Portal de Periódicos da CAPES

Improvement of Magnetic Recording Characteristics by Narrowing the Array Pitch of Nanohole Patterned Media

2005; Institute of Physics; Volume: 44; Issue: 10L Linguagem: Inglês

10.1143/jjap.44.l1355

1347-4065

Hirotaka Oshima, Hideyuki Kikuchi, Hiroshi Nakao, Takeshi Morikawa, Koji Matsumoto, Kazuyuki Nishio, Hideki Masuda, Ken‐ichi Itoh,

Block Copolymer Self-Assembly

Dynamic magnetic recording properties of Co-filled nanohole arrays were successfully investigated as perpendicular magnetic media via a flying giant-magnetoresistive head. By narrowing the Co nanopillar pitch, we observed suppression of the magnetic transition width and increase of the signal-to-noise ratio. The dynamic signals reflect magnetic field variation caused by the nanopillar arrangement on the tens of nanometers scale. These characteristics and the signal behavior suggest their possible application to ultrahigh-density magnetic recording.