Formation of nano-porous GeOx by de-alloying of an Al-Ge-Mn amorphous alloy

K. C. Kim; S. H. Park; M. Y. Na; H. J. Chang; W. T. Kim; N. Mattern; J. Eckert; Y. Yokoyama; K. B. Kim; D. H. Kim

doi:10.1016/j.scriptamat.2015.03.022

Formation of nano-porous GeO_x by de-alloying of an Al-Ge-Mn amorphous alloy

K. C. Kim, S. H. Park, M. Y. Na, H. J. Chang, W. T. Kim, N. Mattern, J. Eckert, Y. Yokoyama, K. B. Kim, D. H. Kim

Department of Materials Science and Engineering

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

11 Citations (Scopus)

Abstract

The present study shows that nanometer-scale amorphous phase separation occurs by spinodal decomposition of the undercooled liquid in a melt-spun Al₆₀Ge₃₀Mn₁₀ alloy, although there is no atomic pair with positive enthalpy of mixing. By adopting a proper de-alloying process, an interconnected nano-porous germanium oxide with an amorphous structure is successfully synthesized. The present study shows that nano-porous amorphous germanium oxide can be easily obtained by de-alloying of Al-based amorphous alloys with nm-scale composition fluctuation.

Original language	English
Pages (from-to)	49-52
Number of pages	4
Journal	Scripta Materialia
Volume	104
DOIs	https://doi.org/10.1016/j.scriptamat.2015.03.022
Publication status	Published - 2015 Jul 15

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory Program of the Korean Ministry of Education, Science and Technology .

Publisher Copyright:
© 2015 Acta Materialia Inc.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2015.03.022

Cite this

@article{8315d8c75abe4dbe911c08be4513871a,

title = "Formation of nano-porous GeOx by de-alloying of an Al-Ge-Mn amorphous alloy",

abstract = "The present study shows that nanometer-scale amorphous phase separation occurs by spinodal decomposition of the undercooled liquid in a melt-spun Al60Ge30Mn10 alloy, although there is no atomic pair with positive enthalpy of mixing. By adopting a proper de-alloying process, an interconnected nano-porous germanium oxide with an amorphous structure is successfully synthesized. The present study shows that nano-porous amorphous germanium oxide can be easily obtained by de-alloying of Al-based amorphous alloys with nm-scale composition fluctuation.",

author = "Kim, {K. C.} and Park, {S. H.} and Na, {M. Y.} and Chang, {H. J.} and Kim, {W. T.} and N. Mattern and J. Eckert and Y. Yokoyama and Kim, {K. B.} and Kim, {D. H.}",

note = "Funding Information: This work was supported by the Global Research Laboratory Program of the Korean Ministry of Education, Science and Technology . Publisher Copyright: {\textcopyright} 2015 Acta Materialia Inc.",

year = "2015",

month = jul,

day = "15",

doi = "10.1016/j.scriptamat.2015.03.022",

language = "English",

volume = "104",

pages = "49--52",

journal = "Scripta Materialia",

issn = "1359-6462",

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TY - JOUR

T1 - Formation of nano-porous GeOx by de-alloying of an Al-Ge-Mn amorphous alloy

AU - Kim, K. C.

AU - Park, S. H.

AU - Na, M. Y.

AU - Chang, H. J.

AU - Kim, W. T.

AU - Mattern, N.

AU - Eckert, J.

AU - Yokoyama, Y.

AU - Kim, K. B.

AU - Kim, D. H.

N1 - Funding Information: This work was supported by the Global Research Laboratory Program of the Korean Ministry of Education, Science and Technology . Publisher Copyright: © 2015 Acta Materialia Inc.

PY - 2015/7/15

Y1 - 2015/7/15

N2 - The present study shows that nanometer-scale amorphous phase separation occurs by spinodal decomposition of the undercooled liquid in a melt-spun Al60Ge30Mn10 alloy, although there is no atomic pair with positive enthalpy of mixing. By adopting a proper de-alloying process, an interconnected nano-porous germanium oxide with an amorphous structure is successfully synthesized. The present study shows that nano-porous amorphous germanium oxide can be easily obtained by de-alloying of Al-based amorphous alloys with nm-scale composition fluctuation.

AB - The present study shows that nanometer-scale amorphous phase separation occurs by spinodal decomposition of the undercooled liquid in a melt-spun Al60Ge30Mn10 alloy, although there is no atomic pair with positive enthalpy of mixing. By adopting a proper de-alloying process, an interconnected nano-porous germanium oxide with an amorphous structure is successfully synthesized. The present study shows that nano-porous amorphous germanium oxide can be easily obtained by de-alloying of Al-based amorphous alloys with nm-scale composition fluctuation.

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