Ionic conductivity and crystal structure of TM-doped Mg 0.5Ti2(PO4)3 (TM = Fe, Mn, Co and Nb)

Hiroo Takahashi, Hitoshi Takamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

New magnesium-ion conductors, TM-doped Mg0.5Ti 2(PO4)3 (TM = Fe, Mn, Co and Nb), have been prepared by sol-gel method. In addition, their crystal structure has been refined by Rietveld technique and the conductivity has been evaluated by ac impedance method. The samples were sintered at 1150°C for 2 h (Fe, Mn and Co) or 1200°C for 10 h (Nb). For all samples, three resistance components attributed to grain, grain boundary and the interface of electrolyte-electrode were successfully separated as a result of sintering accompanied by grain growth reaching to 5 to 10 μm. The change of ionic conductivity will be discussed in relation to the dopants and their crystal structures.

Original languageEnglish
Title of host publicationMaterials Integration
PublisherTrans Tech Publications Ltd
Pages291-299
Number of pages9
ISBN (Print)9783037853764
DOIs
Publication statusPublished - 2012
EventInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011 - Sendai, Japan
Duration: 2011 Dec 12011 Dec 2

Publication series

NameKey Engineering Materials
Volume508
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

OtherInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011
CountryJapan
CitySendai
Period11/12/111/12/2

Keywords

  • Ionic conductor
  • NASICON-type structure
  • Phosphate
  • Structural analysis

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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