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

Fingerprint

Copper
Coatings
Magnetic hysteresis
Oxidation
Saturation magnetization
Magnets
Hydrogen
Electric properties
Carbon
Optical properties
Temperature

Keywords

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

Cite this

Forsman, J., Koskela, P., Auvinen, A., Tapper, U., van Dijken, S., & Jokiniemi, J. (2013). In-situ coated nanomagnets. Powder Technology, 233, 15-21. https://doi.org/10.1016/j.powtec.2012.08.020
Forsman, Johanna ; Koskela, P. ; Auvinen, Ari ; Tapper, Unto ; van Dijken, S. ; Jokiniemi, Jorma. / In-situ coated nanomagnets. In: Powder Technology. 2013 ; Vol. 233. pp. 15-21.
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Forsman, J, Koskela, P, Auvinen, A, Tapper, U, van Dijken, S & Jokiniemi, J 2013, 'In-situ coated nanomagnets', Powder Technology, vol. 233, pp. 15-21. https://doi.org/10.1016/j.powtec.2012.08.020

In-situ coated nanomagnets. / Forsman, Johanna (Corresponding Author); Koskela, P.; Auvinen, Ari; Tapper, Unto; van Dijken, S.; Jokiniemi, Jorma.

In: Powder Technology, Vol. 233, 2013, p. 15-21.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - In-situ coated nanomagnets

AU - Forsman, Johanna

AU - Koskela, P.

AU - Auvinen, Ari

AU - Tapper, Unto

AU - van Dijken, S.

AU - Jokiniemi, Jorma

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - Aerosol

KW - chemical reactors

KW - core-shell particles

KW - magnetic particles

KW - nanostructure

KW - particle formation

U2 - 10.1016/j.powtec.2012.08.020

DO - 10.1016/j.powtec.2012.08.020

M3 - Article

VL - 233

SP - 15

EP - 21

JO - Powder Technology

JF - Powder Technology

SN - 0032-5910

ER -

Forsman J, Koskela P, Auvinen A, Tapper U, van Dijken S, Jokiniemi J. In-situ coated nanomagnets. Powder Technology. 2013;233:15-21. https://doi.org/10.1016/j.powtec.2012.08.020