Local chemical order in Al92Ce8 metallic glass: The role of 4f-electrons

Using a combination of the synchrotron X-ray absorption spectroscopy, transmission electron microscopy, vibrating magnetometry, Faraday's method and thermal analysis, we studied Al92Ce8 alloy in the glassy, crystalline and liquid states. The cerium in the alloy demonstrates mixed valence behavi...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2014-10, Vol.402, p.1-6
Main Authors: Uporov, S., Zubavichus, Y., Yaroslavtsev, A., Trofimova, N., Bykov, V., Ryltsev, R., Pryanichnikov, S., Sidorov, V., Shunyaev, K., Mudry, S., Zhovneruk, S., Murzakaev, A.
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Aluminum
Al–Ce
Bonding
Crystal structure
EXAFS
Liquids
Local structure
Magnetic properties
Metallic glasses
Physical properties
Synchrotrons
X-ray diffraction
X-rays
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Summary:Using a combination of the synchrotron X-ray absorption spectroscopy, transmission electron microscopy, vibrating magnetometry, Faraday's method and thermal analysis, we studied Al92Ce8 alloy in the glassy, crystalline and liquid states. The cerium in the alloy demonstrates mixed valence behavior with the noticeable portion of tetravalent states. The local order and physical properties of the investigated composition are discussed in the assumption of specific chemical bonding between Al and Ce with partial involvement of 4f-electrons. •The alloy demonstrates mixed valence behavior with the noticeable portion of tetravalent states.•Heterogeneous state of the melt and the existence of associates with strong chemical are revealed.•It is shown that electrons of 4f-band are involved in the chemical bonding.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2014.04.030