ANSTO Publications Online >
Journal Publications >
Journal Articles >

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/6260

Title: Negative thermal expansion in LnCo(CN)6 (Ln=La, Pr, Sm, Ho, Lu, Y): mechanisms and compositional trends
Authors: Duyker, SG
Peterson, VK
Kearley, GJ
Ramirez-Cuesta, AJ
Kepert, CJ
Keywords: CYANIDES
THERMAL EXPANSION
X-RAY DIFFRACTION
METALS
MATERIALS
TEMPERATURE DEPENDENCE
Issue Date: 9-Apr-2013
Publisher: John Wiley and Sons
Citation: Duyker, S. G., Peterson, V. K., Kearley, G. J., Ramirez-Cuesta, A. J., & Kepert, C. J. (2013). Negative Thermal Expansion in LnCo(CN)6 (Ln=La, Pr, Sm, Ho, Lu, Y): Mechanisms and Compositional Trends. Angewandte Chemie International Edition, 52(20), 5266-5270.
Abstract: Negative thermal expansion (NTE) is a comparatively rare phenomenon that is found in a growing number of materials.1 The discovery of new NTE materials and the elucidation of mechanisms underpinning their behavior is important both in extending the field and enabling tailored thermal expansion properties. NTE has been found throughout a broad family of cyanide coordination frameworks,2 arising from thermal population of low-energy transverse vibrations of the cyanide bridges, which reduce the average metal–metal distances, and thus the lattice parameters, with increasing temperature. More complex mechanisms have been established in metal–organic framework materials, in which both local and long-range modes contribute to NTE.3 The low-energy dynamics of metal-based materials are often modeled in terms of rigid unit modes (RUMs), wherein the metal-centered polyhedra are treated as rigid, with only the linkage being flexible. © 2013, Wiley-Vch Verlag GmbH & Co.
URI: http://dx.doi.org/10.1002/anie.201300619
http://apo.ansto.gov.au/dspace/handle/10238/6260
ISSN: 1433-7851
Appears in Collections:Journal Articles

Files in This Item:

There are no files associated with this item.

Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback