Device for detecting magnetic fields and related detecting methods
AssigneeC.R.F. Societa Consortile per Azioni
InventorsDaniele Pullini, Anatolii Zvezdine, Konstantyne Zvezdine
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Abstract
A device for detecting magnetic fields, of the type comprising at least one element made of hard magnetic material (12) and an element made of soft magnetic material (13) associated to an element made of semiconductor material (11), means (15) for forcing a current (I) in said semiconductor material (11), characterised in that said element made of hard magnetic material (12) and element made of soft magnetic material (13) are positioned in planar fashion on said element made of semiconductor material (11).
Claims13
A device for detecting magnetic fields, of the type comprising at least one element made of hard magnetic material (12) and an element made of soft magnetic material (13) associated to an element made of semiconductor material (11), means (15;
- 45) for forcing a current (I) in said semiconductor material (11), characterised in that said element made of hard magnetic material (12) and element made of soft magnetic material (13) are positioned in planar fashion on said element made of semiconductor material (11).
A method for detecting magnetic fields, of the type providing at least one element made of hard magnetic material (12), associated to a permanent magnetisation (MP) and one element made of soft magnetic material (13) associated to a temporary magnetisation (MT) induced by an external magnetic field (H) characterised in that it further comprises the operations of:
- arranging the element of hard magnetic material (12) and the element of soft magnetic material (13) in such a way that the respective temporary magnetisation (MT) and permanent magnetisation (MP) lie substantially in one plane;
- forcing a current (I) in a region of semiconductor material (14) in said plane located between said element of hard magnetic material (12) and element of soft magnetic material (13);
- measuring the value of resistance in said region (14) of semiconductor material according to the values assumed by an external magnetic field (H).
Dependencies are inferred from the claim text.