Fabrication of patterned magnetic nanomaterials for data storage media

Chulmin Choi, Kunbae Noh, Cihan Kuru, Li Han Chen, Tae Yeon Seong, Sungho Jin

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1165-1173
Number of pages9
JournalJOM
Volume64
Issue number10
DOIs
Publication statusPublished - 2012 Oct

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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