Imperial College London


Central FacultyOffice of the Provost

Associate Provost (Academic Planning)



+44 (0)20 7594 6724n.alford




Miss Catherine Graham +44 (0)20 7594 3330




2..05 (in RSM) or 3.09 (in the Faculty Building)Royal School of MinesSouth Kensington Campus






BibTex format

author = {Le, Goupil F and McKinnon, R and Koval, V and Viola, G and Dunn, S and Berenov, A and Yan, H and Alford, NM},
doi = {10.1038/srep28251},
journal = {Scientific Reports},
title = {Tuning the electrocaloric enhancement near the morphotropic phase boundary in lead-free ceramics},
url = {},
volume = {6},
year = {2016}

RIS format (EndNote, RefMan)

AB - The need for more energy-efficient and environmentally-friendly alternatives in the refrigeration industry to meet Global emission targets has driven efforts towards materials with a potential for solid state cooling. Adiabatic depolarisation cooling, based on the electrocaloric effect (ECE), is a significant contender for efficient new solid state refrigeration techniques. Some of the highest ECE performances reported are found in compounds close to the morphotropic phase boundary (MPB). This relationship between performance and the MPB makes the ability to tune the position of the MPB an important challenge in electrocaloric research. Here, we report direct ECE measurements performed on MPB tuned NBT-06BT bulk ceramics with a combination of A-site substitutions. We successfully shift the MPB of these lead-free ceramics closer to room temperature, as required for solid state refrigeration, without loss of the criticality of the system and the associated ECE enhancement.
AU - Le,Goupil F
AU - McKinnon,R
AU - Koval,V
AU - Viola,G
AU - Dunn,S
AU - Berenov,A
AU - Yan,H
AU - Alford,NM
DO - 10.1038/srep28251
PY - 2016///
SN - 2045-2322
TI - Tuning the electrocaloric enhancement near the morphotropic phase boundary in lead-free ceramics
T2 - Scientific Reports
UR -
UR -
VL - 6
ER -