Synthesis and Characterization of Structure Controlled Nano-cobalt Particles

Shiqiang Hui; Mingzhong Wu; Shihui Ge; Dajing Yan; Y. D. Zhang; T. D. Xiao; M. J. Yacaman; M. Miki-Yoshida; W. A. Hines; J. I. Budnick

Synthesis and Characterization of Structure Controlled Nano-cobalt Particles

Shiqiang Hui, Mingzhong Wu, Shihui Ge, Dajing Yan, Y. D. Zhang, T. D. Xiao, M. J. Yacaman, M. Miki-Yoshida, W. A. Hines, J. I. Budnick

Research output: Contribution to journal › Conference article › peer-review

6 Scopus citations

Abstract

Nanostructured cobalt particles with and without a ceramic coating have been synthesized using a wet chemical method. The structure and magnetic properties of synthesized powder were characterized using x-ray diffraction ("XRD"), high-resolution transmission electron microscopy ("HRTEM"), and a Quantum Design (SQUID) magnetometer. The cobalt nanoparticles are of either face-centered cubic ("fcc") and/or hexagonally close-packed ("hcp") crystalline structures. The average grain size is ∼14 nm for cobalt (either fcc or hcp) with an amorphous silica coating, and the average grain size is ∼9 nm for hcp cobalt and 26 nm for fcc cobalt without a silica coating. The effect of annealing temperature on grain size and magnetic properties are addressed.

Original language	English (US)
Pages (from-to)	159-164
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	755
State	Published - 2003
Externally published	Yes
Event	Solid-State Chemistry of Inorganic Materials IV - Boston, MA, United States Duration: Dec 2 2002 → Dec 6 2002

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Synthesis and Characterization of Structure Controlled Nano-cobalt Particles",

abstract = "Nanostructured cobalt particles with and without a ceramic coating have been synthesized using a wet chemical method. The structure and magnetic properties of synthesized powder were characterized using x-ray diffraction ({"}XRD{"}), high-resolution transmission electron microscopy ({"}HRTEM{"}), and a Quantum Design (SQUID) magnetometer. The cobalt nanoparticles are of either face-centered cubic ({"}fcc{"}) and/or hexagonally close-packed ({"}hcp{"}) crystalline structures. The average grain size is ∼14 nm for cobalt (either fcc or hcp) with an amorphous silica coating, and the average grain size is ∼9 nm for hcp cobalt and 26 nm for fcc cobalt without a silica coating. The effect of annealing temperature on grain size and magnetic properties are addressed.",

author = "Shiqiang Hui and Mingzhong Wu and Shihui Ge and Dajing Yan and Zhang, {Y. D.} and Xiao, {T. D.} and Yacaman, {M. J.} and M. Miki-Yoshida and Hines, {W. A.} and Budnick, {J. I.}",

year = "2003",

language = "English (US)",

volume = "755",

pages = "159--164",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Solid-State Chemistry of Inorganic Materials IV ; Conference date: 02-12-2002 Through 06-12-2002",

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TY - JOUR

T1 - Synthesis and Characterization of Structure Controlled Nano-cobalt Particles

AU - Hui, Shiqiang

AU - Wu, Mingzhong

AU - Ge, Shihui

AU - Yan, Dajing

AU - Zhang, Y. D.

AU - Xiao, T. D.

AU - Yacaman, M. J.

AU - Miki-Yoshida, M.

AU - Hines, W. A.

AU - Budnick, J. I.

PY - 2003

Y1 - 2003

N2 - Nanostructured cobalt particles with and without a ceramic coating have been synthesized using a wet chemical method. The structure and magnetic properties of synthesized powder were characterized using x-ray diffraction ("XRD"), high-resolution transmission electron microscopy ("HRTEM"), and a Quantum Design (SQUID) magnetometer. The cobalt nanoparticles are of either face-centered cubic ("fcc") and/or hexagonally close-packed ("hcp") crystalline structures. The average grain size is ∼14 nm for cobalt (either fcc or hcp) with an amorphous silica coating, and the average grain size is ∼9 nm for hcp cobalt and 26 nm for fcc cobalt without a silica coating. The effect of annealing temperature on grain size and magnetic properties are addressed.

AB - Nanostructured cobalt particles with and without a ceramic coating have been synthesized using a wet chemical method. The structure and magnetic properties of synthesized powder were characterized using x-ray diffraction ("XRD"), high-resolution transmission electron microscopy ("HRTEM"), and a Quantum Design (SQUID) magnetometer. The cobalt nanoparticles are of either face-centered cubic ("fcc") and/or hexagonally close-packed ("hcp") crystalline structures. The average grain size is ∼14 nm for cobalt (either fcc or hcp) with an amorphous silica coating, and the average grain size is ∼9 nm for hcp cobalt and 26 nm for fcc cobalt without a silica coating. The effect of annealing temperature on grain size and magnetic properties are addressed.

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M3 - Conference article

AN - SCOPUS:0242354130

SN - 0272-9172

VL - 755

SP - 159

EP - 164

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Solid-State Chemistry of Inorganic Materials IV

Y2 - 2 December 2002 through 6 December 2002

ER -

Synthesis and Characterization of Structure Controlled Nano-cobalt Particles

Abstract

ASJC Scopus subject areas

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