Imperial College London


Faculty of EngineeringDepartment of Materials

Professor of Theory and Simulation of Materials



+44 (0)20 7594 8154a.mostofi Website




Bessemer B332Royal School of MinesSouth Kensington Campus






BibTex format

author = {Senn, MS and Murray, C and Luo, X and Wang, L and Huang, F-T and Cheong, S-W and Bombardi, A and Ablitt, C and Mostofi, A and Bristowe, N},
doi = {10.1021/jacs.5b13192},
journal = {Journal of the American Chemical Society},
pages = {5479--5482},
title = {Symmetry Switching of Negative Thermal Expansion by Chemical Control},
url = {},
volume = {138},
year = {2016}

RIS format (EndNote, RefMan)

AB - The layered perovskite Ca3-xSrxMn2O7 is shown to exhibit a switching from a material exhibiting uniaxial negative to positive thermal expansion as a function of x. The switching is shown to be related to two closely competing phases with different symmetries. The negative thermal expansion (NTE) effect is maximised when the solid solution is tuned closest to this region of phase space but is switched off suddenly on passing though the transition. Our results show for the first time that, by understanding the symmetry of the competing phases alone, one may achieve unprecedented chemical control of this unusual property.
AU - Senn,MS
AU - Murray,C
AU - Luo,X
AU - Wang,L
AU - Huang,F-T
AU - Cheong,S-W
AU - Bombardi,A
AU - Ablitt,C
AU - Mostofi,A
AU - Bristowe,N
DO - 10.1021/jacs.5b13192
EP - 5482
PY - 2016///
SN - 1520-5126
SP - 5479
TI - Symmetry Switching of Negative Thermal Expansion by Chemical Control
T2 - Journal of the American Chemical Society
UR -
UR -
VL - 138
ER -