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Micron-sized planar transformer for electromagnetic flux guidance and confinement.

Micron-sized planar transformer for electromagnetic flux guidance and confinement.

Authors :
Kerner, C.
Magnus, W.
Golubovic, D. S.
van Haesendonck, C.
Moshchalkov, V. V.
Source :
Applied Physics Letters; 12/13/2004, Vol. 85 Issue 24, p6013-6015, 3p, 2 Diagrams, 3 Graphs
Publication Year :
2004

Abstract

We have studied electromagnetic flux guidance and confinement effects in NiFe cores, interconnecting three Al rings, to form a mesoscopic transformer-like device. Applying ac signals (of low amplitude and kHz frequency) to the contact pads of a semiclosed ring induced time-varying magnetic fields, which could be transferred to a nearby, closed ring, via the aid of a NiFe core. Similarly, a second core carried the fields of this ring, resulting from the induced signals, over to a third, semiclosed ring where readouts were performed over an applied load, using a lock-in amplifier. Highly linear curves of output versus input signal at stable phase were obtained with effective mutual inductance in the μH regime, giving an improvement of the order of 10<superscript>6</superscript> on the free field. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00036951
Volume :
85
Issue :
24
Database :
Complementary Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
15331835
Full Text :
https://doi.org/10.1063/1.1830688