Issue |
Europhys. Lett.
Volume 56, Number 5, December 2001
|
|
---|---|---|
Page(s) | 690 - 694 | |
Section | Condensed matter: structure, mechanical and thermal properties | |
DOI | https://doi.org/10.1209/epl/i2001-00575-8 | |
Published online | 01 December 2003 |
Magnetic-field effects in non-magnetic glasses
1
Physikalisch-Technische Bundesanstalt - Abbestraße 2-12,
D-10587 Berlin, Germany
2
Kirchhoff-Institut für Physik, Universität Heidelberg
Albert-Ueberle-Straße
3-5, D-69120 Heidelberg, Germany
Received:
13
August
2001
Accepted:
14
September
2001
Recently, it was found that the multi-component glass
a--
-
exhibits unusual magnetic
properties at very low temperatures. Thus the question arises
whether this is a specialty of that particular glass or a more
general phenomenon. We report here on our studies of the magnetic-field
dependence of the dielectric properties of the borosilicate
glass BK7 which contains only a negligible amount of magnetic
impurities. Since this glass also responds sensitively to magnetic
fields, our investigations demonstrate that the reaction of glasses
to magnetic fields is not caused by magnetic impurities but reflects
a more general phenomenon. In addition, we have observed that the
variation of the dielectric constant and the loss angle with
magnetic field depend on the amplitude of the electric field that is
used to measure the glass capacitance. We present the data and
discuss possible origins of the magnetic-field phenomena in
non-magnetic glasses.
PACS: 61.43.Fs – Glasses / 75.20.Ck – Nonmetals / 77.22.-d – Dielectric properties of solids and liquids
© EDP Sciences, 2001
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