ICDD PDF-4+ 2012 Instructions
ICDD PDF-4+ 2012 Instructions
ICDD PDF-4+ 2012 Instructions
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• Hypothetical (H). Indicates the structure is calculated theoretically from the atomic<br />
positions and thermal parameters of an isostructural compound.<br />
• Good (G). Indicates the non-‐crystalline pattern has no unit cell, but does have<br />
chemical analysis, characterization of local structure (either by pair distribution<br />
function or spectroscopy) and a good signal-‐to-‐noise.<br />
• Minimal Acceptable (M). Indicates the non-‐crystalline pattern has a good signal-‐to-‐<br />
noise and a desirable chemical analysis.<br />
(Taken from Help files for <strong>PDF</strong>-‐<strong>4+</strong> <strong>2012</strong> software)
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