In-situ coated nanomagnets

Johanna Forsman (Corresponding Author), P. Koskela, Ari Auvinen, Unto Tapper, S. van Dijken, Jorma Jokiniemi

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    Nanomagnets with controlled size distribution are produced by continuous hydrogen reduction technique and coated in situ by carbon or copper. The copper layer can be oxidised ex situ. The coated nanomagnets are well-protected against oxidation occurring over time or in elevated temperatures. The optical and electrical properties of the magnets are controlled by coating. The coating can also be functionalised. The saturation magnetization of all nanomagnets is close to that of bulk, Co, indicating a highly crystallised structure and the avoidance of oxidation. Copper coating increased the measured magnetic hysteresis.
    Original languageEnglish
    Pages (from-to)15-21
    Number of pages7
    JournalPowder Technology
    Volume233
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Aerosol
    • chemical reactors
    • core-shell particles
    • magnetic particles
    • nanostructure
    • particle formation

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