Presentation Information
[10p-PB3-22]TMR Sensor with a Synthetic Ferrimagnetic Free Layer for a Quasi-differential HDD Reader
〇Yuji Nakagawa1, Tazumi Nagasawa1, Masayuki Takagishi1, Naoyuki Narita1, Tomoyuki Maeda1 (1.Toshiba Corp. Lab.)
Keywords:
HDD,TMR sensor,Reader
HDDs are primary storage devices in data centers. To achieve higher recording density, we propose an HDD reader employing a synthetic ferrimagnetic free layer in a TMR sensor. The proposed structure enhances the signal in the bit transition region while maintaining the signal at the bit center, resulting in a quasi-differential waveform and improved resolution. We present micromagnetic simulation results of the proposed structure.