Method and system for the individualized characterization of magnetic elements based on ferromagnetic resonance.
First Claim
1. Method for the individualized characterization of a magnetic element (12) based on ferromagnetic resonance, in which said magnetic element exhibits the property of ferromagnetic resonance and a resonance frequency of its own, said method comprising the following steps:
- application in a given area of a low-frequency electromagnetic field,simultaneous application in the same area of a electromagnetic wave of a high frequency the same as the characteristic resonance frequency of the magnetic element,insertion of the magnetic element in said given area, with the result that it absorbs the high-frequency electromagnetic wave with a frequency the same as that of the low-frequency electromagnetic field, so said wave is modulated,reception of this unique and individual modulated wave characteristic of each magnetic element, andassignment of said unique modulated wave to the magnetic element.
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Abstract
In a method and system for the characterization of a magnetic element based on ferromagnetic resonance, the magnetic element presents ferromagnetic resonance and its own characteristic resonance frequency. The system includes: mechanism for application of a low-frequency electromagnetic field in a given area; a mechanism for application of a high-frequency electromagnetic wave the same as the characteristic resonance frequency of the magnetic element in said same Area; and a control unit configured so as to control the simultaneous application of the low-frequency electromagnetic field so that in response to the introduction of the magnetic element in the area the magnetic element absorbs the high-frequency electromagnetic wave with a frequency the same as that of the low-frequency electromagnetic field, so the wave is modulated. The system also comprises: a mechanism for reception of this unique individual modulated wave characteristic of each element, and a mechanism for assignment of the unique modulated wave to the element.
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Citations
16 Claims
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1. Method for the individualized characterization of a magnetic element (12) based on ferromagnetic resonance, in which said magnetic element exhibits the property of ferromagnetic resonance and a resonance frequency of its own, said method comprising the following steps:
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application in a given area of a low-frequency electromagnetic field, simultaneous application in the same area of a electromagnetic wave of a high frequency the same as the characteristic resonance frequency of the magnetic element, insertion of the magnetic element in said given area, with the result that it absorbs the high-frequency electromagnetic wave with a frequency the same as that of the low-frequency electromagnetic field, so said wave is modulated, reception of this unique and individual modulated wave characteristic of each magnetic element, and assignment of said unique modulated wave to the magnetic element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. System for the characterization of a magnetic element (12) based on ferromagnetic resonance, said magnetic element (12) presenting the property of ferromagnetic resonance and a characteristic resonance frequency;
- the system comprises;
means of application of a low-frequency electromagnetic field (20) in a given area. means of application of a high-frequency electromagnetic wave (40) the same as the characteristic resonance frequency of the magnetic element in that same given area. means of control (10) configured so as to control the simultaneous application of said low-frequency electromagnetic field and said high-frequency electromagnetic wave, such that in response to the introduction of the magnetic element in said given area, the magnetic element absorbs the high-frequency electromagnetic wave with a frequency the same as that of the low-frequency electromagnetic field, so said wave is modulated;
the system also comprises;means of reception (61) of this unique and individual modulated wave characteristic of each magnetic element, and means of assignment (60, 70 10) of said unique modulated wave to the magnetic element. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- the system comprises;
Specification