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Study of optical recording bits by scanning surface potential microscopy

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

We demonstrate a convenient method for the determination of recording bits in phase-change media based on scanning surface potential microscopy using a conductive tip. Commercially available digital versatile disks (DVD) ±rewritable (RW) with initialization process are measured in experiments. The minimum size of the recording bits of DVD+RW, written by a commercial recorder, is around 425.22 nm. The mean work function (WF) value of the recording layer is found to be 4.27 eV from the contact potential difference images. After writing by a readwrite disk tester, the mean WF value of the amorphous bits has a drop of 15.46 meV. The results indicate that surface electronic energy of recorded regions is raised due to the writing process. © 2005 American Vacuum Society.
Original languageEnglish
Pages (from-to)663-665
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume23
Issue number4
DOIs
Publication statusPublished - Jul 2005
Externally publishedYes

Bibliographical note

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