• 제목/요약/키워드: Co ultra thin film

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공증착법으로 제작한 BSCCO 초전도 박막의 부착계수 해석 (Analysis of Sticking Coefficient in BSCCO Superconductor Thin Film Fabricated by Co-deposition)

  • 안인순;천민우;박용필
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2001년도 추계학술대회 논문집 Vol.14 No.1
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    • pp.300-303
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    • 2001
  • BSCCO thin films are fabricated via a co-deposition process by an ion beam sputtering with an ultra-low growth rate, and sticking coefficients of the respective elements are evaluated. The sticking coefficient of Bi element exhibits a characteristic temperature dependence : almost a constant value of 0.49 below $730^{\circ}C$ and decreases linearly with temperature over $730^{\circ}C$. This temperature dependence can be elucidated from the evaporation and sublimation rates of bismuth oxide, $Bi_{2}O_{3}$, from the film surface. It is considered that the liquid phase of the bismuth oxide plays an important role in the Bi 2212 phase formation in the co-deposition process.

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Evaluation of Sticking Coefficient in BSCCO Thin Film Fabricated by Co-sputtering

  • Lee, Hee-Kab;Park, Yong-Pil;Lee, Kwon-Hyun;Lee, Joon-Ung
    • 한국전기전자재료학회논문지
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    • 제13권1호
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    • pp.80-84
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    • 2000
  • BSCCO thin films are fabricated via a co-deposition process by an ion beam sputtering with an ultra-low growth rate, and sticking coefficients of the respective elements are evaluated. The sticking coeffi-cient of Bi element exhibits a characteristic temperature dependence : almost a constant value of 0.49 below 73$0^{\circ}C$ and decreases linearly with temperature over 73$0^{\circ}C$. This temperature dependence can be elucidated from the evaporation and sublimation rates of bismuth oxide, Bi\ulcornerO\ulcorner, from the film surface. It is considered that the liquid phase of the bismuth oxide plays an important role in the Bi(2212) phase formation in the co-deposition process.

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공증착법으로 제작한 BSCCO 초전도 박막의 부착계수 해석 (Analysis of Sticking Coefficient in BSCCO Superconductor Thin Film Fabricated by Co-deposition)

  • 안인순;천민우;박용필
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2001년도 추계학술대회 논문집
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    • pp.300-303
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    • 2001
  • BSCCO thin films are fabricated via a co-deposition process by an ion beam sputtering with an ultra-low growth rate, and sticking coefficients of the respective elements are evaluated. The sticking coefficient of Bi element exhibits a characteristic temperature dependence : almost a constant value of 0.49 below 730$^{\circ}C$ and decreases linearly with temperature over 730$^{\circ}C$. This temperature dependence can be elucidated from the evaporation and sublimation rates of bismuth oxide, Bi$_2$O$_3$, from the film surface. It is considered that the liquid phase of the bismuth oxide plays an important role in the Bi 2212 phase formation in the co-deposition process.

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Bi-sticking Coefficient of Bi-superconducting Thin Film Prepared by IBS Method

  • Lee, Hee-Kab;Lee, Joon-Ung;Park, Yong-Pil
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1999년도 추계학술대회 논문집
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    • pp.213-216
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    • 1999
  • BSCCO thin films are fabricated via a co-deposition process by an ion beam sputtering with an ultra-low growth rate, and sticking coefficients of the respective elements are evaluated. The sticking coefficient of Bi element exhibits a characteristics temperature dependence : almost a constant value of 0.49 below 730$^{\circ}C$ and decreases linearly with temperature over 730$^{\circ}C$. This temperature dependence can be elucidated from the evaporation and sublimation rates of bismuth oxide, Bi$_2$O$_3$ from the film surface. It is considered that the liquid phase of the bismuth oxide plays an important role in the Bi(2212) phase formation in the co-deposition process.

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Characteristics of Bi-superconducting Thin Films Prepared by Co- and Layer-by-Layer Deposition

  • Yang, Sung-Ho;Park, Yong-Pil
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2000년도 제2회 학술대회 논문집 일렉트렛트 및 응용기술전문연구회
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    • pp.40-44
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    • 2000
  • $Bi_2Sr_2Ca_nCu_{n+1}O_y$($n{\geq}0$; BSCCO)thin film is fabricated via two different processes using an ion beam sputtering method i.e. co-deposition and layer-by-layer deposition. A single phase of Bi2212 can be fabricated via the co-deposition process. While it cannot be obtained by the layer-by-layer process. Ultra-low growth rate in our ion beam sputtering system brings out the difference in Bi element adsorption between the two processes and results in only 30% adsorption against total incident Bi amount by layer-by-layer deposition, in contrast to enough Bi adsorption by co-deposition.

