A study of the properties of the YBa Cu 0 high temperature superconductorm

K. Naukkarinen, K. Arlauskas, Leif Grönberg, Risto Laiho, Jukka Vanhatalo

Research output: Contribution to journalArticleScientificpeer-review

Abstract

High temperature,T c>90 K, superconductivity in YBa2Cu3O7−δ samples was observed from resistivity and magnetic susceptibility measurements. The zero-field-cooled susceptibility of the material was 60 to 100% of the ideal diamagnetic value depending on sample preparation. Structure identification by X-ray diffraction at both 293 and 89 K exhibited the same orthorhombic structure. Scanning tunnelling microscope investigations of the sample surface revealed steep step structure with 10×10 nm2 size crystallites and 5 to 100 nm high terraces. Temperature cycling between 77 and 293 K sometimes led to the appearance of white barium lumps on the surface and in the bulk of the sample causing the transition to the low resistance state at 90 K to disappear.
Original languageEnglish
Pages (from-to)1203-1206
JournalJournal of Materials Science
Volume24
Issue number4
DOIs
Publication statusPublished - 1989
MoE publication typeA1 Journal article-refereed

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Barium
Superconductivity
Magnetic susceptibility
Crystallites
Microscopes
Scanning
X ray diffraction
Temperature
barium copper yttrium oxide

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Naukkarinen, K. ; Arlauskas, K. ; Grönberg, Leif ; Laiho, Risto ; Vanhatalo, Jukka. / A study of the properties of the YBa Cu 0 high temperature superconductorm. In: Journal of Materials Science. 1989 ; Vol. 24, No. 4. pp. 1203-1206.
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abstract = "High temperature,T c>90 K, superconductivity in YBa2Cu3O7−δ samples was observed from resistivity and magnetic susceptibility measurements. The zero-field-cooled susceptibility of the material was 60 to 100{\%} of the ideal diamagnetic value depending on sample preparation. Structure identification by X-ray diffraction at both 293 and 89 K exhibited the same orthorhombic structure. Scanning tunnelling microscope investigations of the sample surface revealed steep step structure with 10×10 nm2 size crystallites and 5 to 100 nm high terraces. Temperature cycling between 77 and 293 K sometimes led to the appearance of white barium lumps on the surface and in the bulk of the sample causing the transition to the low resistance state at 90 K to disappear.",
author = "K. Naukkarinen and K. Arlauskas and Leif Gr{\"o}nberg and Risto Laiho and Jukka Vanhatalo",
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A study of the properties of the YBa Cu 0 high temperature superconductorm. / Naukkarinen, K.; Arlauskas, K.; Grönberg, Leif; Laiho, Risto; Vanhatalo, Jukka.

In: Journal of Materials Science, Vol. 24, No. 4, 1989, p. 1203-1206.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - A study of the properties of the YBa Cu 0 high temperature superconductorm

AU - Naukkarinen, K.

AU - Arlauskas, K.

AU - Grönberg, Leif

AU - Laiho, Risto

AU - Vanhatalo, Jukka

PY - 1989

Y1 - 1989

N2 - High temperature,T c>90 K, superconductivity in YBa2Cu3O7−δ samples was observed from resistivity and magnetic susceptibility measurements. The zero-field-cooled susceptibility of the material was 60 to 100% of the ideal diamagnetic value depending on sample preparation. Structure identification by X-ray diffraction at both 293 and 89 K exhibited the same orthorhombic structure. Scanning tunnelling microscope investigations of the sample surface revealed steep step structure with 10×10 nm2 size crystallites and 5 to 100 nm high terraces. Temperature cycling between 77 and 293 K sometimes led to the appearance of white barium lumps on the surface and in the bulk of the sample causing the transition to the low resistance state at 90 K to disappear.

AB - High temperature,T c>90 K, superconductivity in YBa2Cu3O7−δ samples was observed from resistivity and magnetic susceptibility measurements. The zero-field-cooled susceptibility of the material was 60 to 100% of the ideal diamagnetic value depending on sample preparation. Structure identification by X-ray diffraction at both 293 and 89 K exhibited the same orthorhombic structure. Scanning tunnelling microscope investigations of the sample surface revealed steep step structure with 10×10 nm2 size crystallites and 5 to 100 nm high terraces. Temperature cycling between 77 and 293 K sometimes led to the appearance of white barium lumps on the surface and in the bulk of the sample causing the transition to the low resistance state at 90 K to disappear.

U2 - 10.1007/BF02397048

DO - 10.1007/BF02397048

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JO - Journal of Materials Science

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