMERICAL SOLUTIONS." International Journal of Modern Physics B 25, no. 19 (2011): 2525–32. http://dx.doi.org/10.1142/s0217979211101569.

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Numerical electromagnetic field simulations of high-temperature superconductors (HTSC) bulk were carried out to calculate the magnetic force between the HTSC bulk and the permanent magnet railway (PMR). A 3D-modeling numerical calculation method is proposed using the finite element method. The model is formulated with the magnetic field vector (H-method). The resulting code was written with FORTRAN language. The electric field intensity E and the current density J constitutive relation of HTSC were described with E–J power law. The Kim macro-model is used to describe critical current density J

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24

Zhang, Shengnan, Chengshan Li, Qingbin Hao, Jianqing Feng, Xiaobo Ma, and Pingxiang Zhang. "Influences of Ca nonstoichiometry on the superconducting properties of Bi-2212 superconducting bulks." Journal of Materials Science: Materials in Electronics 26, no. 9 (2015): 7214–22. http://dx.doi.org/10.1007/s10854-015-3347-y.

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25

Wang, Qi, Lei Li, Yong Zhao, Hong Zhang, and Yong Zhang. "The effects of sintering temperature on superconductivity of MgB2 prepared by hot pressing." International Journal of Modern Physics B 34, no. 04 (2020): 2050012. http://dx.doi.org/10.1142/s0217979220500125.

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The [Formula: see text] superconductor bulks were prepared by hot-pressing under the pressure of 55 MPa at different temperatures of 650[Formula: see text]C, 700[Formula: see text]C, 800[Formula: see text]C, 900[Formula: see text]C, 1000[Formula: see text]C, respectively, and the hot-pressing effects on the superconducting properties of [Formula: see text] bulks were investigated. The density of bulk samples increased with the rise of sintering temperature and the density reached to the maximum value when the sintering temperature rose to 1000[Formula: see text]C. For the sample sintered at 10

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26

Diko, Pavel, Xavier Chaud, Vitaliy Antal, et al. "Elimination of Oxygenation Cracking in YBCO Bulk Superconductors." Key Engineering Materials 409 (March 2009): 216–22. http://dx.doi.org/10.4028/www.scientific.net/kem.409.216.

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The reasons for cracking of YBa2Cu3Oδ/Y2BaCuO5 (Y123/Y211 or YBCO) bulk single-grain superconductors are mechanical stresses, which arise in the sample during its fabrication. Two main sources of stresses appearing during fabrication were identified: the different thermal expansion coefficients of 123 and 211 phases and the dependence of 123 phase lattice parameters on the oxygen stoichiometry. As-grown YBCO bulks have low oxygen content, YBa2Cu3O6.3, are not superconducting, and must be oxygenated to form YBa2Cu3O7. During standard oxygenation at 400 °C the shortening of crystal lattice param

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27

Maimaiti, Nuerseman, Abulizi Abulaiti, and Wanmin Yang. "The Effect of Infiltration Temperature on the Microstructure and Magnetic Levitation Force of Single-Domain YBa2Cu3O7-x Bulk Superconductors Grown by a Modified Y+011 IG Method." Nanomaterials 15, no. 1 (2024): 21. https://doi.org/10.3390/nano15010021.

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During the preparation of single-domain (S-D) REBa2Cu3O7-x (RE-123) superconducting bulks, the seed crystals can serve as templates for crystal growth, guiding the newly formed crystals to grow in a specific direction, thereby ensuring the consistency of the crystal orientation within the sample. However, the infiltration temperature is typically restricted to approximately 1050 °C when employing NdBa2Cu3O7-x (Nd-123) crystal seeds in the traditional top-seeded infiltration growth (TSIG) technique for producing single-domain Y-123 bulk superconductors. In the present study, to overcome the tem

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28

Giunchi, Giovanni, Giovanni Ripamonti, Elena Perini, Stefano Ginocchio, Enrico Bassani, and Tommaso Cavallin. "Highly Densified MgB₂ Bulks by Reactive Mg Liquid Infiltration." Advances in Science and Technology 47 (October 2006): 7–16. http://dx.doi.org/10.4028/www.scientific.net/ast.47.7.

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The issues in the conventional sintering of the MgB2 superconductors have conducted to the discovery of a new way to densify this material. The new process is an “in situ” method that relies on the reactive liquid infiltration (RLI) of liquid Magnesium into Boron powders packed preform. The RLI process allows to obtain highly dense manufacts without the use of hot pressing apparatus and can be applied to the manufacture of large superconducting pieces. One of the peculiarities of the MgB2 superconductivity, that withstand up to 39 K, is represented by the relative insensitiveness of the superc

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29

Fujiwara, Yasufumi, Satoshi Hirata, Masahiro Iyori, and Takeshi Kobayashi. "Cathodeluminescence from high Tc superconducting bulks and thin films." Journal of the Japan Society of Powder and Powder Metallurgy 36, no. 5 (1989): 588–91. http://dx.doi.org/10.2497/jjspm.36.588.