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Comparison between Bi-superconducting Thin Films Fabricated by Co-Deposition and Layer-by-Layer Deposition

  • Yang, Sung-Ho;Park, Yong-Pil
    • 한국전기전자재료학회논문지
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    • 제13권9호
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    • pp.796-800
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    • 2000
  • Bi$_2$Sr$_2$Ca$_{n}$Cu$_{n+1}$ O$_{y}$(n$\geq$0; BSCCO) thin film is fabricated via two different processes using an ion beam sputtering method i.e. co-deposition and layer-by-layer deposition. A single phase of Bi2212 can be fabricated via the co-deposition process. While it cannot be obtained by the layer-by-layer process. Ultra-low growth rate in our ion beam sputtering system brings out the difference in Bi element adsorption between the two processes and results in only 30% adsorption against total incident Bi amount by layer-by-layer deposition, in contrast to enough Bi adsorption by co-deposition.on.n.

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Comparison between BSCCO Thin Films Fabricated by Co-Deposition and Layer-by-Layer Deposition

  • Lee, Hee-Kab;Park, Yong-Pil;Lee, Joon-Ung
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2000년도 하계학술대회 논문집
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    • pp.230-234
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    • 2000
  • Bi$_2$Sr$_2$Ca$_{n}$Cu$_{n+1}$ O$_{y}$(n$\geq$0; BSCCO)thin film is fabricated via two different processes using an ion beam sputtering method i.e. co-deposition and layer-by-layer deposition. A single phase of Bi2212 can be fabricated via the co-deposition process. While it cannot be obtained by the layer-by-layer process. Ultra-law growth rate in our ion beam sputtering system brings out the difference in Bi element adsorption between the two processes and results in only 30% adsorption against total incident Bi amount by layer-by-layer deposition, in contrast to enough Bi adsorption by co-deposition.on.n.

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XRD Patterns and Bismuth Sticking Coefficient in $Bi_2Sr_2Ca_nCu_{n+1}O_y(n\geq0)$ Thin Films Fabricated by Ion Beam Sputtering Method

  • Yang, Seung-Ho;Park, Yong-Pil
    • Journal of information and communication convergence engineering
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    • 제4권4호
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    • pp.158-161
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    • 2006
  • [ $Bi_2Sr_2Ca_nCu_{n+1}O_y(n{\geq}0)$ ] thin film is fabricatedvia two different processes using an ion beam sputtering method i.e. co-deposition and layer-by-layer deposition. A single phase of Bi2212 can be fabricated via the co-deposition process. While it cannot be obtained by the layer-by-layer process. Ultra-low growth rate in our ion beam sputtering system brings out the difference in Bi element adsorption between the two processes and results in only 30% adsorption against total incident Bi amount by layer-by-layer deposition, in contrast to enough Bi adsorption by co-deposition.

$CoSi_{2}$ 에피박막을 확산원으로 이용하여 형성한 매우 얇은 접합의 전기적 특성 (Electrical properties of Ultra-Shallow Junction formed by using Epitaxial $CoSi_{2}$ Thin Film as Diffusion Source)

  • 구본철;심현상;정연실;배규식
    • 한국재료학회지
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    • 제8권5호
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    • pp.470-473
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    • 1998
  • Co/Ti 이중막을 급속열처리하여 형성한 $CoSi_{2}$$As^+$을 이온주입한 후, 500~$1000^{\circ}C$에서 drive-in 열처리하여 매우얇은 $n_{+}$ p접합의 다이오드를 제작하고 I-V 특성을 측정하였다. $500^{\circ}C$에서 280초 drive-in 열처리하였을 때, 50nm정도의 매우 얇은접합이 형성되었고, 누설전류가 매우 낮아 가장 우수한 다이오드 특성을 나타내었다. 특히, Co 단일막을 사용한 다이오드에 비해 누설전류는 2order 이상 낮았으며, 이는 $CoSi_{2}$Si의 계면이 균일하였기 때문이다.

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