Nanoscale disorder in pure and doped MgB2 thin films

Y. Zhu; A. V. Pogrebnyakov; R. H. Wilke; K. Chen; X. X. Xi; J. M. Redwing; C. G. Zhuang; Q. R. Feng; Z. Z. Gan; R. K. Singh; Y. Shen; N. Newman; J. M. Rowell; F. Hunte; J. Jaroszynski; D. C. Larbalestier; S. A. Baily; F. F. Balakirev; P. M. Voyles

doi:10.1088/0953-2048/23/9/095008

Nanoscale disorder in pure and doped MgB₂ thin films

Y. Zhu, A. V. Pogrebnyakov, R. H. Wilke, K. Chen, X. X. Xi, J. M. Redwing, C. G. Zhuang, Q. R. Feng, Z. Z. Gan, R. K. Singh, Y. Shen, N. Newman, J. M. Rowell, F. Hunte, J. Jaroszynski, D. C. Larbalestier, S. A. Baily, F. F. Balakirev, P. M. Voyles

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14 Scopus citations

Abstract

MgB₂ thin films have superior superconducting properties compared to bulk MgB₂ and demonstrate the potential for further improving the performances of MgB₂ wires and tapes.Using transmission electron microscopy, we have characterized the microstructure of pure and C-doped MgB₂ using various carbon sources grown by hybrid physical-chemical vapor deposition (HPCVD), and cold-grown-annealed film deposited by molecular beam epitaxy (MBE). The MgB₂ HPCVD films increase in crystal quality in the order (MeCp)₂Mg-sourced films, CH₄-sourced films, B(CH₃)₃-sourced films, pure films, while the H_c2 values of these films follow the opposite order. The cold-grown-annealed MgB₂ MBE film contains non-epitaxial ≤10 nm MgB₂ grains and MgO nanoparticles. The microstructural origins of electron scattering and flux pinning in both films are discussed. We also show the structure and chemistry of the degraded phase in HPCVD films and its effects on superconducting properties.

Original language	English (US)
Article number	095008
Journal	Superconductor Science and Technology
Volume	23
Issue number	9
DOIs	https://doi.org/10.1088/0953-2048/23/9/095008
State	Published - Sep 2010

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/23/9/095008

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Zhu, Y., Pogrebnyakov, A. V., Wilke, R. H., Chen, K., Xi, X. X., Redwing, J. M., Zhuang, C. G., Feng, Q. R., Gan, Z. Z., Singh, R. K., Shen, Y., Newman, N., Rowell, J. M., Hunte, F., Jaroszynski, J., Larbalestier, D. C., Baily, S. A., Balakirev, F. F., & Voyles, P. M. (2010). Nanoscale disorder in pure and doped MgB₂ thin films. Superconductor Science and Technology, 23(9), Article 095008. https://doi.org/10.1088/0953-2048/23/9/095008

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title = "Nanoscale disorder in pure and doped MgB2 thin films",

abstract = "MgB2 thin films have superior superconducting properties compared to bulk MgB2 and demonstrate the potential for further improving the performances of MgB2 wires and tapes.Using transmission electron microscopy, we have characterized the microstructure of pure and C-doped MgB2 using various carbon sources grown by hybrid physical-chemical vapor deposition (HPCVD), and cold-grown-annealed film deposited by molecular beam epitaxy (MBE). The MgB2 HPCVD films increase in crystal quality in the order (MeCp)2Mg-sourced films, CH4-sourced films, B(CH3)3-sourced films, pure films, while the Hc2 values of these films follow the opposite order. The cold-grown-annealed MgB2 MBE film contains non-epitaxial ≤10 nm MgB2 grains and MgO nanoparticles. The microstructural origins of electron scattering and flux pinning in both films are discussed. We also show the structure and chemistry of the degraded phase in HPCVD films and its effects on superconducting properties.",

