Partially-oriented MgB2 superconducting bulks with addition of B4C and cubic BN obtained by slip casting under high magnetic field and spark plasma sintering

M. A. Grigoroscuta; G. Aldica; I. Pasuk; M. Burdusel; V. Sandu; A. Kuncser; T. S. Suzuki; O. Vasylkiv; P. Badica

doi:10.1016/j.materresbull.2020.111103

Partially-oriented MgB₂ superconducting bulks with addition of B₄C and cubic BN obtained by slip casting under high magnetic field and spark plasma sintering

M. A. Grigoroscuta, G. Aldica, I. Pasuk, M. Burdusel, V. Sandu, A. Kuncser, T. S. Suzuki, O. Vasylkiv, P. Badica

Research output: Contribution to journal › Article › peer-review

Abstract

Partially-oriented MgB₂ bulk discs (13 and 9 %) with the starting compositions of (MgB₂)_0.99(B₄C)_0.01 and (MgB₂)_0.99(c-BN)_0.01 were fabricated by slip casting under an H₀ = 12 T magnetic field (perpendicular to the disc surface) and subsequent spark plasma sintering. The maximum critical current density and irreversibility field are for H//H₀ (H=applied field). These values are higher or similar to the randomly-oriented samples with the same composition. The maximum volume pinning force (F_p) is lower in the partially-oriented ones than in the randomly-oriented samples. The pinning-force-related parameters depend on the additive and orientation. Assessment of the major pinning mechanism within the scaling and percolation models considering these parameters shows significant limitations. A method to scale F_p is proposed; for the randomly and partially-oriented samples (that show an extra peak in F_p), the single and double Gaussian functions fit well. The results suggest an anisotropic influence of carbon substituting for boron in the MgB₂.

Original language	English
Article number	111103
Journal	Materials Research Bulletin
Volume	134
DOIs	https://doi.org/10.1016/j.materresbull.2020.111103
Publication status	Published - 2021 Feb
Externally published	Yes

Keywords

BC and c-BN additions
c-axis texture
Critical current density
MgB
Pinning force

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.materresbull.2020.111103

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Grigoroscuta, M. A., Aldica, G., Pasuk, I., Burdusel, M., Sandu, V., Kuncser, A., Suzuki, T. S., Vasylkiv, O., & Badica, P. (2021). Partially-oriented MgB₂ superconducting bulks with addition of B₄C and cubic BN obtained by slip casting under high magnetic field and spark plasma sintering. Materials Research Bulletin, 134, [111103]. https://doi.org/10.1016/j.materresbull.2020.111103

Partially-oriented MgB₂ superconducting bulks with addition of B₄C and cubic BN obtained by slip casting under high magnetic field and spark plasma sintering. / Grigoroscuta, M. A.; Aldica, G.; Pasuk, I.; Burdusel, M.; Sandu, V.; Kuncser, A.; Suzuki, T. S.; Vasylkiv, O.; Badica, P.

In: Materials Research Bulletin, Vol. 134, 111103, 02.2021.

Research output: Contribution to journal › Article › peer-review

Grigoroscuta, MA, Aldica, G, Pasuk, I, Burdusel, M, Sandu, V, Kuncser, A, Suzuki, TS, Vasylkiv, O & Badica, P 2021, 'Partially-oriented MgB₂ superconducting bulks with addition of B₄C and cubic BN obtained by slip casting under high magnetic field and spark plasma sintering', Materials Research Bulletin, vol. 134, 111103. https://doi.org/10.1016/j.materresbull.2020.111103

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title = "Partially-oriented MgB2 superconducting bulks with addition of B4C and cubic BN obtained by slip casting under high magnetic field and spark plasma sintering",

abstract = "Partially-oriented MgB2 bulk discs (13 and 9 %) with the starting compositions of (MgB2)0.99(B4C)0.01 and (MgB2)0.99(c-BN)0.01 were fabricated by slip casting under an H0 = 12 T magnetic field (perpendicular to the disc surface) and subsequent spark plasma sintering. The maximum critical current density and irreversibility field are for H//H0 (H=applied field). These values are higher or similar to the randomly-oriented samples with the same composition. The maximum volume pinning force (Fp) is lower in the partially-oriented ones than in the randomly-oriented samples. The pinning-force-related parameters depend on the additive and orientation. Assessment of the major pinning mechanism within the scaling and percolation models considering these parameters shows significant limitations. A method to scale Fp is proposed; for the randomly and partially-oriented samples (that show an extra peak in Fp), the single and double Gaussian functions fit well. The results suggest an anisotropic influence of carbon substituting for boron in the MgB2.",

