Affordable Access

Publisher Website

Struktur und ionenleitung in festkörpern V: Struktur und eigenschaften der Verbindungen Na3MnZr(PO4)3und Na3MgZr(PO4)3

Authors
Journal
Journal of the Less Common Metals
0022-5088
Publisher
Elsevier
Publication Date
Volume
137
Identifiers
DOI: 10.1016/0022-5088(88)90074-4

Abstract

Abstract Na 3MgZr(PO 4) 3 and Na 3MnZr(PO 4) 3 exist in the NASICON structure (space group R 3 ̄ c — D 6 3d ) with the lattice constants a 0 = (890.7 ± 0.6) pm, c 0 = (2222 ± 4) pm or a 0 = 900.0 pm, c 0 = 2239.3 pm, respectively. Intensity calculations of X-ray powder diagrams based on different models and 31P-MAS-NMR measurements indicate random distribution of Zr IV and Mg II or Mn II on the octahedral sites. The Na + ions are suggested to be equally distributed one on the Na I site and three on the Na II sites of the lattice. The compounds show incongruent melting at 1075 °C or 1025 °C, respectively. The conductivity of the manganese compound is about three times higher than for the magnesium compound. However, in comparison with Na 3Zr 2(SiO 4) 2(PO 4) the Na + ion conductivity at 300 °C is about three orders of magnitude lower, which is assumed to be caused by the highly irregular structure of the compounds.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

NASICON-type Na3V2(PO4)3

on Acta Crystallographica Section... Jan 02, 2010

A new low-voltage plateau of Na3V2(PO4)3 as an ano...

on Chemical Communications Apr 14, 2015

Preparation, characterization, spectral and conduc...

on Ceramics International Jan 01, 2009

Performance of NiCrAlY, Ni–Cr, Stellite-6 and Ni3A...

on Surface and Coatings Technolog... Jan 01, 2006
More articles like this..