X-ray powder diffraction study of the phase transitions in Ti₄O₇

verfasst von

R. Melzer, C. H. Rüscher

Abstract

A high precision temperature dependent X-ray powder diffraction study has been carried out on Ti₄O₇ in the temperature range between 180 and 90 K enclosing the metal-insulator and the so-called Ti₄O₇-Verwey transition. Both transitions are characterized by negative volume effects as can be deduced from the temperature dependent course of the lattice parameters. Total strains induced by the formation of the intermediate phase are about 0.007 and about twice that value in the low temperature phase. In successive heating and cooling runs it is observed that the low temperature transition occurs stepwise, possibly related to the deterioration of the modulated structure.

Organisationseinheit(en)

Institut für Mineralogie

Externe Organisation(en)

Technische Universität Berlin

Typ

Artikel

Journal

Phase transitions

Band

58

Seiten

285-295

Anzahl der Seiten

11

ISSN

0141-1594

Publikationsdatum

1996

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Instrumentierung, Allgemeine Materialwissenschaften

Elektronische Version(en)

https://doi.org/10.1080/01411599608241825 (Zugang: Geschlossen)