Magneto-impedance element, and magnetic head, thin film magnetic head, azimuth sensor and autocanceler using the same
Patent 6183889 Issued on February 6, 2001. Estimated Expiration Date: 
August 27, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 27, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesFerrous metal glassy alloy Patent #: 5738733 Inventors
AssigneeApplicationNo. 141679 filed on 08/27/1998US Classes:148/304, Amorphous148/403, Amorphous, i.e., glassy257/E43.005, Selection of materials (EPO)360/126, Laminated360/313, Magnetoresistive (MR) reproducing head369/13.01, STORAGE OR RETRIEVAL BY SIMULTANEOUS APPLICATION OF DIVERSE TYPES OF ELECTROMAGNETIC RADIATION428/900MAGNETIC FEATUREExaminersPrimary: Kiliman, LeszekAttorney, Agent or FirmForeign Patent References
International ClassG11B 005/66Foreign Application Priority Data1997-08-28 JPAbstractA magneto-impedance element, showing a change in impedance in response to an external magnetic field when an alternating current is applied, is composed of a glassy alloy. The glassy alloy is composed of at least one base metal selected from the group consisting of Fe, Co and Ni; at least one additional metal selected from the group consisting of Zr, Nb, Ta, Hf, Mo, Ti and V; and B. The glassy alloy has a temperature region ƊTx, of the supercooling liquid zone of 20° C. or more which is represented by the equation ƊTx =Tx -Tg wherein Tx is the crystallization temperature and Tg is the glass transition temperature. A magnetic head, a thin film magnetic head, an azimuth sensor and an autocanceler are provided with the MI element.Other References
| |
