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Micromagnetic Model Simulations Considering Write Head, Spin–Torque Oscillator, and Double-Layered Medium Altogether
- Source :
- IEEE Transactions on Magnetics. 55:1-13
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- Micromagnetic model simulations were performed to investigate spin–torque oscillators (STOs) integrated into the main pole–trailing shield (MP–TS) gap of the write head (integrated STO). First, the oscillation states of a tilted STO were investigated in a model comprising the write head, STO, and medium soft underlayer (SUL). We found that inserting the STO into a non-parallel MP–TS gap resulted in more stable oscillation. Second, we performed full micromagnetic simulations of the write head, STO, SUL, and recording layer (RL), and the oscillation of the tilted STO was investigated. We found that the RL affected the STO oscillation to some extent; however, the effect was smaller than that from the write head. We also discuss the calculation times for various structures with and without the RL, and with/without medium motion.
- Subjects :
- 010302 applied physics
Physics
Condensed matter physics
Magnetic noise
Oscillation
Recording layer
Double layered
Spin torque oscillators
01 natural sciences
Electronic, Optical and Magnetic Materials
0103 physical sciences
Electromagnetic shielding
Head (vessel)
Electrical and Electronic Engineering
Micromagnetics
Subjects
Details
- ISSN :
- 19410069 and 00189464
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Magnetics
- Accession number :
- edsair.doi...........27f559fdf1eea675e9eb4e4f8fc9f602