Phase evolution in PLD MgB2 films during the in situ annealing process

Y. Zhao; Y. S. Wu; C. Kong; D. Wexler; M. Vos; M. R. Went; S. X. Dou

doi:10.1088/0953-2048/20/11/S32

Phase evolution in PLD MgB₂ films during the in situ annealing process

Y. Zhao^*, Y. S. Wu, C. Kong, D. Wexler, M. Vos, M. R. Went, S. X. Dou

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

The transformation of zero-field-cooled (ZFC) magnetization curves of PLD MgB₂ films annealed in situ for different dwell times and at different temperatures is studied within the context of structural analysis. The PLD films were deposited using an off-axis geometry followed by two series of annealing conditions: the dwell time series and the annealing temperature series. ZFC magnetization curves were obtained in an MPMS magnetometer from samples that had been cut into similar shapes. XRD scans on the two series of film samples show enhanced (001) and (002) MgB₂ peaks till a dwell time of 9min at a 650 °C and a 800 °C annealing temperature. TEM results show a granular transformation from an un-annealed film to a 700 °C 9min in situ annealed film. The possible structural development with annealing time and annealing temperature is then discussed.

Original language	English
Pages (from-to)	S467-S471
Journal	Superconductor Science and Technology
Volume	20
Issue number	11
DOIs	https://doi.org/10.1088/0953-2048/20/11/S32
Publication status	Published - 1 Nov 2007

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title = "Phase evolution in PLD MgB2 films during the in situ annealing process",

abstract = "The transformation of zero-field-cooled (ZFC) magnetization curves of PLD MgB2 films annealed in situ for different dwell times and at different temperatures is studied within the context of structural analysis. The PLD films were deposited using an off-axis geometry followed by two series of annealing conditions: the dwell time series and the annealing temperature series. ZFC magnetization curves were obtained in an MPMS magnetometer from samples that had been cut into similar shapes. XRD scans on the two series of film samples show enhanced (001) and (002) MgB2 peaks till a dwell time of 9min at a 650 °C and a 800 °C annealing temperature. TEM results show a granular transformation from an un-annealed film to a 700 °C 9min in situ annealed film. The possible structural development with annealing time and annealing temperature is then discussed.",

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T1 - Phase evolution in PLD MgB2 films during the in situ annealing process

AU - Zhao, Y.

AU - Wu, Y. S.

AU - Kong, C.

AU - Wexler, D.

AU - Vos, M.

AU - Went, M. R.

AU - Dou, S. X.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - The transformation of zero-field-cooled (ZFC) magnetization curves of PLD MgB2 films annealed in situ for different dwell times and at different temperatures is studied within the context of structural analysis. The PLD films were deposited using an off-axis geometry followed by two series of annealing conditions: the dwell time series and the annealing temperature series. ZFC magnetization curves were obtained in an MPMS magnetometer from samples that had been cut into similar shapes. XRD scans on the two series of film samples show enhanced (001) and (002) MgB2 peaks till a dwell time of 9min at a 650 °C and a 800 °C annealing temperature. TEM results show a granular transformation from an un-annealed film to a 700 °C 9min in situ annealed film. The possible structural development with annealing time and annealing temperature is then discussed.

AB - The transformation of zero-field-cooled (ZFC) magnetization curves of PLD MgB2 films annealed in situ for different dwell times and at different temperatures is studied within the context of structural analysis. The PLD films were deposited using an off-axis geometry followed by two series of annealing conditions: the dwell time series and the annealing temperature series. ZFC magnetization curves were obtained in an MPMS magnetometer from samples that had been cut into similar shapes. XRD scans on the two series of film samples show enhanced (001) and (002) MgB2 peaks till a dwell time of 9min at a 650 °C and a 800 °C annealing temperature. TEM results show a granular transformation from an un-annealed film to a 700 °C 9min in situ annealed film. The possible structural development with annealing time and annealing temperature is then discussed.

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DO - 10.1088/0953-2048/20/11/S32

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JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

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ER -

Phase evolution in PLD MgB₂ films during the in situ annealing process

Abstract

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