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X-ray and neutron diffraction studies and MD simulation of atomic configurations in polyamorphic Y2O3-Al2O3 systems.

Abstract:

Supercooled liquids in the Y(2)O(3)-Al(2)O(3) system undergo a liquid-liquid phase transition between a high-temperature, high-density amorphous (HDA) polymorph form and one with lower density (LDA form) that is stable at lower temperature. The two amorphous polymorphs have the same chemical composition, but they differ in their density (ca. 4% difference) and in their heat content (enthalpy) and entropy determined by calorimetry. Here we present new results of structural studies using neutro...

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Publication status:
Published

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Publisher copy:
10.1098/rsta.2004.1510

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author
Journal:
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
Volume:
363
Issue:
1827
Pages:
589-607
Publication date:
2005-02-01
DOI:
EISSN:
1471-2962
ISSN:
1364-503X
Source identifiers:
60113
Language:
English
Keywords:
Pubs id:
pubs:60113
UUID:
uuid:3671d8d3-b12a-4feb-8f44-2a336cb6ae70
Local pid:
pubs:60113
Deposit date:
2012-12-19

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