caa a22 4500 463230698 CHVBK 20180405153241.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-1230-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1230-1 Synthesis, crystallographic characterization and ionic conductivity of iron substituted sodium zirconium phosphate Na1.2Zr1.8Fe0.2(PO4)3 [Elektronische Daten] [O. Shrivastava, Narendra Kumar, Rashmi Chourasia] Sodium zirconium phosphate NaZr2P3O12 (hereafter NZP) crystallizes in rhombohedral (hexagonal) symmetry with the space group R-3c. The NZP-related phase of synthetic iron substituted NZP has been prepared by partial substitution on zirconium site by Fe(III). The material has been synthesized by sintering the finely powdered oxide mixture in a muffle furnace at 1,050°C. The polycrystalline phase of Na1.2Zr1.8Fe0.2(PO4)3 has been characterized by its typical powder diffraction pattern. The powder diffraction data of 3,000 points have been subjected to general structural analysis system (GSAS) software to arrive at a satisfactory structural fit with R p=0.0623 and R wp=0.0915. The following unit cell parameters have been calculated: a=b=8.83498(18)Å, c=22.7821(8)Å and α=β=90.0° γ=120.0°. The structure of NZP consists of ZrO6 octahedra and PO4 tetrahedra linked by the corners to form a three-dimensional network. Each phosphate group is on a two-fold rotation axis and is linked to four ZrO6 octahedra. Each zirconium octahedron lies on a threefold rotation axis and is connected to six PO4 tetrahedra. AC conductivity of the solid solution has been measured between 303 and 773K. The material exhibits temperature-dependent enhancement of ionic conduction by ≈400 times at elevated temperatures. The activation energies show significant change in slope at 1,000/T=2.23(448K). Springer Science+Business Media, LLC, 2006 Shrivastava O. Department of Chemistry, Dr. H. S. Gour University, 470 003, Sagar, India aut Kumar Narendra Department of Chemistry, Dr. H. S. Gour University, 470 003, Sagar, India aut Chourasia Rashmi Department of Chemistry, Dr. H. S. Gour University, 470 003, Sagar, India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2551-2556 0022-2461 42:8<2551 2007 42 10853 https://doi.org/10.1007/s10853-006-1230-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1230-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shrivastava O. Department of Chemistry, Dr. H. S. Gour University, 470 003, Sagar, India aut NATIONALLICENCE 700 1- Kumar Narendra Department of Chemistry, Dr. H. S. Gour University, 470 003, Sagar, India aut NATIONALLICENCE 700 1- Chourasia Rashmi Department of Chemistry, Dr. H. S. Gour University, 470 003, Sagar, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2551-2556 0022-2461 42:8<2551 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer