High-density plasma-arc heating studies of FePt thin films

Amanda Cole; Gregory B. Thompson; J. W. Harrell; J. Weston; Ronald D. Ott

doi:10.1007/s11837-006-0179-5

High-density plasma-arc heating studies of FePt thin films

Amanda Cole, Gregory B. Thompson, J. W. Harrell, J. Weston, Ronald D. Ott

Energy Science and Technology Directorat

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

4 Scopus citations

Abstract

The effect of pulsed-thermal-processing with high-density plasma arc heating is discussed for 20 nm thick nanocrystalline FePt thin films. The dependence of the A1 → L1₀ phase transformation on pulsed time and radiant energy of the pulse is quantified through x-ray diffraction and alternating gradient magnetometry. For 100ms and 250 ms pulse widths, the phase transformation was observed. Higher radiant energy densities resulted in a larger measured coercivity associated with the L1₀ phase.

Original language	English
Pages (from-to)	39-42
Number of pages	4
Journal	JOM
Volume	58
Issue number	6
DOIs	https://doi.org/10.1007/s11837-006-0179-5
State	Published - Jun 2006

Funding

A. Cole and G.B. Thompson grate fully recognize NASA Training Grant NNG05GE80H for support of this research. J.W. Harrell recognizes NSF-MRSEC-DMR-0213985. Portions of the research were sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725.

Funders	Funder number
UT-Battelle
U.S. Department of Energy
Oak Ridge National Laboratory

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abstract = "The effect of pulsed-thermal-processing with high-density plasma arc heating is discussed for 20 nm thick nanocrystalline FePt thin films. The dependence of the A1 → L10 phase transformation on pulsed time and radiant energy of the pulse is quantified through x-ray diffraction and alternating gradient magnetometry. For 100ms and 250 ms pulse widths, the phase transformation was observed. Higher radiant energy densities resulted in a larger measured coercivity associated with the L10 phase.",

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AU - Weston, J.

AU - Ott, Ronald D.

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AB - The effect of pulsed-thermal-processing with high-density plasma arc heating is discussed for 20 nm thick nanocrystalline FePt thin films. The dependence of the A1 → L10 phase transformation on pulsed time and radiant energy of the pulse is quantified through x-ray diffraction and alternating gradient magnetometry. For 100ms and 250 ms pulse widths, the phase transformation was observed. Higher radiant energy densities resulted in a larger measured coercivity associated with the L10 phase.

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High-density plasma-arc heating studies of FePt thin films

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