Raman and x-ray diffraction investigations on BaMoO4 under high pressures
Vinod Panchal, Nandini Garg, Surinder M. Sharma
Abstract
X-ray diffraction and Raman scattering studies on scheelite structured barium molybdate show that, at 5.8 GPa, it undergoes a first order phase transition to fergusonite structure (I2/a, Z=4), asobserved in iso-structural barium tungstate.At still higher pressures, barium molybdate transform to another phase between 7.2-9.5 GPa. On release of pressure from 15.8 GPa, the initial phase is recovered implying that the observed structural modifications are reversible.
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