Fabrication of patterned magnetic nanomaterials for data storage media
JOM, cilt.64, sa.10, ss.1165-1173, 2012 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 64 Sayı: 10
- Basım Tarihi: 2012
- Doi Numarası: 10.1007/s11837-012-0440-z
- Dergi Adı: JOM
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1165-1173
- Bilecik Şeyh Edebali Üniversitesi Adresli: Evet
Özet
Patterned media (PM) for magnetic information storage have received increased attention in recent years as the primary candidate for 1 Terabit/in 2 or higher recording density for computer hard disk drives. A PM consists of a periodic array of well-defined magnetic islands, each of which can store one bit of data. In the simplest scheme, the structures could be magnetic pillars and dots with a single easy axis of magnetization. The direction of detected magnetization by the read/write head is interpreted as a binary signal 1 or 0. Some of the main technical issues in the PM include the difficulty in fabricating small nanoisland arrays in a periodic fashion over large areas, reliability/ reproducibility of magnetic bit characteristics, as well as wear and head flyability issues associated with the media surface roughness, and processing cost. This article deals with a recent investigation of various fabrication approaches, nanostructural features, and magnetic properties for the bit PM. © 2012 TMS.