English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI)

Albrecht, R., Hoelzel, M., Beccard, H., Rüsing, M., Eng, L., Doert, T., et al. (2021). Potassium Ion Conductivity in the Cubic Labyrinth of a Piezoelectric, Antiferromagnetic Oxoferrate(III) Tellurate(VI). Chemistry – A European Journal, 1-9. doi:10.1002/chem.202102464.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Albrecht, Ralf1, Author
Hoelzel, Markus1, Author
Beccard, Henrik1, Author
Rüsing, Michael1, Author
Eng, Lukas1, Author
Doert, Thomas1, Author
Ruck, Michael2, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863444              

Content

show
hide
Free keywords: -
 Abstract: Orange-colored crystals of the oxoferrate tellurate K12+6xFe6Te4-xO27 [x=0.222(4)] were synthesized in a potassium hydroxide hydroflux with a molar water-base ratio n(H2O)/n(KOH) of 1.5 starting from Fe(NO3)(3) . 9H(2)O, TeO2 and H2O2 at about 200 degrees C. By using (NH4)(2)TeO4 instead of TeO2, a fine powder consisting of microcrystalline spheres of K12+6xFe6Te4-xO27 was obtained. K12+6xFe6Te4-xO27 crystallizes in the acentric cubic space group I4? 3d. [(FeO5)-O-III] pyramids share their apical atoms in [Fe2O9] groups and two of their edges with [(TeO6)-O-VI] octahedra to form an open framework that consists of two loosely connected, but not interpenetrating, chiral networks. The flexibility of the hinged oxometalate network manifests in a piezoelectric response similar to that of LiNbO3.The potassium cations are mobile in channels that run along the directions and cross in cavities acting as nodes. The ion conductivity of cold-pressed pellets of ball-milled K12+6xFe6Te4-xO27 is 2.3x10(-4) S . cm(-1) at room temperature. Magnetization measurements and neutron diffraction indicate antiferromagnetic coupling in the [Fe2O9] groups.

Details

show
hide
Language(s): eng - English
 Dates: 2021-07-282021-07-28
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000693316300001
DOI: 10.1002/chem.202102464
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Chemistry – A European Journal
  Other : Chem. – Eur. J.
  Other : Chem. Eur. J.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 1 - 9 Identifier: ISSN: 0947-6539
CoNE: https://pure.mpg.de/cone/journals/resource/954926979058