Variation in the ratio of Mg 2Co and MgCo 2 in amorphous-like mechanically alloyed Mg xCo 100-x using atomic pair distribution function analysis

Hyunjeong Kim; Jin Nakamura; Huaiyu Shao; Yumiko Nakamura; Etsuo Akiba; Karena W. Chapman; Peter J. Chupas; Thomas Proffen

doi:10.1524/zkri.2012.1496

Variation in the ratio of Mg ₂Co and MgCo ₂ in amorphous-like mechanically alloyed Mg _xCo _100-x using atomic pair distribution function analysis

Hyunjeong Kim
, Jin Nakamura
, Huaiyu Shao
, Yumiko Nakamura
, Etsuo Akiba
, Karena W. Chapman
, Peter J. Chupas
, Thomas Proffen

Chemistry

Stony Brook University

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

11 Scopus citations

Abstract

Mg ₂Co- and MgCo ₂-like local atomic arrangements in mechanically alloyed Mg _xCo _100-x were investigated using atomic pair distribution function (PDF) analysis derived from synchrotron X-ray total scattering data. We show that changes in Mg _xCo _100-x PDFs with x are well explained by the structural features of Mg ₂Co and MgCo ₂. This strongly supports our two-phase model picture where Mg ₂Co-like phase continuously increases while MgCo ₂ decreases with increasing Mg content in Mg _xCo _100-x.

Original language	English
Pages (from-to)	299-303
Number of pages	5
Journal	Zeitschrift fur Kristallographie
Volume	227
Issue number	5
DOIs	https://doi.org/10.1524/zkri.2012.1496
State	Published - May 2012

Keywords

Amorphous materials
Atomic pair distribution function
Hydrogen storage materials
Local structure
Mechanical alloying

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10.1524/zkri.2012.1496

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title = "Variation in the ratio of Mg 2Co and MgCo 2 in amorphous-like mechanically alloyed Mg xCo 100-x using atomic pair distribution function analysis",

abstract = "Mg 2Co- and MgCo 2-like local atomic arrangements in mechanically alloyed Mg xCo 100-x were investigated using atomic pair distribution function (PDF) analysis derived from synchrotron X-ray total scattering data. We show that changes in Mg xCo 100-x PDFs with x are well explained by the structural features of Mg 2Co and MgCo 2. This strongly supports our two-phase model picture where Mg 2Co-like phase continuously increases while MgCo 2 decreases with increasing Mg content in Mg xCo 100-x.",

keywords = "Amorphous materials, Atomic pair distribution function, Hydrogen storage materials, Local structure, Mechanical alloying",

author = "Hyunjeong Kim and Jin Nakamura and Huaiyu Shao and Yumiko Nakamura and Etsuo Akiba and Chapman, \{Karena W.\} and Chupas, \{Peter J.\} and Thomas Proffen",

year = "2012",

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doi = "10.1524/zkri.2012.1496",

language = "English",

volume = "227",

pages = "299--303",

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T1 - Variation in the ratio of Mg 2Co and MgCo 2 in amorphous-like mechanically alloyed Mg xCo 100-x using atomic pair distribution function analysis

AU - Kim, Hyunjeong

AU - Nakamura, Jin

AU - Shao, Huaiyu

AU - Nakamura, Yumiko

AU - Akiba, Etsuo

AU - Chapman, Karena W.

AU - Chupas, Peter J.

AU - Proffen, Thomas

PY - 2012/5

Y1 - 2012/5

N2 - Mg 2Co- and MgCo 2-like local atomic arrangements in mechanically alloyed Mg xCo 100-x were investigated using atomic pair distribution function (PDF) analysis derived from synchrotron X-ray total scattering data. We show that changes in Mg xCo 100-x PDFs with x are well explained by the structural features of Mg 2Co and MgCo 2. This strongly supports our two-phase model picture where Mg 2Co-like phase continuously increases while MgCo 2 decreases with increasing Mg content in Mg xCo 100-x.

AB - Mg 2Co- and MgCo 2-like local atomic arrangements in mechanically alloyed Mg xCo 100-x were investigated using atomic pair distribution function (PDF) analysis derived from synchrotron X-ray total scattering data. We show that changes in Mg xCo 100-x PDFs with x are well explained by the structural features of Mg 2Co and MgCo 2. This strongly supports our two-phase model picture where Mg 2Co-like phase continuously increases while MgCo 2 decreases with increasing Mg content in Mg xCo 100-x.

KW - Amorphous materials

KW - Atomic pair distribution function

KW - Hydrogen storage materials

KW - Local structure

KW - Mechanical alloying

UR - https://www.scopus.com/pages/publications/84865023143

U2 - 10.1524/zkri.2012.1496

DO - 10.1524/zkri.2012.1496

M3 - Article

SN - 0044-2968

VL - 227

SP - 299

EP - 303

JO - Zeitschrift fur Kristallographie

JF - Zeitschrift fur Kristallographie

IS - 5

ER -

Variation in the ratio of Mg ₂Co and MgCo ₂ in amorphous-like mechanically alloyed Mg _xCo _100-x using atomic pair distribution function analysis

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Keywords

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