Synthesis and magnetic properties of Co1-xIrx alloy nanoparticles for high-frequency applications

C. N. Chinnasamy; T. Ogawa; D. Hasegawa; H. T. Yang; S. D. Yoon; V. G. Harris; Migaku Takahashi

doi:10.1109/TMAG.2007.893868

Synthesis and magnetic properties of Co_1-xIr_x alloy nanoparticles for high-frequency applications

C. N. Chinnasamy, T. Ogawa, D. Hasegawa, H. T. Yang, S. D. Yoon, V. G. Harris, Migaku Takahashi

ENG - Electronic Engineering

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

6 Citations (Scopus)

Abstract

Co_1-xlr_x (x = 10, 20, and 30) alloy nanoparticles were prepared using a high-temperature chemical reduction technique in an inert atmosphere for the first time. High-resolution electron microscopy studies show the formation of nearly monodispersed Co_1-xIr_x alloy nanoparticles having the hexagonal close packed structure. The sizes of the particles were dictated by controlling the reaction parameters and the type of surfactants. Superconducting quantum interference device (SQUID) magnetometry studies showed soft magnetic behavior at 300 K and also at 5 K. The as-prepared, nearly dispersed nanoparticles were assembled and fixed on a polymer substrate. The microwave properties measured by ferromagnetic resonance at 9.61 GHz indicate a minimum line width of about 300 Oe.

Original language	English
Pages (from-to)	3112-3114
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	43
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2007.893868
Publication status	Published - 2007 Jun

Keywords

Chemical synthesis and high-frequency applications
Co-Ir alloy nanoparticles
Nanoparticles

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10.1109/TMAG.2007.893868

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title = "Synthesis and magnetic properties of Co1-xIrx alloy nanoparticles for high-frequency applications",

abstract = "Co1-xlrx (x = 10, 20, and 30) alloy nanoparticles were prepared using a high-temperature chemical reduction technique in an inert atmosphere for the first time. High-resolution electron microscopy studies show the formation of nearly monodispersed Co1-xIrx alloy nanoparticles having the hexagonal close packed structure. The sizes of the particles were dictated by controlling the reaction parameters and the type of surfactants. Superconducting quantum interference device (SQUID) magnetometry studies showed soft magnetic behavior at 300 K and also at 5 K. The as-prepared, nearly dispersed nanoparticles were assembled and fixed on a polymer substrate. The microwave properties measured by ferromagnetic resonance at 9.61 GHz indicate a minimum line width of about 300 Oe.",

keywords = "Chemical synthesis and high-frequency applications, Co-Ir alloy nanoparticles, Nanoparticles",

author = "Chinnasamy, {C. N.} and T. Ogawa and D. Hasegawa and Yang, {H. T.} and Yoon, {S. D.} and Harris, {V. G.} and Migaku Takahashi",

note = "Funding Information: This work was supported in part by Industrial Technology Research Grant Program in 2005 from New Energy and Industrial Technology Development Organization (NEDO) of Japan.",

year = "2007",

month = jun,

doi = "10.1109/TMAG.2007.893868",

language = "English",

volume = "43",

pages = "3112--3114",

journal = "IEEE Transactions on Magnetics",

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T1 - Synthesis and magnetic properties of Co1-xIrx alloy nanoparticles for high-frequency applications

AU - Chinnasamy, C. N.

AU - Ogawa, T.

AU - Hasegawa, D.

AU - Yang, H. T.

AU - Yoon, S. D.

AU - Harris, V. G.

AU - Takahashi, Migaku

N1 - Funding Information: This work was supported in part by Industrial Technology Research Grant Program in 2005 from New Energy and Industrial Technology Development Organization (NEDO) of Japan.

PY - 2007/6

Y1 - 2007/6

N2 - Co1-xlrx (x = 10, 20, and 30) alloy nanoparticles were prepared using a high-temperature chemical reduction technique in an inert atmosphere for the first time. High-resolution electron microscopy studies show the formation of nearly monodispersed Co1-xIrx alloy nanoparticles having the hexagonal close packed structure. The sizes of the particles were dictated by controlling the reaction parameters and the type of surfactants. Superconducting quantum interference device (SQUID) magnetometry studies showed soft magnetic behavior at 300 K and also at 5 K. The as-prepared, nearly dispersed nanoparticles were assembled and fixed on a polymer substrate. The microwave properties measured by ferromagnetic resonance at 9.61 GHz indicate a minimum line width of about 300 Oe.

AB - Co1-xlrx (x = 10, 20, and 30) alloy nanoparticles were prepared using a high-temperature chemical reduction technique in an inert atmosphere for the first time. High-resolution electron microscopy studies show the formation of nearly monodispersed Co1-xIrx alloy nanoparticles having the hexagonal close packed structure. The sizes of the particles were dictated by controlling the reaction parameters and the type of surfactants. Superconducting quantum interference device (SQUID) magnetometry studies showed soft magnetic behavior at 300 K and also at 5 K. The as-prepared, nearly dispersed nanoparticles were assembled and fixed on a polymer substrate. The microwave properties measured by ferromagnetic resonance at 9.61 GHz indicate a minimum line width of about 300 Oe.

KW - Chemical synthesis and high-frequency applications

KW - Co-Ir alloy nanoparticles

KW - Nanoparticles

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 6

ER -

Synthesis and magnetic properties of Co_1-xIr_x alloy nanoparticles for high-frequency applications

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Keywords

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