author = "Y. Zhu and Pogrebnyakov, {A. V.} and Wilke, {R. H.} and K. Chen and Xi, {X. X.} and Redwing, {J. M.} and Zhuang, {C. G.} and Feng, {Q. R.} and Gan, {Z. Z.} and Singh, {R. K.} and Y. Shen and N. Newman and Rowell, {J. M.} and F. Hunte and J. Jaroszynski and Larbalestier, {D. C.} and Baily, {S. A.} and Balakirev, {F. F.} and Voyles, {P. M.}",

year = "2010",

month = sep,

doi = "10.1088/0953-2048/23/9/095008",

language = "English (US)",

volume = "23",

journal = "Superconductor Science and Technology",

issn = "0953-2048",

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Zhu, Y, Pogrebnyakov, AV, Wilke, RH, Chen, K, Xi, XX, Redwing, JM, Zhuang, CG, Feng, QR, Gan, ZZ, Singh, RK, Shen, Y, Newman, N, Rowell, JM, Hunte, F, Jaroszynski, J, Larbalestier, DC, Baily, SA, Balakirev, FF & Voyles, PM 2010, 'Nanoscale disorder in pure and doped MgB₂ thin films', Superconductor Science and Technology, vol. 23, no. 9, 095008. https://doi.org/10.1088/0953-2048/23/9/095008

TY - JOUR

T1 - Nanoscale disorder in pure and doped MgB2 thin films

AU - Zhu, Y.

AU - Pogrebnyakov, A. V.

AU - Wilke, R. H.

AU - Chen, K.

AU - Xi, X. X.

AU - Redwing, J. M.

AU - Zhuang, C. G.

AU - Feng, Q. R.

AU - Gan, Z. Z.

AU - Singh, R. K.

AU - Shen, Y.

AU - Newman, N.

AU - Rowell, J. M.

AU - Hunte, F.

AU - Jaroszynski, J.

AU - Larbalestier, D. C.

AU - Baily, S. A.

AU - Balakirev, F. F.

AU - Voyles, P. M.

PY - 2010/9

Y1 - 2010/9

N2 - MgB2 thin films have superior superconducting properties compared to bulk MgB2 and demonstrate the potential for further improving the performances of MgB2 wires and tapes.Using transmission electron microscopy, we have characterized the microstructure of pure and C-doped MgB2 using various carbon sources grown by hybrid physical-chemical vapor deposition (HPCVD), and cold-grown-annealed film deposited by molecular beam epitaxy (MBE). The MgB2 HPCVD films increase in crystal quality in the order (MeCp)2Mg-sourced films, CH4-sourced films, B(CH3)3-sourced films, pure films, while the Hc2 values of these films follow the opposite order. The cold-grown-annealed MgB2 MBE film contains non-epitaxial ≤10 nm MgB2 grains and MgO nanoparticles. The microstructural origins of electron scattering and flux pinning in both films are discussed. We also show the structure and chemistry of the degraded phase in HPCVD films and its effects on superconducting properties.

AB - MgB2 thin films have superior superconducting properties compared to bulk MgB2 and demonstrate the potential for further improving the performances of MgB2 wires and tapes.Using transmission electron microscopy, we have characterized the microstructure of pure and C-doped MgB2 using various carbon sources grown by hybrid physical-chemical vapor deposition (HPCVD), and cold-grown-annealed film deposited by molecular beam epitaxy (MBE). The MgB2 HPCVD films increase in crystal quality in the order (MeCp)2Mg-sourced films, CH4-sourced films, B(CH3)3-sourced films, pure films, while the Hc2 values of these films follow the opposite order. The cold-grown-annealed MgB2 MBE film contains non-epitaxial ≤10 nm MgB2 grains and MgO nanoparticles. The microstructural origins of electron scattering and flux pinning in both films are discussed. We also show the structure and chemistry of the degraded phase in HPCVD films and its effects on superconducting properties.

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DO - 10.1088/0953-2048/23/9/095008

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VL - 23

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 9

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ER -

Nanoscale disorder in pure and doped MgB₂ thin films

Abstract

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