Research: Quasicrystals

Quasicrystals are well-ordered materials, possessing sharp diffraction patterns, but lacking the translational symmetry of conventional crystals. We are therefore able to explore the consequences of an ordered but non-periodic structure on magnetic and electronic ground states. Recent advances in the growth of single quasicrystals have opened the door to making detailed measurements of the intrinsic magnetic and electronic properties of these and related materials. Such measurements directly address outstanding questions in the field. Recent results have included the growth and characterization of the primitive icosahedral phase R-Mg-Cd (left photograph) and elucidation of the transport properties of the controversial Al-Pd-Re system via measurements of single-grain samples (right photograph).
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Fisher Research Group
Geballe Laboratory for Advanced Materials
Dept. of Applied Physics
Stanford University
CA 94305-4045
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