Comparative study of critical current density, pinning force and levitation force behavior in Yb211 doped-Sm123 bulk superconductors

Öztürk, K.; Akbulut, S.; Kutuk, Sezai; Bolat, Süleyman; Çelık, Şükrü; Başoğlu, M.

doi:10.1016/j.jallcom.2011.12.021

Cited by 20 publications

(4 citation statements)

References 35 publications

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“…In our modelling, the J c ( B ) relation depending on x the doping ratio for doped‐Sm123 samples was based on data obtained by our experimental study, determined before 17. From the VSM magnetization measurement results of the doped Sm123 samples, we used a field‐dependent J c ( B ) relation below, which can be named as extended Kim model 18, 19: where B is magnetic flux density ($B = \mu _{0} \mu _{r} \sqrt {H_{r}^{2} + H_{z}^{2} } $ ); J c0 , B 0 , c , a , b 1 and b 2 are constant parameters dependent on Yb211 doping ratio determined by the property of doped Sm123 samples to reproduce the numerical M ( H ) curve.…”

Section: Numerical Methods and Simulation Resultsmentioning

confidence: 99%

A numerical study to investigate magnetization, current density and trapped field properties of doped‐Sm123 bulk superconductor under different magnetic fields

Öztürk

Patel

Glowacki

2012

Physica Status Solidi (a)

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In this study, an FEM code based on a critical state model is used to further understand the electromagnetic behaviour of Yb211‐doped Sm123 bulk superconductor by calculating the current and magnetic field distributions in doped samples both in uniform and non‐uniform external field conditions. The results of magnetization loops from the numerical modelling have been compared with experimental results and they show a good match. In the numerical calculation result, the highest trapped field value, Bz, is 0.49 T for x = 0.25. In addition, the value of Bz trapped field in a non‐uniform applied field is calculated as 18% larger than in uniform applied field and the current density of samples as a function of radius increase particularly at the sample edge with a non‐uniform applied field for the x = 0.25 sample. It can be said that this numerical method will be a useful candidate to get an easy solution to many electromagnetic problems of doped‐superconductor with complex geometries and in different field conditions as the performed numerical study is successful in clarifying magnetization, trapped field and pinning properties of Yb211‐doped Sm123 superconductor.

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Section: Numerical Methods and Simulation Resultsmentioning

confidence: 99%

A numerical study to investigate magnetization, current density and trapped field properties of doped‐Sm123 bulk superconductor under different magnetic fields

Öztürk

Patel

Glowacki

2012

Physica Status Solidi (a)

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“…Although some advancements have been achieved in improving the flux pinning ability and critical current density of HTS [11,12], the levitation [13] and guidance force values of HTS Maglevs are still mostly far from the technological applications. Also the production cost is very important issue to be taken into account for industrial application in Maglev systems.…”

Section: Introductionmentioning

confidence: 99%

Levitation and guidance force efficiencies of bulk YBCO for different permanent magnetic guideways

Abdioglu

Öztürk

Gedikli

et al. 2015

Journal of Alloys and Compounds

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“…It is known that LRE-Ba-Cu-O (LREBCO, where LRE is a light rare earth element such as Nd, Sm, Eu, or Gd) bulk superconductor materials generally exhibit higher T c values, higher irreversibility fields, as well as higher critical current densities (J c s) in a high external magnetic field than Y-Ba-Cu-O (YBCO) [1][2][3][4], which underlines the outstanding potential of these materials, especially for high field engineering applications. However, because of the higher peritectic decomposition temperature of the LREBa 2 Cu 3 O 7−x (LRE-123) phase and the formation of an LRE/Ba solid solution phase, these materials need to be processed by a hot-seeding technique and under a controlled, reduced oxygen partial pressure atmosphere [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Infiltration growth of Mg-doped Nd–Ba–Cu–O seed crystals for the fabrication of large grain RE–Ba–Cu–O bulk superconductors

Li¹,

Li²,

Deng³

et al. 2013

Supercond. Sci. Technol.

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By employing the infiltration growth (IG) technique, Mg-doped Nd-Ba-Cu-O (NdBCO) seed crystals were successfully prepared through 1 wt% MgO addition both to a Nd 4 Ba 2 Cu 2 O 10 (Nd-422) precursor powder and to a liquid source with the composition Nd 2 O 3 :CuO:BaCuO 2 = 1:6:10. Differential thermal analysis (DTA) results showed that the decomposition temperature of the processed Mg-doped NdBCO crystals increased by about 20 • C compared with the general, Mg-free NdBCO seeds, thus they can be used as generic seed crystals to induce the growth of any RE-Ba-Cu-O (REBCO) single grain. This result is consistent with that observed in melt growth (MG) processed Mg-doped NdBCO crystals. Finally, highly c-axis oriented Gd-Ba-Cu-O (GdBCO) and Y-Ba-Cu-O (YBCO) large grains were successfully grown using the produced seed crystals.

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Comparative study of critical current density, pinning force and levitation force behavior in Yb211 doped-Sm123 bulk superconductors

Cited by 20 publications

References 35 publications

A numerical study to investigate magnetization, current density and trapped field properties of doped‐Sm123 bulk superconductor under different magnetic fields

A numerical study to investigate magnetization, current density and trapped field properties of doped‐Sm123 bulk superconductor under different magnetic fields

Levitation and guidance force efficiencies of bulk YBCO for different permanent magnetic guideways

Infiltration growth of Mg-doped Nd–Ba–Cu–O seed crystals for the fabrication of large grain RE–Ba–Cu–O bulk superconductors

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