The investigation of magnetic levitation performances of single grain YBCO at different temperatures

Güner, Sait Barış; Çelık, Şükrü; Tomakin, Murat

doi:10.1016/j.jallcom.2017.02.134

Cited by 13 publications

(7 citation statements)

References 37 publications

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“…The ratio of holes that has a smaller diameter than 0.5 mm to the total number of holes (%) B) in the whole YBCO as consistent with the literature. 21,39 As seen in Figure 3 and Table 1, the hole number density in the bottom slice is lower than the middle slice of the YBCO. Therefore, the slight increment in the levitation force mentioned above results from the micro-structural enhancement in the bottom slice of the YBCO.…”

Section: M-slice B-slicementioning

confidence: 85%

“…19 The first solution to overcome this challenge is the top-seeded-melt-growth (TSMG) method, in which a seed is used on the material to be grown with a higher melting temperature than this material. 20,21 During the ongoing studies, the multi-seeded-melt-growth (MSMG) technic has been developed in which more than one seed is used on the material to produce larger-sized singlegrain HTSs in different dimensions and geometries. 18,19,22 Different studies have been performed to enhance the superconducting material properties in addition to the size of the bulk REBCO, such as using a cylindrical 23,24 or pyramid-like 25 buffer layer between the seed and the main material.…”

Section: Introductionmentioning

confidence: 99%

“…The first solution to overcome this challenge is the top‐seeded‐melt‐growth (TSMG) method, in which a seed is used on the material to be grown with a higher melting temperature than this material 20,21 . During the ongoing studies, the multi‐seeded‐melt‐growth (MSMG) technic has been developed in which more than one seed is used on the material to produce larger‐sized single‐grain HTSs in different dimensions and geometries 18,19,22 .…”

Section: Introductionmentioning

confidence: 99%

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Enhancing magnetic levitation and guidance force and weight efficiency of high‐temperature superconducting maglev systems by using sliced bulk YBCO

Abdioglu

Öztürk

Güner

et al. 2023

Int J Applied Ceramic Tech

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We aimed to enhance the magnetic force efficiency of Maglev systems without increasing total weight. For this aim, we divided YBCO bulks into three slices horizontally to utilize the YBCO‐permanent magnetic guideway (PMG) interaction surface as much as possible. We used whole YBCO above PMGs with different magnetic pole directions (PMG‐A and PMG‐B) in two lying positions of transversal and longitudinal and investigated levitation and guidance force performances. It is determined that levitation and guidance forces by using YBCO in transversal lying mode are bigger compared to the longitudinal mode. For sliced YBCO, the maximum levitation force increased by 69% and 78%, while the guidance force enhancements are determined as 212% and 91%, compared to the whole YBCO above PMG‐A and PMG‐B, respectively. The levitation and guidance force density with respect to the total mass of unit a set of slices YBCO increased by 92% and 106%, respectively, compared to the whole YBCO above PMG‐B in transversal mode. Since the higher levitation force and the lower total weight of the onboard unit are important parameters in point of the energy efficiency in Maglev and other levitation applications, the result of this study supplies useful data for the engineers and industrial partners.

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Section: M-slice B-slicementioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhancing magnetic levitation and guidance force and weight efficiency of high‐temperature superconducting maglev systems by using sliced bulk YBCO

Abdioglu

Öztürk

Güner

et al. 2023

Int J Applied Ceramic Tech

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“…The XRD data proving the orthorhombic superconducting phase and heating process of the samples are given in detailed in Ref. [12].…”

Section: Sample Fabricationmentioning

confidence: 99%

“…9,10 For increasing the usage potential of fabricated HTSs, the magnetic force and trapped field properties of these samples should be increased. This can be achieved by producing large dimensional single-grain HTS samples with top-seeded melt growth (TSMG) method, [11][12][13] but there is a limitation in larger dimensions of HTSs because of very long production time due to the low crystal growth rate. 14 For overcoming this problem, the researchers proposed the multiseeded melt growth (MSMG) method 14,15 that allows to obtain samples with large domain and in large dimensions and different geometries within a reasonable production time by using more than one seed at the same time.…”

Section: Introductionmentioning

confidence: 99%

Magnetic levitation force and trapped field properties of multiseeded YBCO with triangular arrangement of seeds

Abdioglu

Güner

Öztürk

et al. 2021

Int J Applied Ceramic Tech

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Although there are studies in literature using different number of seeds with different arrangements, especially line and rectangular, it is seen that there is no detailed study handling the levitation force together with trapped field properties of triangular arrangement of seed in YBCO. Therefore, to further investigate the magnetic properties of seeded YBCO superconductors, we have fabricated cylindrical YBCO (YBa2Cu3O7) superconductors with triangular arrangement of the seeds with different seed distances. Maximum levitation force values were obtained as 39.4 N and 57.1 N, while the maximum guidance force values were obtained as −4.6 N, and −8.7 N, respectively, with single‐seeded and triangular‐seeded samples with seed distance of 14 mm. It was determined that the trapped field, levitation force, and guidance force firstly decreased from the single‐seeded sample to the triangular‐seeded sample with small seed distance and then increased with increasing seed distance. Increased field trapping and levitation force performances in the triangular‐seeded samples with suitable seed distance indicate that the triangular arrangement of seeds is an eligible method to produce larger dimension YBCO samples with bigger shielding current radius and bigger averaged trapped field values.

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Effects of the nano boron doping and permanent magnet on the magnetic levitation and stiffness performance of Sm1.75Ca(2.20−x)BxCu3.4Oy superconducting ceramics

Güler,

Büyükakkaş

2024

Appl. Phys. A

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The investigation of magnetic levitation performances of single grain YBCO at different temperatures

Cited by 13 publications

References 37 publications

Enhancing magnetic levitation and guidance force and weight efficiency of high‐temperature superconducting maglev systems by using sliced bulk YBCO

Enhancing magnetic levitation and guidance force and weight efficiency of high‐temperature superconducting maglev systems by using sliced bulk YBCO

Magnetic levitation force and trapped field properties of multiseeded YBCO with triangular arrangement of seeds

Effects of the nano boron doping and permanent magnet on the magnetic levitation and stiffness performance of Sm1.75Ca(2.20−x)BxCu3.4Oy superconducting ceramics

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