Volume 628, Issue 3 pp. 553-558
Article

Neutron Diffraction Investigation of Liquid Alkali Metal—Gallium Alloys. Giant Cluster Formation?

M. Alvarez

M. Alvarez

Madrid/Spain, Instituto de Quimica Fisica Rocasolano

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E. Lomba

E. Lomba

Madrid/Spain, Instituto de Quimica Fisica Rocasolano

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P. Verkerk

P. Verkerk

Delft/The Netherlands, Interfacultair Reactor Instituut, Delft University of Technology

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S. A. van der Aart

S. A. van der Aart

Delft/The Netherlands, Interfacultair Reactor Instituut, Delft University of Technology

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M. Bionducci

M. Bionducci

Gif-sur-Yvette/France, Laboratoire Léon Brillouin

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I. Mirebeau

I. Mirebeau

Gif-sur-Yvette/France, Laboratoire Léon Brillouin

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W. van der Lugt Prof. Dr.

Corresponding Author

W. van der Lugt Prof. Dr.

Solid State Physics Laboratory, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen/The Netherlands, Fax: 131 50 3634879

Solid State Physics Laboratory, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen/The Netherlands, Fax: 131 50 3634879Search for more papers by this author

Abstract

en

Neutron diffraction experiments were performed on the liquid alloys NaGa, NaGa3, KGa3 and CsGa3. The structure factors of KGa3 and CsGa3 display prepeaks at small wavenumbers (0.64 and 0.61 Å-1, respectively). This may indicate the existence of extremely large aggregates of atoms in the liquid, which can not be associated with any of the crystal structures known for the solid counterparts of these alloys.

Abstract

de

Neutronenbeugung an flüssigen Alkalimetall—Gallium-Legierungen. Bildung von Riesenclustern?

Es wurden Neutronenbeugungsexperimente an den flüssigen Legierungen NaGa, NaGa3, KGa3 und CsGa3 ausgeführt. Die Strukturfaktoren von KGa3 und CsGa3 weisen bei kleinen Wellenzahlen (0.64 beziehungsweise 0.61 Å-1) „Prepeaks”︁ auf, was möglicherweise ein Hinweis auf die Existenz von grossen Atom-Aggretaten in der Flüssigkeit ist. Die Grösse der Aggregate steht nicht in Übereinstimmung mit den bekannten Kristallstrukturen der entsprechenden festen Verbindungen.

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