The Effect of KClO3 Addition on the Superconducting Properties and Microstructure of YBCO HTSC Materials

Veneva, A.; Sakai, Naomichi; Waki, Koichiro; Murakami, Masato

doi:10.1007/978-4-431-66874-9_158

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“…The observed peculiarities in the superconducting properties, resulting from adding KClO 3 could be explained by changes in the microstructural morphology (grain size and grain boundaries) of the polycrystalline HTSC YBCO materials during the process of preparation. Therefore, microstructures of the samples were investigated [15]. The grain size of the pure YBCO sample was 28 µm; while the doped samples (x = 0.10-0.40) reached 40-45 µm.…”

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confidence: 99%

Magnetic properties of KClO₃-doped Y_(1-0.2x)Ba_(2-0.2x)K_xCu₃O_y, (x= 0-0.40) HTSC

Koblischka-Veneva

Koblischka

Ogasawara

et al. 2000

Supercond. Sci. Technol.

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The influence of KClO 3 addition on the magnetic properties and microstructural parameters (grain size, grain boundaries) of high-temperature superconductors (HTSC) with nominal composition Y (1−0.2x) Ba (2−0.2x) K x Cu 3 O y (x = 0-0.40) were investigated. The ac complex susceptibility χ ac = χ − iχ was recorded as a function of temperature and concentration of KClO 3 at various ac magnetic fields up to 2 mT. The data were analysed using the relation h = a(1 − T m /T c ) n , where T m represents the intergranular peak temperature of the imaginary component χ . The value of a is found to increase for doped samples, which suggests enhanced flux pinning due to the KClO 3 addition. The dc susceptibility as a function of temperature was measured by means of a SQUID magnetometer in field-cooled cooling (FCC) and field-cooled warming (FCW) modes in magnetic fields in the range 10 mT µ 0 H a 7 T on KClO 3 -doped and pure YBCO samples. The Meissner curves reveal that the samples are single phase in all applied fields, but the low-temperature behaviour of the samples with KClO 3 additions is different from that of pure YBCO.

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Section: Resultsmentioning

confidence: 99%

Magnetic properties of KClO₃-doped Y_(1-0.2x)Ba_(2-0.2x)K_xCu₃O_y, (x= 0-0.40) HTSC

Koblischka-Veneva

Koblischka

Ogasawara

et al. 2000

Supercond. Sci. Technol.

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The Effect of KClO3 Addition on the Superconducting Properties and Microstructure of YBCO HTSC Materials

Cited by 1 publication

References 8 publications

Magnetic properties of KClO₃-doped Y_(1-0.2x)Ba_(2-0.2x)K_xCu₃O_y, (x= 0-0.40) HTSC

Magnetic properties of KClO₃-doped Y_(1-0.2x)Ba_(2-0.2x)K_xCu₃O_y, (x= 0-0.40) HTSC

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The Effect of KClO3 Addition on the Superconducting Properties and Microstructure of YBCO HTSC Materials

Cited by 1 publication

References 8 publications

Magnetic properties of KClO3-doped Y(1-0.2x)Ba(2-0.2x)KxCu3Oy, (x= 0-0.40) HTSC

Magnetic properties of KClO3-doped Y(1-0.2x)Ba(2-0.2x)KxCu3Oy, (x= 0-0.40) HTSC

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Magnetic properties of KClO₃-doped Y_(1-0.2x)Ba_(2-0.2x)K_xCu₃O_y, (x= 0-0.40) HTSC

Magnetic properties of KClO₃-doped Y_(1-0.2x)Ba_(2-0.2x)K_xCu₃O_y, (x= 0-0.40) HTSC