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