AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials

A. Veneva; D. K. Petrov; P. Dittrich; M. J. Naughton

doi:10.1016/S0921-4534(96)00560-6

AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials

A. Veneva, D. K. Petrov, P. Dittrich, M. J. Naughton

研究成果: Article › 査読

6 被引用数 (Scopus)

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In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y_1-0.2xBa_2-0.2xK_xCu₃O_y (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-_0.2xBa_2-0.2xK_xCu₃O_y batch was found to improve the Josephson coupling between the grains.

本文言語	English
ページ（範囲）	230-234
ページ数	5
ジャーナル	Physica C: Superconductivity and its applications
巻	271
号	3-4
DOI	https://doi.org/10.1016/S0921-4534(96)00560-6
出版ステータス	Published - 1996 11月 10
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
エネルギー工学および電力技術
電子工学および電気工学

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10.1016/S0921-4534(96)00560-6

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title = "AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials",

abstract = "In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.",

keywords = "AC susceptibility of superconductors, Critical current density, Grain boundaries, Microstructure, Substitution effects, Weak links",

author = "A. Veneva and Petrov, {D. K.} and P. Dittrich and Naughton, {M. J.}",

note = "Funding Information: This work is supported in part by the New York State Institute on Superconductivity under a grant by the New York State Research and Development Agency.",

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T1 - AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials

AU - Veneva, A.

AU - Petrov, D. K.

AU - Dittrich, P.

AU - Naughton, M. J.

N1 - Funding Information: This work is supported in part by the New York State Institute on Superconductivity under a grant by the New York State Research and Development Agency.

PY - 1996/11/10

Y1 - 1996/11/10

N2 - In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.

AB - In this work we report experimental results concerning the influence of potassium and excess copper additions on the AC complex susceptibility and microstructural development within polycrystalline YBCO high-temperature superconductors with nominal composition Y1-0.2xBa2-0.2xKxCu3Oy (x = 0-1.20). The real (X′) and the imaginary (X″) parts of the complex magnetic susceptibility of YBCO were recorded as a function of the temperature at various magnetic fields up to 10 Oe. From these data the intergranular critical current densities were calculated using Bean's critical state model. A proper concentration x, which is approximately equal to x = 0.40 in the initial Y1-0.2xBa2-0.2xKxCu3Oy batch was found to improve the Josephson coupling between the grains.

KW - AC susceptibility of superconductors

KW - Critical current density

KW - Grain boundaries

KW - Microstructure

KW - Substitution effects

KW - Weak links

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EP - 234

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

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AC susceptibility and microstructure of alkali doped polycrystalline YBCO HTSC materials

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