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DEVICE AND METHOD FOR MEASURING CHARACTERISTICS OF MAGNETORESISTANCE ELEMENT, AND DEVICE AND METHOD FOR MEASURING CHARACTERISTICS OF MAGNETIC REPRODUCING HEAD
DEVICE AND METHOD FOR MEASURING CHARACTERISTICS OF MAGNETORESISTANCE ELEMENT, AND DEVICE AND METHOD FOR MEASURING CHARACTERISTICS OF MAGNETIC REPRODUCING HEAD
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机译:测量磁阻元件特性的装置和方法,以及测量磁再现头特性的装置和方法
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摘要
PROBLEM TO BE SOLVED: To measure the local magnetic characteristics for evaluating more detailed characteristics about a magnetic reproducing head, for which the judgement of the normal/defective condition based on the conventional measuring method for the operational characteristics becomes difficult accompanying the miniaturization of the head.;SOLUTION: The periodically varied magnetic field is impressed by a probe 103 of magnetic material vibrating at a specified period and the DC magnetic field slowly changed with respect to the periodically varied magnetic field is impressed by a magnetic field generator 114 respectively on an MR head 102 whereon the specified current is impressed by a constant current source 113, and a resistance value of the MR head 102 changed in accordance with the impressed magnetic field intensity is detected by an AC amplifier 115 and a synchronization detector 116, then the magnetic field intensity differentiation of the resistance value - magnetic field property is measured by a signal processor 111.;COPYRIGHT: (C)2002,JPO
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