Resources Contact Us Home
GMR spin-valve element evaluation method, magnetic head manufacturing method, and magnetic storage device

Image Number 9 for United States Patent #7525771.

A method for evaluating a magnetized state of a pinned layer of a magnetoresistive spin-valve element used, together with a recording element, in a magnetic head, is provided. The method includes the steps of (a) supplying a first alternating current to the recording element, while supplying a second current for generating a magnetic field to the spin-valve element, the direction of the magnetic field generated by the second current being opposite to a prescribed direction of magnetization of the pinned layer adjacent to an antiferromagnetic layer; and (b) determining whether the magnetization of the pinned layer is inverted toward said direction opposite to the prescribed direction.

  Recently Added Patents
Methods of measurement of drug induced changes in cardiac ion channel function and associated apparatus
Method and apparatus for the secure identification of the owner of a portable device
Drug delivery system comprising polyoxazoline and a bioactive agent
Semiconductor device
Damper mechanism
Cross product/service management
Overhead mobile charger system for reaching and charging electric vehicles parked in a pair of adjacent and spaced-part rows of side-by-side parking spaces
  Randomly Featured Patents
Lid for a fruit cup
Compliance rules for dynamic bidding
Absorption heat pump system
Electric shaver
Head protection airbag
Method and system for selecting an optimal rearrangement sequence for a cross-connect communication matrix
Liquid chemical delivery system
Method of recovering primary and secondary amines
Squeeze switch particularly adapted for use with stuffed toys
Magnesium oxide catalyst