Volume 69, Number 2, January 2005
|Page(s)||270 - 276|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||17 December 2004|
Low-temperature microwave emission from molecular clusters
Departament de Física Fonamental, Universitat de Barcelona Avda. Diagonal 647, 08028 Barcelona, Spain
Accepted: 12 November 2004
We investigate the experimental detection of the electromagnetic radiation generated in the fast magnetization reversal in -acetate at low temperatures. In our experiments we used large single crystals and assemblies of several small single crystals of -acetate placed inside a cylindrical stainless-steel waveguide in which an hot-electron device was also placed to detect the radiation. All this was set inside a SQUID magnetometer that allowed to change the magnetic field and measure the magnetic moment and the temperature of the sample as the detected simultaneously the radiation emitted from the molecular magnets. Our data show a sequential process in which the fast inversion of the magnetic moment first occurs, then the radiation is detected by the device, and finally the temperature of the sample increases during 15 to subsequently recover its original value in several hundred milliseconds.
PACS: 75.50.Xx – Molecular magnets / 75.45.+j – Macroscopic quantum phenomena in magnetic systems
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.