Hard HfB 2 tip-coatings for ultrahigh density probe-based storage

Noureddine Tayebi, Angel Yanguas-Gil, Navneet Kumar, Yuegang Zhang, John R. Abelson, Yoshio Nishi, Qing Ma, Valluri R. Rao

Research output: Contribution to journalArticlepeer-review


Probe-tip mechanical wear is a fundamental issue facing probe-based storage, which can cause serious degradation of the write-read resolution over the device lifetime. HfB 2 conductive coatings grown at low temperatures using chemical vapor deposition possess high mechanical properties that are ideal for this technology. Here, we show that HfB 2 coated probe-tips can potentially enhance a previously demonstrated 5 km wear endurance mechanism developed using PtIr coated probe-tips to beyond 8 km, thereby increasing the lifetime of probe-based memory devices. We foresee the extension of this coating technology to other scanning probe based systems and nanoelectromechanical devices.

Original languageEnglish (US)
Article number091909
JournalApplied Physics Letters
Issue number9
StatePublished - Aug 27 2012

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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