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Pressure-induced zircon-type to scheelite-type phase transitions in YbPO4 and LuPO4 |
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| Authors: | FX Zhang M Lang J Lian ZW Wang LA Boatner |
| Institution: | a Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, USA b Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA c Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14853, USA d National Synchrotron Light Source, Upton, NY 11973, USA e Materials Science and Technology Division and Center for Radiation Detection Materials and Systems, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA |
| Abstract: | The tetragonal orthophosphates, YbPO4 and LuPO4, were studied by in situ X-ray diffraction (XRD) at pressures up to 52 and 43 GPa, respectively. A reversible phase transition from the zircon structure-type to the scheelite structure-type was found at ∼22 GPa for YbPO4 and 19 GPa for LuPO4. Coinciding with the transition from the zircon structure-type to the scheelite structure-type, there is a ∼10% reduction in volume and a significant increase in the bulk modulus for both compounds. |
| Keywords: | Orthophosphate High pressure Phase transition |
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