Nanoscopic study of the ion dynamics in a LiAlSiO4 glass ceramic by means of electrostatic force spectroscopy

Bernhard Roling; André Schirmeisen; Hartmut Bracht; Ahmet Taskiran; Harald Fuchs; Sevi Murugavel; Frank Natrup

doi:10.1039/B418501C

Nanoscopic study of the ion dynamics in a LiAlSiO₄ glass ceramic by means of electrostatic force spectroscopy†

Bernhard Roling,^a André Schirmeisen,*^b Hartmut Bracht,^c Ahmet Taskiran,^b Harald Fuchs,^b Sevi Murugavel^a and Frank Natrup^c

Author affiliations

* Corresponding authors

^a Institut für Physikalische Chemie and Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Corrensstr. 30, Münster, Germany

^b Physikalisches Institut and CeNTech, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, Münster, Germany
E-mail: schirmeisen@uni-muenster.de

^c Institut für Materialphysik and CeNTech, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, Münster, Germany

Abstract

We use time-domain electrostatic force spectroscopy (TD-EFS) for characterising the dynamics of mobile ions in a partially crystallised LiAlSiO₄ glass ceramic, and we compare the results of the TD-EFS measurements to macroscopic electrical conductivity measurements. While the macroscopic conductivity spectra are determined by a single dynamic process with an activation energy of 0.72 eV, the TD-EFS measurements provide information about two distinct relaxation processes with different activation energies. Our results indicate that the faster process is due to ionic movements in the glassy phase and at the glass–crystal interfaces, while the slower process is caused by ionic movements in the crystallites. The spatially varying electrical relaxation strengths of the fast and of the slow process provide information about the nano- and mesostructure of the glass ceramic.

Article information

https://doi.org/10.1039/B418501C

Article type

Paper

Submitted

09 Dec 2004

Accepted

11 Feb 2005

First published

23 Feb 2005

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Phys. Chem. Chem. Phys., 2005,7, 1472-1475

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Nanoscopic study of the ion dynamics in a LiAlSiO₄ glass ceramic by means of electrostatic force spectroscopy

B. Roling, A. Schirmeisen, H. Bracht, A. Taskiran, H. Fuchs, S. Murugavel and F. Natrup, Phys. Chem. Chem. Phys., 2005, 7, 1472 DOI: 10.1039/B418501C

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