Amorphous silica shows an amorphous hump in its diffractograms, due to the 101 reflection of beta cristobalite. Could one argue that there is a preferred orientation in the 101 plane within the short range order?
No, in my opinion the reasoning is not correct: the amorphous hump in the vicinity of the (101) reflection of beta cristobalite is characteristic exclusively for the amorphous phase without any reference to the short-range order of the (101) planes of the beta phase. Nevertheless, in order to be sure, it is adviced to perform additional verification with use of TEM or HRTEM analyses.
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No, the "glass hump" has nothing to do with crystals. This Article just appeared online: DOI: 10.1039/c3ce26843h (CrystEngComm). Its main topic is orientation analysis of surface crystallized Silica.
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