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Delwedd:Ho-Mg-ZnQuasicrystal.jpg

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English: Ho-Mg-Zn dodecahedral quasicrystal, grown by using the self-flux method (excess Mg), and slowly cooling from 700 C to 480 C. The R-Mg-Zn family is the first rare-earth containing quasicrystal structure, which allows the study of localized magnetic moments in a quasiperiodic environment.

Or:

Photograph of a single-grain icosahedral Ho-Mg-Zn quasicrystal grown from the ternary melt. Shown over a mm scale, the edges are 2.2 mm long. Note the clearly defined pentagonal facets, and the dodecahedral morphology. [in: Phys. Rev. B 59, 308–321 (1999)]
Dyddiad Dyddiad anhysbys
Unknown date
Ffynhonnell http://cmp.ameslab.gov/personnel/canfield/photos.html#
Awdur AMES lab., US Department of Energy

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