Abstract
Modulated structures arise in materials in two basic ways. One way is through the natural inclination of the material to suffer a periodic modulation of its basic structure. An example of this would be the spectrum of thermal fluctuations or phonons in crystals. Other examples include long-period superlattices and spinodal decomposition in crystalline or amorphous solids, where the latter, to be observed, must be present in a metastable (however durable) condition. The second way in which modulated structure materials are obtained is through our intervention— i.e., artificially. Examples of these are the semiconductor superlattices and the synthetic multilayer metallic structures.
Issues which commonly appear in understanding these materials include: a) coherence vs. incoherence of the (lattice) structure being modulated; b) comensurate vs. incommensurate modulation. This often represents a competition between the driving force for the modulation and the response or relaxation of the structure being modulated; c) the influence of defects; d) the origin of the modulation in the basic thermodynamics or electronic structure of the materials, and e) conversely, the influence of the induced, or naturally occurring, modulation on the properties. Selected examples of these issues will be discussed.
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© 1984 Martinus Nijhoff Publishers, Dordrecht
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Moss, S.C. (1984). Modulated Structure Materials: A Selected Review. In: Tsakalakos, T. (eds) Modulated Structure Materials. Nato ASI Series, vol 83. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6195-1_1
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DOI: https://doi.org/10.1007/978-94-009-6195-1_1
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