Structural phase transitions in RbBH4 under compression
作者： Ravhi S. Kumar , Andrew L. Cornelius
DOI: 10.1016/J.JALLCOM.2008.09.022
关键词: Raman spectroscopy 、 Chemistry 、 Hydrogen storage 、 Orthorhombic crystal system 、 Crystallography 、 Synchrotron 、 Diffraction 、 Monoclinic crystal system 、 Structural stability 、 Structural phase
摘要: Abstract In situ high pressure synchrotron powder X-ray diffraction and Raman techniques were used to study the structural stability of RbBH4 at room temperature up 27 GPa. Two successive induced transitions observed in from ambient cubic F m 3 ¯ phase an orthorhombic Pnma around 2.5 GPa, then a monoclinic P2/C above 8 GPa. The is found be reversible. experiments show that polymorphs pressures are different similar hydrogen storage compounds NaBH4 KBH4.
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