Study on Co-Cr alloy cluster assembling process by magneto-optical Kerr effect

T. Hihara, K. Sumiyama, T. J. Konno, K. Wakoh

Research output: Contribution to journalArticlepeer-review

Abstract

Nanometric Co-10at% Cr alloy-cluster assembled films have been produced by a plasma-gas-condensation method, and examined by transmission electron microscopy and the magneto-optical Kerr effect. With increasing the average weight thickness t we found that the Co-Cr clusters coalesce to form a large network. This formation took place more rapidly among clusters with an average cluster size of d = 2.4 nm than with those of d = 4.6 nm. The isolated Co-Cr clusters are superparamagnetic when t<2 nm. With increasing t, the transition from superparamagnet to ferromagnet occurs more rapidly in the system with d = 2.4 nm than in that with d = 4.6 nm, in accordance with their morphological characteristics.

Original languageEnglish
Pages (from-to)397-405
Number of pages9
JournalPhysica Status Solidi (A) Applied Research
Volume172
Issue number2
DOIs
Publication statusPublished - 1999 Apr 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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