Journal
CHEMISTRY OF MATERIALS
Volume 13, Issue 2, Pages 487-490Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm000788k
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High-pressure X-ray diffraction experiments on cubic ZrMo2O8 have shown that the material undergoes a first-order phase transition involving an 11% volume decrease between 0.7 and 2.0 GPa under quasi-hydrostatic conditions. The transition is reversible upon decompression, but shows considerable hysteresis. Similar behavior was observed for cubic HfMo2O8. Under nonhydrostatic conditions, the cubic materials start to amorphize above 0.3 GPa and can be converted to the monoclinic polymorphs when heated under pressure. This is the first time that monoclinic HfMo2O8 was observed.
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