Effect of reaction time on formation of CoNi particles prepared via the polyol method

Young Min Lee; G. W. Qin; Chan Gyu Lee; Bon Heun Koo; Kew Yul Moon; Y. Shimada; O. Kitakami

doi:10.1007/BF03027806

Effect of reaction time on formation of CoNi particles prepared via the polyol method

Young Min Lee, G. W. Qin, Chan Gyu Lee, Bon Heun Koo, Kew Yul Moon, Y. Shimada, O. Kitakami

Division of Inorganic Material Research

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

10 Citations (Scopus)

Abstract

CoNi alloy particles were synthesized via the polyol process. Variations of the lattice constant, the mean size and composition, and the magnetic properties as functions of reaction time were evaluated by using X-ray diffractometry, field emission scanning electron microscopy, and vibrating sample magnetometer, respectively. The mean size of the obtained CoNi particles did not change from about 500 nm for up to 2 h of reaction time but increased to about 700 nm at a reaction time of 4 h. It was found that the Co composition of the CoNi alloy decreased as the reaction time increased at 180°C. This indicates that the reduction of Co²⁺ is easier than that of Ni ²⁺. The magnetic properties showed that the CoNi alloy particles are typical soft magnetic materials.

Original language	English
Pages (from-to)	207-210
Number of pages	4
Journal	Metals and Materials International
Volume	13
Issue number	3
DOIs	https://doi.org/10.1007/BF03027806
Publication status	Published - 2007 Jun

Keywords

CoNi alloy particles
FESEM
Polyol process
Reaction time
VSM
XRD

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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title = "Effect of reaction time on formation of CoNi particles prepared via the polyol method",

abstract = "CoNi alloy particles were synthesized via the polyol process. Variations of the lattice constant, the mean size and composition, and the magnetic properties as functions of reaction time were evaluated by using X-ray diffractometry, field emission scanning electron microscopy, and vibrating sample magnetometer, respectively. The mean size of the obtained CoNi particles did not change from about 500 nm for up to 2 h of reaction time but increased to about 700 nm at a reaction time of 4 h. It was found that the Co composition of the CoNi alloy decreased as the reaction time increased at 180°C. This indicates that the reduction of Co2+ is easier than that of Ni 2+. The magnetic properties showed that the CoNi alloy particles are typical soft magnetic materials.",

keywords = "CoNi alloy particles, FESEM, Polyol process, Reaction time, VSM, XRD",

author = "Lee, {Young Min} and Qin, {G. W.} and Lee, {Chan Gyu} and Koo, {Bon Heun} and Moon, {Kew Yul} and Y. Shimada and O. Kitakami",

note = "Funding Information: Young-Min Lee gratefully acknowledges the financial support of the Ministry of Education and Human Resources Development (MOE) and the Ministry of Commerce, Industry, and Energy (MOCIE) though the fostering project of the Industrial-Academic Cooperation Centered University. In addition, the other coauthors would like to thank the International Cooperation Research Program of the Ministry of Science and Technology (No. M60401000169-06A0100-16910) for its support.",

year = "2007",

month = jun,

doi = "10.1007/BF03027806",

language = "English",

volume = "13",

pages = "207--210",

journal = "Metals and Materials International",

issn = "1598-9623",

publisher = "Korean Institute of Metals and Materials",

number = "3",

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T1 - Effect of reaction time on formation of CoNi particles prepared via the polyol method

AU - Lee, Young Min

AU - Qin, G. W.

AU - Lee, Chan Gyu

AU - Koo, Bon Heun

AU - Moon, Kew Yul

AU - Shimada, Y.

AU - Kitakami, O.

N1 - Funding Information: Young-Min Lee gratefully acknowledges the financial support of the Ministry of Education and Human Resources Development (MOE) and the Ministry of Commerce, Industry, and Energy (MOCIE) though the fostering project of the Industrial-Academic Cooperation Centered University. In addition, the other coauthors would like to thank the International Cooperation Research Program of the Ministry of Science and Technology (No. M60401000169-06A0100-16910) for its support.

PY - 2007/6

Y1 - 2007/6

N2 - CoNi alloy particles were synthesized via the polyol process. Variations of the lattice constant, the mean size and composition, and the magnetic properties as functions of reaction time were evaluated by using X-ray diffractometry, field emission scanning electron microscopy, and vibrating sample magnetometer, respectively. The mean size of the obtained CoNi particles did not change from about 500 nm for up to 2 h of reaction time but increased to about 700 nm at a reaction time of 4 h. It was found that the Co composition of the CoNi alloy decreased as the reaction time increased at 180°C. This indicates that the reduction of Co2+ is easier than that of Ni 2+. The magnetic properties showed that the CoNi alloy particles are typical soft magnetic materials.

AB - CoNi alloy particles were synthesized via the polyol process. Variations of the lattice constant, the mean size and composition, and the magnetic properties as functions of reaction time were evaluated by using X-ray diffractometry, field emission scanning electron microscopy, and vibrating sample magnetometer, respectively. The mean size of the obtained CoNi particles did not change from about 500 nm for up to 2 h of reaction time but increased to about 700 nm at a reaction time of 4 h. It was found that the Co composition of the CoNi alloy decreased as the reaction time increased at 180°C. This indicates that the reduction of Co2+ is easier than that of Ni 2+. The magnetic properties showed that the CoNi alloy particles are typical soft magnetic materials.

KW - CoNi alloy particles

KW - FESEM

KW - Polyol process

KW - Reaction time

KW - VSM

KW - XRD

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