dorsal/arxiv
View SchemaOff-diagonal impedance in amorphous wires and application to linear magnetic sensors
| Authors | S. I. Sandacci, D. P. Makhnovskiy, L. V. Panina, K. Mohri, Y. Honkura |
|---|---|
| Categories | |
| ArXiv ID | physics/0402123 |
| URL | https://arxiv.org/abs/physics/0402123 |
| DOI | 10.1109/TMAG.2004.835676 |
Abstract
The magnetic-field behaviour of the off-diagonal impedance in Co-based amorphous wires is investigated under the condition of sinusoidal (50 MHz) and pulsed (5 ns rising time) current excitations. For comparison, the field characteristics of the diagonal impedance are measured as well. In general, when an alternating current is applied to a magnetic wire the voltage signal is generated not only across the wire but also in the coil mounted on it. These voltages are related with the diagonal and off-diagonal impedances, respectively. It is demonstrated that these impedances have a different behaviour as a function of axial magnetic field: the former is symmetrical and the latter is antisymmetrical with a near linear portion within a certain field interval. In the case of the off-diagonal response, the dc bias current eliminating circular domains is necessary. The pulsed excitation that combines both high and low frequency harmonics produces the off-diagonal voltage response without additional bias current or field. This suits ideal for a practical sensor circuit design. The principles of operation of a linear magnetic sensor based on C-MOS transistor circuit are discussed.
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"abstract": "The magnetic-field behaviour of the off-diagonal impedance in Co-based\namorphous wires is investigated under the condition of sinusoidal (50 MHz) and\npulsed (5 ns rising time) current excitations. For comparison, the field\ncharacteristics of the diagonal impedance are measured as well. In general,\nwhen an alternating current is applied to a magnetic wire the voltage signal is\ngenerated not only across the wire but also in the coil mounted on it. These\nvoltages are related with the diagonal and off-diagonal impedances,\nrespectively. It is demonstrated that these impedances have a different\nbehaviour as a function of axial magnetic field: the former is symmetrical and\nthe latter is antisymmetrical with a near linear portion within a certain field\ninterval. In the case of the off-diagonal response, the dc bias current\neliminating circular domains is necessary. The pulsed excitation that combines\nboth high and low frequency harmonics produces the off-diagonal voltage\nresponse without additional bias current or field. This suits ideal for a\npractical sensor circuit design. The principles of operation of a linear\nmagnetic sensor based on C-MOS transistor circuit are discussed.",
"arxiv_id": "physics/0402123",
"authors": [
"S. I. Sandacci",
"D. P. Makhnovskiy",
"L. V. Panina",
"K. Mohri",
"Y. Honkura"
],
"categories": [
"physics.ins-det"
],
"doi": "10.1109/TMAG.2004.835676",
"title": "Off-diagonal impedance in amorphous wires and application to linear magnetic sensors",
"url": "https://arxiv.org/abs/physics/0402123"
},
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