High-Density Plasma Arc Heating Studies of FePt Thin Films

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Journal of the Minerals Metals & Materials Society (JOM)

DOI:https://doi.org/10.1007/s11837-006-0179-5· OSTI ID:1003509

Cole, Amanda C ^[1]; Thompson, Gregory ^[1]; Harrell, J. W. ^[2]; Weston, James ^[2]; Ott, Ronald D ^[1]

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1. ORNL
2. University of Alabama, Tuscaloosa

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 {yields} L1{sub 0} phase transformation on pulsed time and radiant energy of the pulse is quantified through x-ray diffraction and alternating gradient magnetometry. For 100 ms and 250 ms pulse widths, the phase transformation was observed. Higher radiant energy densities resulted in a larger measured coercivity associated with the L1{sub 0} phase.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1003509
• Journal Information: Journal of the Minerals Metals & Materials Society (JOM), Vol. 58, Issue 6; ISSN 1047-4838
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON ALLOYS
PLATINUM ALLOYS
PLASMA HEATING
PHASE TRANSFORMATIONS
THIN FILMS
X-RAY DIFFRACTION
NANOSTRUCTURES