High-energy X-ray diffraction studies of i-Sc12Zn88

Journal Article · Thu Sep 16 04:00:00 EDT 2010 · Philosophical Magazine

OSTI ID:1024885

Goldman, A I; Kreyssig, A; Nandi, S; Kim, M G; Caudle, M L; Canfield, P C

Although quasicrystals form in a wide variety of ternary and quaternary metallic alloys, examples of stable binary icosahedral quasicrystals are quite rare. Indeed, it has been a decade since the discovery of icosahedral phases in Yb-Cd and Ca-Cd. We have discovered millimeter-sized facetted grains of i-Sc12Zn88 with icosahedral (pentagonal dodecahedral and rhombic triacontahedral) morphologies in solution-grown samples. Structural characterization of the bulk icosahedral phase was accomplished through single-grain high-energy X-ray diffraction. For both growth morphologies, all diffraction peaks could be indexed by a primitive (P-type) icosahedral phase. The two types of morphology do, however, present interesting differences in their respective degrees of quasicrystalline order.

• Research Organization: Ames Laboratory (AMES), Ames, IA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-07CH11358
• OSTI ID: 1024885
• Report Number(s): IS-J 7581
• Journal Information: Philosophical Magazine, Journal Name: Philosophical Magazine Journal Issue: 19-21 Vol. 91; ISSN 1478-6435
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
DIFFRACTION
MORPHOLOGY
X-RAY DIFFRACTION