In-situ coated nanomagnets

Johanna Forsman; Pirjo Koskela; Ari Auvinen; Unto Tapper; Sebastiaan van Dijken; Jorma Jokiniemi

doi:10.1016/j.powtec.2012.08.020

In-situ coated nanomagnets

Johanna Forsman (Corresponding Author), Pirjo Koskela, Ari Auvinen, Unto Tapper, Sebastiaan van Dijken, Jorma Jokiniemi

Research output: Contribution to journal › Article › Scientific › peer-review

3 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 language	English
Pages (from-to)	15-21
Journal	Powder Technology
Volume	233
DOIs	https://doi.org/10.1016/j.powtec.2012.08.020
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

Keywords

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

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10.1016/j.powtec.2012.08.020

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title = "In-situ coated nanomagnets",

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.",

keywords = "Aerosol, chemical reactors, core-shell particles, magnetic particles, nanostructure, particle formation",

author = "Johanna Forsman and Pirjo Koskela and Ari Auvinen and Unto Tapper and {van Dijken}, Sebastiaan and Jorma Jokiniemi",

year = "2013",

doi = "10.1016/j.powtec.2012.08.020",

language = "English",

volume = "233",

pages = "15--21",

journal = "Powder Technology",

issn = "0032-5910",

publisher = "Elsevier",

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TY - JOUR

T1 - In-situ coated nanomagnets

AU - Forsman, Johanna

AU - Koskela, Pirjo

AU - Auvinen, Ari

AU - Tapper, Unto

AU - van Dijken, Sebastiaan

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

SN - 0032-5910

VL - 233

SP - 15

EP - 21

JO - Powder Technology

JF - Powder Technology

ER -

In-situ coated nanomagnets

Abstract

Keywords

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