Incommensurate atomic density waves in the high-pressure IVb phase of barium


The host-guest structures of elements at high pressure discovered a decade ago still leave many open questions due to the lack of precise models based on full exploitation of the diffraction data. This concerns in particular Ba IV, which is stable in the range 12-45 GPa. With the example of phase Ba IVb, which is characterized here for the first time, a… (More)
DOI: 10.1107/S2052252517000264


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