Diamond-like carbon film preparation and surface coatings of oxide superconducting and ferroelectric films

Shin Ichi Aoqui; Kenji Ebihara; Yukihiko Yamagata

doi:10.1016/S0008-6223(98)00023-2

Diamond-like carbon film preparation and surface coatings of oxide superconducting and ferroelectric films

Shin Ichi Aoqui, Kenji Ebihara, Yukihiko Yamagata

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

6 Citations (Scopus)

Abstract

Diamond-like carbon (DLC) films as well as amorphous carbon films are investigated as possible passivation and environment protection for YBa₂Cu₃O_7-x (YBCO) oxide superconducting and Pb(Zr_xTi_1-x)O₃ (PZT) ferroelectric thin films. The pulsed laser deposition (PLD) technique was employed to prepare the perovskite oxide films of YBCO and PZT. These film surfaces were coated by the DLC films prepared using the excimer laser ablation method. Optimum deposition condition of the PLD process for the YBCO, PZT and DLC was investigated. In the case of DLC coatings, a graphite target was ablated using a KrF excimer laser of 2-9 J cm^-2 in 200-800 mTorr hydrogen ambient gas. An optical band gap of 2.0 eV was attained on room temperature substrate and high quality superconductivity of the DLC coated YBCO films was kept over 1 month. The PZT film encapsulated by the DLC layer showed no degradation due to aging over 30 days.

Original language	English
Pages (from-to)	591-594
Number of pages	4
Journal	Carbon
Volume	36
Issue number	5-6
DOIs	https://doi.org/10.1016/S0008-6223(98)00023-2
Publication status	Published - Jan 1 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)

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10.1016/S0008-6223(98)00023-2

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title = "Diamond-like carbon film preparation and surface coatings of oxide superconducting and ferroelectric films",

abstract = "Diamond-like carbon (DLC) films as well as amorphous carbon films are investigated as possible passivation and environment protection for YBa2Cu3O7-x (YBCO) oxide superconducting and Pb(ZrxTi1-x)O3 (PZT) ferroelectric thin films. The pulsed laser deposition (PLD) technique was employed to prepare the perovskite oxide films of YBCO and PZT. These film surfaces were coated by the DLC films prepared using the excimer laser ablation method. Optimum deposition condition of the PLD process for the YBCO, PZT and DLC was investigated. In the case of DLC coatings, a graphite target was ablated using a KrF excimer laser of 2-9 J cm-2 in 200-800 mTorr hydrogen ambient gas. An optical band gap of 2.0 eV was attained on room temperature substrate and high quality superconductivity of the DLC coated YBCO films was kept over 1 month. The PZT film encapsulated by the DLC layer showed no degradation due to aging over 30 days.",

author = "Aoqui, {Shin Ichi} and Kenji Ebihara and Yukihiko Yamagata",

year = "1998",

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doi = "10.1016/S0008-6223(98)00023-2",

language = "English",

volume = "36",

pages = "591--594",

journal = "Carbon",

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TY - JOUR

T1 - Diamond-like carbon film preparation and surface coatings of oxide superconducting and ferroelectric films

AU - Aoqui, Shin Ichi

AU - Ebihara, Kenji

AU - Yamagata, Yukihiko

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Diamond-like carbon (DLC) films as well as amorphous carbon films are investigated as possible passivation and environment protection for YBa2Cu3O7-x (YBCO) oxide superconducting and Pb(ZrxTi1-x)O3 (PZT) ferroelectric thin films. The pulsed laser deposition (PLD) technique was employed to prepare the perovskite oxide films of YBCO and PZT. These film surfaces were coated by the DLC films prepared using the excimer laser ablation method. Optimum deposition condition of the PLD process for the YBCO, PZT and DLC was investigated. In the case of DLC coatings, a graphite target was ablated using a KrF excimer laser of 2-9 J cm-2 in 200-800 mTorr hydrogen ambient gas. An optical band gap of 2.0 eV was attained on room temperature substrate and high quality superconductivity of the DLC coated YBCO films was kept over 1 month. The PZT film encapsulated by the DLC layer showed no degradation due to aging over 30 days.

AB - Diamond-like carbon (DLC) films as well as amorphous carbon films are investigated as possible passivation and environment protection for YBa2Cu3O7-x (YBCO) oxide superconducting and Pb(ZrxTi1-x)O3 (PZT) ferroelectric thin films. The pulsed laser deposition (PLD) technique was employed to prepare the perovskite oxide films of YBCO and PZT. These film surfaces were coated by the DLC films prepared using the excimer laser ablation method. Optimum deposition condition of the PLD process for the YBCO, PZT and DLC was investigated. In the case of DLC coatings, a graphite target was ablated using a KrF excimer laser of 2-9 J cm-2 in 200-800 mTorr hydrogen ambient gas. An optical band gap of 2.0 eV was attained on room temperature substrate and high quality superconductivity of the DLC coated YBCO films was kept over 1 month. The PZT film encapsulated by the DLC layer showed no degradation due to aging over 30 days.

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U2 - 10.1016/S0008-6223(98)00023-2

DO - 10.1016/S0008-6223(98)00023-2

M3 - Article

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SN - 0008-6223

VL - 36

SP - 591

EP - 594

JO - Carbon

JF - Carbon

IS - 5-6

ER -

Diamond-like carbon film preparation and surface coatings of oxide superconducting and ferroelectric films

Abstract

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