Trying to differentiate crystalline, polycrystalline, amorphous and polyamorphous materials among one one another.
I already answered your question along with your previous related questions:
Amorphous materials do not have long-range crystalline structure but often have short-range correlations which lead to broad humps in the intensity variation X-ray diffraction intensities with Q or scattering angle 2\theta. Short range correlation signifies that in the local structure it has still the some recognizable chemical bonding and cluster formation but they do not repeat regularly to form crystals not even polycrystalline form that are charecterized by sharp Bragg spots or Debye rings. Now a crystal may have polyphorphism meaning it may be crystallized in different crystal structures depending on the growth method and conditions. This happens when these different crystalline structures have almost same energies. Similar situation can happen to an amorophous substance which may have different types of short range order and there may even be transitions between these different polyamorophous phases like in their crystalline analog where the corresponding term is polymprphous phases.
I already answered your question along with your previous related questions:
Amorphous materials do not have long-range crystalline structure but often have short-range correlations which lead to broad humps in the intensity variation X-ray diffraction intensities with Q or scattering angle 2\theta. Short range correlation signifies that in the local structure it has still the some recognizable chemical bonding and cluster formation but they do not repeat regularly to form crystals not even polycrystalline form that are charecterized by sharp Bragg spots or Debye rings. Now a crystal may have polyphorphism meaning it may be crystallized in different crystal structures depending on the growth method and conditions. This happens when these different crystalline structures have almost same energies. Similar situation can happen to an amorophous substance which may have different types of short range order and there may even be transitions between these different polyamorophous phases like in their crystalline analog where the corresponding term is polymprphous phases.
You can get answers and many examples there :
http://en.wikipedia.org/wiki/Polyamorphism
Alain
I do not know of such a concept. The materials are amorphous and so. If they have some grains that can be, e.g., nanocrystalline or microcrystalline. The crystalline phase is a mixture of polycrystalline materials. Polymorphous it might polymers composed of various kinds of amorphous phases but totally do not know what it is. So please do not judge this response.
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