Atomic magnetometers for materials characterization

Michael V. Romalis, Hoan B. Dang

Research output: Contribution to journalReview article

24 Scopus citations

Abstract

Sensitive magnetometry has been established as a powerful technique for the characterization and testing of materials, with the most demanding applications relying on SQUID magnetometers operating at cryogenic temperatures. The recent development of compact, non-cryogenic atomic magnetometers with sub-femtotesla sensitivity and easy sample access has opened up a number of new possibilities. We give examples of sample thermal demagnetization measurements with sensitivity better than 10-9 emu/Hz up to 420 °C and of magnetic detection of water droplets on an aluminum surface. Recent research on magnetometry with laser-cooled atoms and color centers in diamond promises to extend the reach of atomic magnetic sensors to the micro- and nanoscale.

Original languageEnglish (US)
Pages (from-to)258-262
Number of pages5
JournalMaterials Today
Volume14
Issue number6
DOIs
StatePublished - Jun 1 2011

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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