Influence of Sm2O3 and La2O3 Additions on the Microstructure and Properties of YBCO Bulk Superconductors Prepared by TSIG Process

Vojtková, Liudmila; Diko, P.; Rajňák, Michal

doi:10.1109/tasc.2018.2797981

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…The measured value of Jc is shown in Figure 5b, values of which were calculated from magnetic loop measurements using the extended Bean mode [28,29]. The Jc-H curve (77K, H∥c-axis) is shown for the drilled single domain SmBCO bulk sample with two different specimens at positions b1 and c1 (the specimens are marked in the inset of Figure 5b).…”

Section: The Superconducting Properties Of the Drilled Single Domain Smbco Bulk Superconductormentioning

confidence: 99%

“…In addition, it appears that beyond the two parallel tangents of the hole, the crystal orientation is along the diameter with normal growth. However, within two parallel tan- The measured value of J c is shown in Figure 5b, values of which were calculated from magnetic loop measurements using the extended Bean mode [28,29]. The J c -H curve (77K, H//c-axis) is shown for the drilled single domain SmBCO bulk sample with two different specimens at positions b1 and c1 (the specimens are marked in the inset of Figure 5b).…”

Section: The Crystal Growth Orientation Analysis Of the Drilled Single Domain Smbco Bulk Superconductormentioning

confidence: 99%

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Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

et al. 2021

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A large drilled single domain SmBa2Cu3O7−δ (SmBCO) bulk superconductor with a diameter of 32 mm and different hole sizes was successfully fabricated using the modified top-seeded infiltration and growth (TSIG) process. The morphology, superconducting properties, and grain boundary orientation growth of the drilled SmBCO samples were investigated. It was found that not only are the properties of the drilled sample equivalent to those of normal SmBCO bulk superconductors, but also the NdBCO seed crystal can be well controlled because of the increase in the specific surface area in the solid phase pellet. In addition, the growth orientation along the tangent direction of the holes was first noticed in the drilled single domain SmBCO bulk superconductor. This conclusion is highly important for the accurate control of the growth temperature of high temperature bulk superconductors.

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Section: The Superconducting Properties Of the Drilled Single Domain Smbco Bulk Superconductormentioning

confidence: 99%

Section: The Crystal Growth Orientation Analysis Of the Drilled Single Domain Smbco Bulk Superconductormentioning

confidence: 99%

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

et al. 2021

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“…In our previous work [20] we showed that RE doping into YBCO single grain bulks can influence both coarsening of Y211 particles and chemical pinning. In this work, the microstructure, contamination from the substrate, and superconducting properties of single grain YBCO bulk superconductors prepared by an IG process were analyzed.…”

Section: Introductionmentioning

confidence: 96%

Influence of Sm₂O₃microalloying and Yb contamination on Y211 particles coarsening and superconducting properties of IG YBCO bulk superconductors

Vojtková

Diko

Kováč

et al. 2018

Supercond. Sci. Technol.

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Single grain YBa 2 Cu 3 O 7−x (YBCO or Y123) bulk superconductors were produced by an infiltration growth process. The solid phase precursor was prepared by solid state synthesis from Y 2 O 3 +BaCuO 2 powders. The influence of the addition of Sm 2 O 3 and YB contamination from the substrate on the microstructure and superconducting properties was analyzed. The dependences of Yb concentration on the distance from the bottom of the samples measured by energy dispersive spectroscopy microanalysis used in conjunction with scanning electron microscopy confirmed the contamination of the samples during the melting stage of the sample preparation. It is shown that the addition of Sm in low concentration and its combination with Yb from the substrate modify the coarsening of the Y211 particles as well as lead to the appearance of a secondary peak effect in the field dependences of the critical current density.

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“…The search for high-temperature superconductivity and novel superconducting mechanisms is one of the most challenging tasks of condensed matter physicists as well as material scientists [1] [2] [3]. The studies on various substitutions in oxide superconducting systems have proven to be of great importance since changes in the critical transition temperature (T c ) are usually observed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Substituting a Fraction of Cu by La on the Transport Properties of YBa2(Cu1&minus;xLax)3O7&minus;δ Superconductor (0 ≤ x ≤ 0.06)

Fouda¹

2018

MSA

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The effect of La doping on the transport properties and superconducting characterizations of YBa 2 Cu 3 O 7−δ was investigated. High quality YBa 2 (Cu 1−x La x) 3 O 7−δ superconductor was synthesized with La content of x = 0.00, 0.02, 0.04 and 0.06. The structure and surface morphology were investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM) measurements. The best superconducting properties can be obtained for substitution of Cu by La concentration within a distinct range (x = 0.02, 0.04). The highest superconducting transition temperature T c (≈90 K), sharpest transition to superconductivity (ΔT = 5 K) and lowest electrical resistivity (ρ = 9.2 μΩ•cm) correspond to the composition with x = 0.02. Depression and degradation of the superconducting state as (x) increases to 0.06 were observed. Excess dopant of La (x = 0.06) results in a strong decoupling of chains and planes whereas optimal La doping (x = 0.02, x = 0.04) accumulates around the grain, beside the effect of hole filling within this range can adopt an alternate route to extensive oxygen anneal.

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Influence of Sm₂O₃ and La₂O₃ Additions on the Microstructure and Properties of YBCO Bulk Superconductors Prepared by TSIG Process

Cited by 8 publications

References 23 publications

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

Influence of Sm₂O₃microalloying and Yb contamination on Y211 particles coarsening and superconducting properties of IG YBCO bulk superconductors

Effect of Substituting a Fraction of Cu by La on the Transport Properties of YBa<sub>2</sub>(Cu<sub>1&minus;x</sub>La<sub>x</sub>)<sub>3</sub>O<sub>7&minus;δ</sub> Superconductor (0 ≤ x ≤ 0.06)

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Influence of Sm2O3 and La2O3 Additions on the Microstructure and Properties of YBCO Bulk Superconductors Prepared by TSIG Process

Cited by 8 publications

References 23 publications

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

Influence of Sm2O3microalloying and Yb contamination on Y211 particles coarsening and superconducting properties of IG YBCO bulk superconductors

Effect of Substituting a Fraction of Cu by La on the Transport Properties of YBa&lt;sub&gt;2&lt;/sub&gt;(Cu&lt;sub&gt;1&amp;minus;x&lt;/sub&gt;La&lt;sub&gt;x&lt;/sub&gt;)&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;7&amp;minus;δ&lt;/sub&gt; Superconductor (0 ≤ x ≤ 0.06)

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Influence of Sm₂O₃ and La₂O₃ Additions on the Microstructure and Properties of YBCO Bulk Superconductors Prepared by TSIG Process

Influence of Sm₂O₃microalloying and Yb contamination on Y211 particles coarsening and superconducting properties of IG YBCO bulk superconductors

Effect of Substituting a Fraction of Cu by La on the Transport Properties of YBa<sub>2</sub>(Cu<sub>1−x</sub>La<sub>x</sub>)<sub>3</sub>O<sub>7−δ</sub> Superconductor (0 ≤ x ≤ 0.06)