HIGH FREQUENCY ASSIST MAGNETIC HEAD

PROBLEM TO BE SOLVED: To provide a high frequency assist magnetic head capable of handling a higher recording density.SOLUTION: In a high frequency assist magnetic head, when the drive current of a spin torque oscillator is 0, the magnetization direction of the spin injection layer is identical irre...

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Bibliographic Details
Main Authors NARITA NAOYUKI, YAMADA KENICHIRO, TAGUCHI TOMOKO, MATSUMOTO TAKUYA
Format Patent
LanguageEnglish
Japanese
Published 08.12.2016
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide a high frequency assist magnetic head capable of handling a higher recording density.SOLUTION: In a high frequency assist magnetic head, when the drive current of a spin torque oscillator is 0, the magnetization direction of the spin injection layer is identical irrespective of the polarity of a recording current; and when the drive current of the spin torque oscillator is not 0, the magnetization direction of the spin injection layer responses to the polarity of the recording current.SELECTED DRAWING: Figure 1 【課題】さらなる高記録密度に対応する高周波アシスト磁気ヘッドを得る。【解決手段】スピントルク発振子の駆動電流が０の場合には、記録電流の極性によらず前記スピン注入層の磁化方向は同一であり、スピントルク発振子の駆動電流が０でない場合には、記録電流の極性に応じて、スピン注入層の磁化方向が応答する高周波アシスト磁気ヘッド。【選択図】図１
Bibliography:Application Number: JP20150085263