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• Modulated crystal structures - periodicity in more than three dimensions

  Publikacja

  • A. Okuniewski

  - Rok 2012

  The initial definition of a crystal was that it is an object with flat faces. When diffraction studies were developed it turned out that crystal consists of a highly ordered particles and it is possible to isolate a small unique part of their structure - a unit cell - and the definition has been changed to rely on this fact. Nowadays by a crystal we mean any solid having an essentially discrete diffraction diagram. It is because...