Thermochemistry of MgB2 thin film synthesis

Jihoon Kim; Rakesh Singh; Nathan Newman; John M. Rowell

doi:10.1109/TASC.2003.812210

Thermochemistry of MgB₂ thin film synthesis

Jihoon Kim, Rakesh Singh, Nathan Newman, John M. Rowell

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

58 Scopus citations

Abstract

We have investigated the thermodynamic and kinetic barriers involved in the synthesis of MgB₂ films. This work refines our initial conjectures predicting optimal MgB₂ thin film growth conditions as a consequence of the unusually large kinetic barrier to MgB₂ decomposition. The small Mg sticking coefficient at temperatures greater than 300 °C prevents high temperature synthesis with traditional vacuum growth methods. However, as a result of the large kinetic barrier to MgB₂ decomposition, in-situ thermal processing can be used to enhance the crystallinity and the superconductivity of MgB₂ films. We used these methods to produce MgB₂ thin films with relatively high transition temperatures (∼37 K) by pulsed laser deposition (PLD).

Original language	English (US)
Pages (from-to)	3238-3241
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 III
DOIs	https://doi.org/10.1109/TASC.2003.812210
State	Published - Jun 2003
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: Aug 4 2002 → Aug 9 2002

Keywords

MgB
Superconductor
Thermochemistry
Thin films

ASJC Scopus subject areas

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

Access to Document

10.1109/TASC.2003.812210

Cite this

@article{a556064f45124909b11736921629e3de,

title = "Thermochemistry of MgB2 thin film synthesis",

abstract = "We have investigated the thermodynamic and kinetic barriers involved in the synthesis of MgB2 films. This work refines our initial conjectures predicting optimal MgB2 thin film growth conditions as a consequence of the unusually large kinetic barrier to MgB2 decomposition. The small Mg sticking coefficient at temperatures greater than 300 °C prevents high temperature synthesis with traditional vacuum growth methods. However, as a result of the large kinetic barrier to MgB2 decomposition, in-situ thermal processing can be used to enhance the crystallinity and the superconductivity of MgB2 films. We used these methods to produce MgB2 thin films with relatively high transition temperatures (∼37 K) by pulsed laser deposition (PLD).",

keywords = "MgB, Superconductor, Thermochemistry, Thin films",

author = "Jihoon Kim and Rakesh Singh and Nathan Newman and Rowell, {John M.}",

note = "Funding Information: Manuscript received August 6, 2002. This work was supported by the Office of Naval Research under Contract N00014-02-1-0002.; 2002 Applied Superconductivity Conference ; Conference date: 04-08-2002 Through 09-08-2002",

year = "2003",

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doi = "10.1109/TASC.2003.812210",

language = "English (US)",

volume = "13",

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journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2 III",

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TY - JOUR

T1 - Thermochemistry of MgB2 thin film synthesis

AU - Kim, Jihoon

AU - Singh, Rakesh

AU - Newman, Nathan

AU - Rowell, John M.

N1 - Funding Information: Manuscript received August 6, 2002. This work was supported by the Office of Naval Research under Contract N00014-02-1-0002.

PY - 2003/6

Y1 - 2003/6

N2 - We have investigated the thermodynamic and kinetic barriers involved in the synthesis of MgB2 films. This work refines our initial conjectures predicting optimal MgB2 thin film growth conditions as a consequence of the unusually large kinetic barrier to MgB2 decomposition. The small Mg sticking coefficient at temperatures greater than 300 °C prevents high temperature synthesis with traditional vacuum growth methods. However, as a result of the large kinetic barrier to MgB2 decomposition, in-situ thermal processing can be used to enhance the crystallinity and the superconductivity of MgB2 films. We used these methods to produce MgB2 thin films with relatively high transition temperatures (∼37 K) by pulsed laser deposition (PLD).

AB - We have investigated the thermodynamic and kinetic barriers involved in the synthesis of MgB2 films. This work refines our initial conjectures predicting optimal MgB2 thin film growth conditions as a consequence of the unusually large kinetic barrier to MgB2 decomposition. The small Mg sticking coefficient at temperatures greater than 300 °C prevents high temperature synthesis with traditional vacuum growth methods. However, as a result of the large kinetic barrier to MgB2 decomposition, in-situ thermal processing can be used to enhance the crystallinity and the superconductivity of MgB2 films. We used these methods to produce MgB2 thin films with relatively high transition temperatures (∼37 K) by pulsed laser deposition (PLD).

KW - MgB

KW - Superconductor

KW - Thermochemistry

KW - Thin films

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