Magnetic decoupling in nanocrystalline systems

Research output: Contribution to journalArticle

Abstract

Anomalous composition dependences of the Curie temperature of the residual amorphous phase in nanocrystalline Fe92-xBxZr7Cu1 (2 ≤ x ≤ 23) alloys were studied by Mössbauer and magnetization measurements. The observed large (almost 300 K) increase with respect to that of the precursor amorphous phase at low B content is attributed to the volume effect. Mössbauer line broadening shows the presence of superparamagnetic relaxation of the bcc magnetization in nanocrystalline Fe74B18Zr7Cu1 well below the Curie temperature of the residual amorphous phase suggesting that interphase exchange coupling is weaker than the dipolar magnetic fields.

Original languageEnglish
Pages (from-to)301-304
Number of pages4
JournalPhysica Status Solidi (A) Applied Research
Volume189
Issue number2
DOIs
Publication statusPublished - Feb 2002

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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