X-ray diffraction on levitated liquids : application to liquid 80%Co-20%Pd alloy.

Journal Article · Sun Aug 01 04:00:00 EDT 1999 · J. Non-Cryst. Solids

DOI:https://doi.org/10.1016/S0022-3093(99)00251-3· OSTI ID:942410

Krishnan, S

We describe the use of a novel levitation apparatus for structural studies on liquid materials using synchrotron X-ray scattering. The apparatus has been employed in investigations of the structural properties of a range of liquid ceramic, metallic, and semiconducting materials in the temperature range of 1000-3500 K. The apparatus uses conical nozzle levitation to stably position solid and liquid specimens at temperatures >1000 K. Specimens are heated with a 270 W, CO{sub 2} laser to melt, overheat and supercool the specimens in the desired temperature range. We report the first measurements of the total structure factor, S(Q), and pair distributions function, G(r), of liquid 80%Co-20%Pd in both the normal and supercooled states. This alloy has been previously reported to exhibit magnetic order in the supercooled liquid state. No abrupt structural change was observed as the alloy was supercooled, although it was not possible to cool the liquid to temperatures at which magnetic ordering has been reported.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: ER
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 942410
• Report Number(s): ANL/MSD/JA-31124
• Journal Information: J. Non-Cryst. Solids, Journal Name: J. Non-Cryst. Solids Journal Issue: Pt. 1 ; Aug. 1999 Vol. 250; ISSN JNCSBJ; ISSN 0022-3093
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
ALLOYS
LASERS
LEVITATION
LIQUIDS
MATERIALS
NOZZLES
RANGE
SCATTERING
SOLIDS
STRUCTURE FACTORS
SYNCHROTRONS
TEMPERATURE RANGE
X-RAY DIFFRACTION