Method for driving magneto-resistive element
AssigneeSony Corporation
InventorsYutaka Soda, Munekatsu Fukuyama, Jin Sato, Kiyoshi Ota
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Abstract
A method for driving a magneto-resistive effect element in which a bias magnetic field is applied by a bias conductor fed with a bias current to a magneto-resistive effect element whose resistivity is changed with an impressed magnetic field, wherein the improvement comprises supplying to said bias conductor a pulsed initial current having a pulse crest value higher than the bias current value prior to supplying said bias current. The MR head can be operated with MR characteristics with stable output and with highly sensitive MR characteristics.
Claims4
A method for driving a magneto-resistive effect element in which a bias magnetic field is applied by a bias conductor fed with a bias current to a magneto-resistive effect element whose resistivity is changed with an impressed magnetic field, wherein the improvement comprises:
- supplying to said bias conductor a pulsed initial current having a pulse crest value that is higher than the bias current value prior to supplying said bias current;
- and
- thereafter supplying said bias current to said bias conductor.
Dependencies are inferred from the claim text.