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Neutron diffraction studies on Ca1−x Ba x Zr4P6O24 solid solutions |
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| Authors: | S N Achary O D Jayakumar S J Patwe A B Shinde P S R Krishna S K Kulshreshtha A K Tyagi |
| Institution: | (1) Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India;(2) Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India |
| Abstract: | Herein we report the results of detailed crystallographic studies of Ca1−x Ba x Zr4P6O24 compositions from combined Rietveld refinements of powder X-ray and neutron diffraction data. All the studied compositions crystallize in rhombohedral lattice (space group R-3 No. 148). A continuous solid solution is concluded from the systematic variation of unit cell parameters. The variation of unit cell parameters with the composition indicates decreasing trend in a parameter with increasing Ba2+ concentration contrast to an increasing trend in c parameter. |
| Keywords: | Neutron diffraction X-ray diffraction Rietveld refinement crystal structure NZP ceramics phosphates |
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