Crystallinity and surface morphology of YBCO thin films using an amorphous buffer layer deposited at a low temperature

Yoshitaka Nakamura; Tomitsugu Tsuchihata; Shin Kudo; Tsutomu Kawamata; Masashi Mukaida; Shigetoshi Ohshima

doi:10.1109/TASC.2003.811964

Crystallinity and surface morphology of YBCO thin films using an amorphous buffer layer deposited at a low temperature

Yoshitaka Nakamura, Tomitsugu Tsuchihata, Shin Kudo, Tsutomu Kawamata, Masashi Mukaida, Shigetoshi Ohshima

Research output: Contribution to journal › Conference article › peer-review

Abstract

We have investigated the crystallinity and surface morphology of main YBCO films and buffer layers deposited on an MgO substrate by a low temperature buffer layer deposition technique. A significant improvement in the crystalline quality of the YBCO film is achieved when an amorphous buffer layer of 100 [nm] in thickness on bare MgO substrate annealed at 930 [°C] is crystallized by annealing temperature 950[°C] for 1 hour in an air atmosphere. The surface of main YBCO films has pyramid like large grains when YBCO films have good crystallinity. We confirmed that YBCO films grown on a well-crystallized buffer layer had better crystallinity than ones grown on bare MgO substrate.

Original language	English
Pages (from-to)	2717-2720
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 III
DOIs	https://doi.org/10.1109/TASC.2003.811964
Publication status	Published - Jun 2003
Externally published	Yes
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: Aug 4 2002 → Aug 9 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2003.811964

Cite this

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abstract = "We have investigated the crystallinity and surface morphology of main YBCO films and buffer layers deposited on an MgO substrate by a low temperature buffer layer deposition technique. A significant improvement in the crystalline quality of the YBCO film is achieved when an amorphous buffer layer of 100 [nm] in thickness on bare MgO substrate annealed at 930 [°C] is crystallized by annealing temperature 950[°C] for 1 hour in an air atmosphere. The surface of main YBCO films has pyramid like large grains when YBCO films have good crystallinity. We confirmed that YBCO films grown on a well-crystallized buffer layer had better crystallinity than ones grown on bare MgO substrate.",

author = "Yoshitaka Nakamura and Tomitsugu Tsuchihata and Shin Kudo and Tsutomu Kawamata and Masashi Mukaida and Shigetoshi Ohshima",

year = "2003",

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journal = "IEEE Transactions on Applied Superconductivity",

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T1 - Crystallinity and surface morphology of YBCO thin films using an amorphous buffer layer deposited at a low temperature

AU - Nakamura, Yoshitaka

AU - Tsuchihata, Tomitsugu

AU - Kudo, Shin

AU - Kawamata, Tsutomu

AU - Mukaida, Masashi

AU - Ohshima, Shigetoshi

PY - 2003/6

Y1 - 2003/6

N2 - We have investigated the crystallinity and surface morphology of main YBCO films and buffer layers deposited on an MgO substrate by a low temperature buffer layer deposition technique. A significant improvement in the crystalline quality of the YBCO film is achieved when an amorphous buffer layer of 100 [nm] in thickness on bare MgO substrate annealed at 930 [°C] is crystallized by annealing temperature 950[°C] for 1 hour in an air atmosphere. The surface of main YBCO films has pyramid like large grains when YBCO films have good crystallinity. We confirmed that YBCO films grown on a well-crystallized buffer layer had better crystallinity than ones grown on bare MgO substrate.

AB - We have investigated the crystallinity and surface morphology of main YBCO films and buffer layers deposited on an MgO substrate by a low temperature buffer layer deposition technique. A significant improvement in the crystalline quality of the YBCO film is achieved when an amorphous buffer layer of 100 [nm] in thickness on bare MgO substrate annealed at 930 [°C] is crystallized by annealing temperature 950[°C] for 1 hour in an air atmosphere. The surface of main YBCO films has pyramid like large grains when YBCO films have good crystallinity. We confirmed that YBCO films grown on a well-crystallized buffer layer had better crystallinity than ones grown on bare MgO substrate.

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

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T2 - 2002 Applied Superconductivity Conference

Y2 - 4 August 2002 through 9 August 2002

ER -

Crystallinity and surface morphology of YBCO thin films using an amorphous buffer layer deposited at a low temperature

Abstract

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