1985
DOI: 10.1002/pssb.2221300103
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Pressure‐Induced Phase Transition in RbH

Abstract: Measurements of the RbH volume in dependence on pressure up to 35 kbar are carried out in the temperature range 290 to 555 K. The bulk modulus of the initial R,bH phase is equal to 136 kbar a t room temperature. A phase transition with a jump of volume of 8.5% is found in RbH at about 17 kbar. The T-P phase diagram of RbH is plotted. The results obtained are in accord with the previously stated idea of the crystzllochemical similarity of alkali hydrides and alkali halides.

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Cited by 4 publications
(1 citation statement)
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“…By using a simple hard-sphere ion model and assuming similar behavior of alkali-hydrides and alkali-halides Bashkin et al 22 have predicted that B1-B2 transition is thermodynamically possible for all alkali-metal hydrides (excluding LiH) and proved this prediction experimentally (but not in a direct way) for KH 22 , CsH 23 and RbH. 24,25 The volume changes during B1-B2 transitions for these hydrides were 8.5 % for CsH 23 and 10.6 % for RbH 24 . They did not proved B1-B2 transition for NaH for which calculated volume change was estimated as only ~2%.…”
Section: Alkali Metal Hydridesmentioning
confidence: 99%
“…By using a simple hard-sphere ion model and assuming similar behavior of alkali-hydrides and alkali-halides Bashkin et al 22 have predicted that B1-B2 transition is thermodynamically possible for all alkali-metal hydrides (excluding LiH) and proved this prediction experimentally (but not in a direct way) for KH 22 , CsH 23 and RbH. 24,25 The volume changes during B1-B2 transitions for these hydrides were 8.5 % for CsH 23 and 10.6 % for RbH 24 . They did not proved B1-B2 transition for NaH for which calculated volume change was estimated as only ~2%.…”
Section: Alkali Metal Hydridesmentioning
confidence: 99%