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30

Hiramatsu, Y., Y. Takahashi, E. S. Otabe, K. Suzuki, Y. Tanaka, and M. Kiuchi. "Evaluation of Magnetic Cutting and Polishing with Superconducting Bulks." Journal of Physics: Conference Series 871 (July 2017): 012048. http://dx.doi.org/10.1088/1742-6596/871/1/012048.

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31

Kamijo, H., T. Higuchi, H. Fujimoto, H. Ichikawa, and T. Ishigohka. "Flux-trapping characteristics of oxide superconducting bulks in array." IEEE Transactions on Appiled Superconductivity 9, no. 2 (1999): 976–79. http://dx.doi.org/10.1109/77.783461.

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32

Giunchi, Giovanni, Luca Saglietti, Giovanni Ripamonti, Alessandro Figini Albisetti, Enrico Bassani, and Elena Perini. "Superconducting Joints Between ${\hbox {MgB}}_{2}$ Wires and Bulks." IEEE Transactions on Applied Superconductivity 20, no. 3 (2010): 1524–27. http://dx.doi.org/10.1109/tasc.2010.2040260.

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33

Fujimoto, H., and A. Murakami. "Mechanical properties of Gd123 superconducting bulks at 77 K." Superconductor Science and Technology 25, no. 5 (2012): 054017. http://dx.doi.org/10.1088/0953-2048/25/5/054017.

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34

Qi, Ming, Xi Feng Pan, Ping Xiang Zhang, et al. "Fabrication of Nb3Al superconducting bulks by mechanical alloying method." Physica C: Superconductivity 501 (June 2014): 39–43. http://dx.doi.org/10.1016/j.physc.2014.03.017.

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35

DONG, Yangbo, Satoshi UENO, Mochimitsu KOMORI, and Kenichi ASAMI. "Evaluation of Magnetic Levitation Carrier Using Superconducting Magnetic Suspension with Superconducting Coils and Bulks." TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 59, no. 3 (2024): 123–28. http://dx.doi.org/10.2221/jcsj.59.123.

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36

Antončík, Filip, Michal Lojka, Tomáš Hlásek, Ignacio Valiente‐Blanco, José L. Perez‐Diaz, and Ondřej Jankovský. "Artificially perforated single‐grain YBCO bulks: Dependence of superconducting properties on the bulk thickness." Journal of the American Ceramic Society 103, no. 9 (2020): 5169–77. http://dx.doi.org/10.1111/jace.17279.

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37

Menana, Hocine. "Electromagnetic Modeling of Superconducting Bulks in Applied Time-Varying Magnetic Field." Condensed Matter 9, no. 4 (2024): 47. http://dx.doi.org/10.3390/condmat9040047.

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An integrodifferential model formulated in terms of the electric vector potential is developed for the 3D numerical modeling of the electromagnetic field in superconducting bulks, for AC losses evaluation. The Newton Raphson method is applied to accelerate the convergence. The model is validated on a benchmark. The comparison results show the accuracy of the model and its performances in terms of computation time compared to classical approaches.

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38

Guo, You Guang, Jian Xun Jin, Jian Guo Zhu, and Hai Yan Lu. "Performance Analysis of a Linear Motor with HTS Bulk Magnets for Driving a Prototype HTS Maglev Vehicle." Applied Mechanics and Materials 416-417 (September 2013): 33–37. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.33.

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This paper presents the performance analysis of a linear synchronous motor which employs high-temperature superconducting (HTS) bulk magnets on the mover and normal copper windings on the stator. The linear motor is designed to drive a prototype HTS maglev vehicle in which the mover is suspended by the levitation force between HTS bulks on the mover and permanent magnets on the ground. Finite element magnetic field analysis is conducted to calculate the major parameters of the linear motor and an equation is derived to calculate the electromagnetic thrust force. Theoretical calculations are ve

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39

FUNAKI, Kazuo. "Basic Approach to High Tc Superconducting Bulks and Their Applications." TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 28, no. 4 (1993): 183–90. http://dx.doi.org/10.2221/jcsj.28.183.

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40

Baskys, A., A. Patel, S. Hopkins, et al. "Composite superconducting bulks for efficient heat dissipation during pulse magnetization." Journal of Physics: Conference Series 507, no. 1 (2014): 012003. http://dx.doi.org/10.1088/1742-6596/507/1/012003.

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41

Cheng, C. H., H. T. Lin, C. Sorrell, and Y. Zhao. "Theoretical analysis of ac losses in high temperature superconducting bulks." Physica C: Superconductivity and its Applications 463-465 (October 2007): 431–35. http://dx.doi.org/10.1016/j.physc.2007.05.032.

