Dislocation density and critical current density of Sm1+xBa 2-xCu3Oy films prepared by various fabrication processes

Masashi Miura; Yutaka Yoshida; Yusuke Ichino; Toshinori Ozaki; Yoshiaki Tarai; Kaname Matsumoto; Ataru Ichinose; Shigeru Horii; Masashi Mukaida

doi:10.1143/JJAP.45.L701

Dislocation density and critical current density of Sm_1+xBa _2-xCu₃O_y films prepared by various fabrication processes

Masashi Miura, Yutaka Yoshida, Yusuke Ichino, Toshinori Ozaki, Yoshiaki Tarai, Kaname Matsumoto, Ataru Ichinose, Shigeru Horii, Masashi Mukaida

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

26 Citations (Scopus)

Abstract

Dislocations are effective flux-pinning centers in REBa₂Cu ₃O_y films at a magnetic field. To investigate the relationship between critical current density (J_c) and dislocation density, we discussed the dislocations in conventional pulsed-laser-deposition (PLD)-SmBCO films, vapor-liquid-solid (VLS)-SmBCO films, and low-temperature growth (LTG)-SmBCO films. The LTG-SmBCO and VLS-SmBCO films showed high-J _c at low magnetic fields. From the observation of etch pits, we found that the LTG-SmBCO and VLS-SmBCO films had high-dislocation densities. We speculate that J_c at low-magnetic fields is affected by dislocation density. LTG is effective for increasing dislocation density without deteriorating crystallinity or superconducting properties.

Original language	English
Pages (from-to)	L701-L704
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	45
Issue number	24-28
DOIs	https://doi.org/10.1143/JJAP.45.L701
Publication status	Published - Jul 7 2006

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

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10.1143/JJAP.45.L701

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title = "Dislocation density and critical current density of Sm1+xBa 2-xCu3Oy films prepared by various fabrication processes",

abstract = "Dislocations are effective flux-pinning centers in REBa2Cu 3Oy films at a magnetic field. To investigate the relationship between critical current density (Jc) and dislocation density, we discussed the dislocations in conventional pulsed-laser-deposition (PLD)-SmBCO films, vapor-liquid-solid (VLS)-SmBCO films, and low-temperature growth (LTG)-SmBCO films. The LTG-SmBCO and VLS-SmBCO films showed high-J c at low magnetic fields. From the observation of etch pits, we found that the LTG-SmBCO and VLS-SmBCO films had high-dislocation densities. We speculate that Jc at low-magnetic fields is affected by dislocation density. LTG is effective for increasing dislocation density without deteriorating crystallinity or superconducting properties.",

author = "Masashi Miura and Yutaka Yoshida and Yusuke Ichino and Toshinori Ozaki and Yoshiaki Tarai and Kaname Matsumoto and Ataru Ichinose and Shigeru Horii and Masashi Mukaida",

year = "2006",

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doi = "10.1143/JJAP.45.L701",

language = "English",

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journal = "Japanese Journal of Applied Physics, Part 2: Letters",

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T1 - Dislocation density and critical current density of Sm1+xBa 2-xCu3Oy films prepared by various fabrication processes

AU - Miura, Masashi

AU - Yoshida, Yutaka

AU - Ichino, Yusuke

AU - Ozaki, Toshinori

AU - Tarai, Yoshiaki

AU - Matsumoto, Kaname

AU - Ichinose, Ataru

AU - Horii, Shigeru

AU - Mukaida, Masashi

PY - 2006/7/7

Y1 - 2006/7/7

N2 - Dislocations are effective flux-pinning centers in REBa2Cu 3Oy films at a magnetic field. To investigate the relationship between critical current density (Jc) and dislocation density, we discussed the dislocations in conventional pulsed-laser-deposition (PLD)-SmBCO films, vapor-liquid-solid (VLS)-SmBCO films, and low-temperature growth (LTG)-SmBCO films. The LTG-SmBCO and VLS-SmBCO films showed high-J c at low magnetic fields. From the observation of etch pits, we found that the LTG-SmBCO and VLS-SmBCO films had high-dislocation densities. We speculate that Jc at low-magnetic fields is affected by dislocation density. LTG is effective for increasing dislocation density without deteriorating crystallinity or superconducting properties.

AB - Dislocations are effective flux-pinning centers in REBa2Cu 3Oy films at a magnetic field. To investigate the relationship between critical current density (Jc) and dislocation density, we discussed the dislocations in conventional pulsed-laser-deposition (PLD)-SmBCO films, vapor-liquid-solid (VLS)-SmBCO films, and low-temperature growth (LTG)-SmBCO films. The LTG-SmBCO and VLS-SmBCO films showed high-J c at low magnetic fields. From the observation of etch pits, we found that the LTG-SmBCO and VLS-SmBCO films had high-dislocation densities. We speculate that Jc at low-magnetic fields is affected by dislocation density. LTG is effective for increasing dislocation density without deteriorating crystallinity or superconducting properties.

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JO - Japanese Journal of Applied Physics, Part 2: Letters

JF - Japanese Journal of Applied Physics, Part 2: Letters

IS - 24-28

ER -

Dislocation density and critical current density of Sm_1+xBa _2-xCu₃O_y films prepared by various fabrication processes

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