Title :
Microwave-assisted shingled magnetic recording
Author :
Greaves, S. ; Kanai, Y. ; Muraoka, H.
Author_Institution :
RIEC, Tohoku Univ., Sendai, Japan
Abstract :
Shingled recording has recently been introduced into hard disk drive products. The sharpness of transitions and track edges are controlled by the head field gradient. Microwave-assisted magnetic recording (MAMR) can increase the effective head field gradient through the application of a localised, high frequency (HF) magnetic field generated by a spin torque oscillator (STO). In this work we combine shingled recording and MAMR to determine the advantages and to quantify the influence of various write head designs.
Keywords :
disc drives; hard discs; magnetic heads; magnetic recording; hard disk drive products; head field gradient; high frequency magnetic field; microwave assisted shingled magnetic recording; spin torque oscillator; track edges; transition sharpness; Hafnium; Magnetic heads; Magnetic recording; Oscillators; Saturation magnetization; Signal to noise ratio; Switches;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157141