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42

Fujimoto, H. "Mechanical Properties of$rm Y$123/$rm Ag$Superconducting Bulks." IEEE Transactions on Applied Superconductivity 16, no. 2 (2006): 1043–46. http://dx.doi.org/10.1109/tasc.2006.870812.

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43

Xu, Aixia, Yanwei Ma, Xianping Zhang, et al. "Superconducting properties of MgB2 bulks processed in high magnetic fields." Physica C: Superconductivity and its Applications 445-448 (October 2006): 811–13. http://dx.doi.org/10.1016/j.physc.2006.05.032.

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44

Zhang, Sheng Nan, Cheng Shan Li, Qing Bin Hao, Tian Ni Lu, and Ping Xiang Zhang. "Improvements of Superconducting Properties on Bi-2212 Bulks by Element Doping." Materials Science Forum 787 (April 2014): 448–53. http://dx.doi.org/10.4028/www.scientific.net/msf.787.448.

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Bi-2212 bulks have been fabricated by spark plasma sintering technique with the Bi-2212 precursor powders synthesized by co-precipitation process. The Al2O3dopants were added into the precursor powders during the sintering process. The lattice parameters of Bi-2212 increased with Al content, suggesting that Al3+ions entering into the lattice as interstitial ions due to the small ion radii. The carrier concentration has been calculated with measured room temperature thermopower values. The change of carrier concentration can be attributed to the changes of both Al and oxygen contents in the lat

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45

Dorget, Rémi, Quentin Nouailhetas, Alexandre Colle, et al. "Review on the Use of Superconducting Bulks for Magnetic Screening in Electrical Machines for Aircraft Applications." Materials 14, no. 11 (2021): 2847. http://dx.doi.org/10.3390/ma14112847.

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High-Temperature Superconductors (HTS) considerably accelerate the development of superconducting machines for electrical engineering applications such as fully electrical aircraft. This present contribution is an overview of different superconducting materials that can be used as magnetic screens for the inductor of high specific power electrical machines. The impact of the material properties, such as the critical temperature (Tc) and the critical current density (Jc), on the machine performances is evaluated. In addition, the relevance to flux modulation machines of different HTS bulk synth

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46

Shinden, Motoki, Hiroyuki Fujishiro, Keita Takahashi, and Mark D. Ainslie. "Possibility of mechanical fracture of superconducting ring bulks due to thermal stress induced by local heat generation during pulsed-field magnetization." Superconductor Science and Technology 35, no. 4 (2022): 045015. http://dx.doi.org/10.1088/1361-6668/ac5785.

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Abstract During quasi-static magnetization of bulk superconductors using field-cooled magnetization (FCM) from high fields at low temperatures, such bulks are sometimes broken, which is believed to be mainly due to an electromagnetic force—and subsequent stress—larger than the fracture strength. However, a ring bulk can break, even during pulsed field magnetization (PFM), from relatively lower pulsed fields and at relatively higher temperatures. Previous simulation results suggest that the ring bulk should not break due to the electromagnetic force during PFM. In this paper, taking experimenta

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47

Granados, X., S. Iliescu, B. Bozzo, et al. "Magnetic Mapping - A Way to Test and Understand Current Flows in Thin and Bulk Superconductors." Advances in Science and Technology 47 (October 2006): 1–6. http://dx.doi.org/10.4028/www.scientific.net/ast.47.1.

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Nondestructive testing of superconducting blocks and thin films is a worth point in their development and their industrial production. The most intrinsic characteristic to be tested is the critical current, so is the maximum current can be carried in the superconducting state. The measurement of the current flowing through the samples could be done by direct transport experiments but this means using specific samples, and only the mean current may be found. Distribution of current density in the sample is more relevant because it yields the map of inhomogeneity of the samples, and its effect i

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Shao, Botao, Tianzi Yang, Shengnan Zhang, et al. "Annealing Effect of FeSe Superconducting Polycrystalline Bulks in Low Oxygen Atmosphere." IEEE Transactions on Applied Superconductivity 31, no. 8 (2021): 1–5. http://dx.doi.org/10.1109/tasc.2021.3091036.

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Ishigohka, T., H. Ichikawa, A. Ninomiya, H. Kamijo, and H. Fujimoto. "Flux trapping characteristics of YBCO bulks using pulse magnetization [superconducting magnets]." IEEE Transactions on Appiled Superconductivity 11, no. 1 (2001): 1980–83. http://dx.doi.org/10.1109/77.920241.

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Storey, James G., Mathieu Szmigiel, Fergus Robinson, Stuart C. Wimbush, and Rodney A. Badcock. "Stiffness Enhancement of a Superconducting Magnetic Bearing Using Shaped YBCO Bulks." IEEE Transactions on Applied Superconductivity 30, no. 4 (2020): 1–6. http://dx.doi.org/10.1109/tasc.2020.2982884.

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