keywords = "BC and c-BN additions, c-axis texture, Critical current density, MgB, Pinning force",

author = "Grigoroscuta, {M. A.} and G. Aldica and I. Pasuk and M. Burdusel and V. Sandu and A. Kuncser and Suzuki, {T. S.} and O. Vasylkiv and P. Badica",

note = "Funding Information: The authors gratefully acknowledge the financial support from MCI-UEFISCDI Romania through Core Program PN19-03 (contract no. 21 N/08.02.2019), project POC 37_697 no. 28/01.09.2016 REBMAT, and COFUND-M-ERA.NET II , 74/2017 BIOMB. MAG also acknowledges Project PFE12/2019, the internship fellowship at NIMS, the JECS Trust Contract 2018 186-01 (International Students Exchange program Grant to participate in the January 2020 Winter Workshop, Daytona-Beach, US) and the support from the Operational Programme Human Capital of the Ministry of European Funds through the Financial Agreement 51668/09.07.2019 , SMIS code 124705. ",

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doi = "10.1016/j.materresbull.2020.111103",

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T1 - Partially-oriented MgB2 superconducting bulks with addition of B4C and cubic BN obtained by slip casting under high magnetic field and spark plasma sintering

AU - Grigoroscuta, M. A.

AU - Aldica, G.

AU - Pasuk, I.

AU - Burdusel, M.

AU - Sandu, V.

AU - Kuncser, A.

AU - Suzuki, T. S.

AU - Vasylkiv, O.

AU - Badica, P.

N1 - Funding Information: The authors gratefully acknowledge the financial support from MCI-UEFISCDI Romania through Core Program PN19-03 (contract no. 21 N/08.02.2019), project POC 37_697 no. 28/01.09.2016 REBMAT, and COFUND-M-ERA.NET II , 74/2017 BIOMB. MAG also acknowledges Project PFE12/2019, the internship fellowship at NIMS, the JECS Trust Contract 2018 186-01 (International Students Exchange program Grant to participate in the January 2020 Winter Workshop, Daytona-Beach, US) and the support from the Operational Programme Human Capital of the Ministry of European Funds through the Financial Agreement 51668/09.07.2019 , SMIS code 124705.

PY - 2021/2

Y1 - 2021/2

N2 - Partially-oriented MgB2 bulk discs (13 and 9 %) with the starting compositions of (MgB2)0.99(B4C)0.01 and (MgB2)0.99(c-BN)0.01 were fabricated by slip casting under an H0 = 12 T magnetic field (perpendicular to the disc surface) and subsequent spark plasma sintering. The maximum critical current density and irreversibility field are for H//H0 (H=applied field). These values are higher or similar to the randomly-oriented samples with the same composition. The maximum volume pinning force (Fp) is lower in the partially-oriented ones than in the randomly-oriented samples. The pinning-force-related parameters depend on the additive and orientation. Assessment of the major pinning mechanism within the scaling and percolation models considering these parameters shows significant limitations. A method to scale Fp is proposed; for the randomly and partially-oriented samples (that show an extra peak in Fp), the single and double Gaussian functions fit well. The results suggest an anisotropic influence of carbon substituting for boron in the MgB2.

AB - Partially-oriented MgB2 bulk discs (13 and 9 %) with the starting compositions of (MgB2)0.99(B4C)0.01 and (MgB2)0.99(c-BN)0.01 were fabricated by slip casting under an H0 = 12 T magnetic field (perpendicular to the disc surface) and subsequent spark plasma sintering. The maximum critical current density and irreversibility field are for H//H0 (H=applied field). These values are higher or similar to the randomly-oriented samples with the same composition. The maximum volume pinning force (Fp) is lower in the partially-oriented ones than in the randomly-oriented samples. The pinning-force-related parameters depend on the additive and orientation. Assessment of the major pinning mechanism within the scaling and percolation models considering these parameters shows significant limitations. A method to scale Fp is proposed; for the randomly and partially-oriented samples (that show an extra peak in Fp), the single and double Gaussian functions fit well. The results suggest an anisotropic influence of carbon substituting for boron in the MgB2.

KW - BC and c-BN additions

KW - c-axis texture

KW - Critical current density

KW - MgB

KW - Pinning force

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