National Physical Laboratory

Functional Materials Functional Materials

Current and historical publications from the Functional Materials area.

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2014

Correia. T, Smith. N.A.S, Rokosz. M.K., Experimentally validated finite element model of electrocaloric multilayer ceramic structures, Journal of Applied Physics, 116, 044511, 2014

Jalali, N.; Woolliams, P.; Stewart, M.; Weaver, P. M.; Cain, M. G.; Dunn, S.and Briscoe, J., Improved performance of p--n junction-based ZnO nanogenerators through CuSCN-passivation of ZnO nanorods, Journal of Materials Chemistry A, Royal Society of Chemistry, 2014

C Vecchini, A Bombardi, L C Chapon, N Lee, P G Radaelli and S-W Cheong, Magnetic phase diagram and ordered ground state of GdMn2O5 multiferroic studied by x-ray magnetic scattering, Journal of Physics: Conference Series, 519, 012004, 2014

C. Vecchini, A. Bombardi, L. C. Chapon, G. Beutier, P. G. Radaelli, S. Park, and S.-W. Cheong, Magnetically induced femtoscale strain modulations in HoMn2O5, Physical Review B, 89, 125114, 2014

J. Wooldridge, M. Stewart, C. Vecchini, M. G. Cain, M. Gutmann, M. Reece, Temperature and Frequency Dependence of Electric Field-Induced Phase Transitions in PMN-0.32PT, Journal of American Ceramic Society, 1-5, 2014

Bowen, C.; Kim, H.; Weaver, P. and Dunn, S., Piezoelectric and ferroelectric materials and structures for energy harvesting applications, Energy and Environmental Science, 7, 25-44, 2014

Moniz, S.; Quesada Cabrera, R.; Blackman, C. S.; Tang, J.; Southern, P.; Weaver, P. and Carmalt, C. J., A simple, low-cost CVD route to thin films of BiFeO3 for efficient water photo-oxidation, J. Mater. Chem. A - The Royal Society of Chemistry, 2, 2922-2927, 2014

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2013

S. Ryding, R. Cernik, J. Wooldridge, T. L. Burnett, M. Stewart, C. Vecchini, M. G. Cain, A. Lennie, F. Yuan, C. Tang, P. Thompson, Simultaneous measurement of X-ray powder diffraction and ferroelectric polarisation data as a function of applied electric field at a range of frequencies, Journal of Powder Diffraction, 28, S2 (2013)

A.V. Kimmel, J. Íñiguez, M.G. Cain, P.V. Sushko J., Neutral and charged oxygen vacancies induce two-dimensional electron gas (2DEG) near SiO2/BaTiO3 interfaces, Phys. Chem. Lett., 4, 333 (2013)

Briscoe, J.; Jalali, N.; Woolliams, P.; Stewart, M.; Weaver, P. M.; Cain, M. and Dunn, S., Measurement techniques for piezoelectric nanogenerators, Energy & Environmental Science, 2013, 6, 3035-3045

Correia, T. M.; McMillen, M.; Rokosz, M. K.; Weaver, P. M.; Gregg, J. M.; Viola, G. and Cain, M. G., A Lead-Free and High-Energy Density Ceramic for Energy Storage Applications, Journal of the American Ceramic Society, 2013, 96, 2699-2702

Wooldridge, J.; Muniz-Piniella, A.; Stewart, M.; Shean, T. A. V.; Weaver, P. M. and Cain, M. G., Vertical comb drive actuator for the measurement of piezoelectric coefficients in small-scale systems, Journal of Micromechanics and Microengineering, 2013, 23, 035028

Woolliams, P. D.; Weaver, P. M.; Correia, T. M.; Cain, M. G.; Pickwell, A. and Dorey, R. A., Lead Zirconate Titanate coating of Tungsten Carbide-Cobalt to enable smart coatings, Sensors and Actuators A: Physical, 2013, 194, 47-51

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2012

McMillen, M.; Douglas, A.; Correia, T.; Weaver, P.; Cain, M. and Gregg, J., Increasing recoverable energy storage in electroceramic capacitors using 'dead-layer' engineering, Applied Physics Letters, 2012, 101, 242909-242909

Kimmel, A. V.; Weaver, P. M.; Cain, M. G. and Sushko, P. V., Defect-Mediated Lattice Relaxation and Domain Stability in Ferroelectric Oxides, Phys. Rev. Lett., 2012, 109, 117601

Viola, G.; Ning, H.; Reece, M.; Wilson, R.; Correia, T.; Weaver, P.; Cain, M. and ; Yan, H., Reversibility in electric field-induced transitions and energy storage properties of bismuth-based perovskite ceramics, Journal of Physics D: Applied Physics, IOP Publishing, 2012, 45, 355302

Zheng, D. Swingler, J.; Weaver, P.M and Liu, Q., Electrical Degradation Induced Formations of Current Transients in Lead Zirconate Titanate, Advanced Materials Research, 2012, 549, 707-710

Zheng, D.; Swingler, J. and Weaver, P.M., The Influence of Electrode Materials on the Electrical Degradation Process of Lead Zirconate Titanate under Harsh Operating Environment, Advanced Materials Research, 2012, 535, 1507-1511

Briscoe, J.; Stewart, M.; Vopson, M.; Cain, M.; Weaver, P. M. and Dunn, S., Nanostructured p-n Junctions for Kinetic-to-Electrical Energy Conversion, Advanced Energy Materials, 2012, 2, 1261-1268

Weaver, P. M.; Cain, M. G.; Stewart, M.; Anson, A.; Franks, J.; Lipscomb, I. P.; McBride, J. W.; Zheng, D. and Swingler, J., The effects of porosity, electrode and barrier materials on the conductivity of piezoelectric ceramics in high humidity and dc electric field, Smart Materials and Structures, 2012, 21, 045012

Stewart, M.; Weaver, P. M. and Cain, M., Charge redistribution in piezoelectric energy harvesters, Applied Physics Letters, AIP, 2012, 100, 073901

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2011

Paul M. Weaver, Markys G. Cain, Tatiana M. Correia, Mark Stewart, Electromechanical Coupling and Temperature Dependent Polarisation Reversal in Piezoelectric Ceramics, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 58, 1730-1736 (2011)

Vopsaroiu, M.; Weaver, P.; Cain, M.; Reece, M. and Chong, K., Polarization dynamics and non-equilibrium switching processes in ferroelectrics, Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on, 2011, 58, 1867-1873

Weaver P.M., A Sensorless Drive System for Controlling Temperature Dependent Hysteresis in Piezoelectric Actuators, Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 58, 704-710, April 2011

Zheng, D.; Swingler, J. and Weaver, P. M., Electrical conduction mechanisms in piezoelectric ceramics under harsh operating conditions, Sensors and Actuators A: Physical, 2011, 167, 19-24

Vopsaroiu, M.; Cain, M. G.; Woolliams, P. D.; Weaver, P. M.; Stewart, M.; Wright, C. D. and Tran, Y., Voltage control of the magnetic coercive field: Multiferroic coupling or artifact?, Journal of Applied Physics, AIP, 2011, 109, 066101

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2010

Burnett, T. L.; Weaver, P. M.; Blackburn, J. F.; Stewart, M. and Cain, M. G., Correlation of electron backscatter diffraction and piezoresponse force microscopy for the nanoscale characterization of ferroelectric domains in polycrystalline lead zirconate titanate, Journal of Applied Physics, AIP, 2010, 108, 042001

Vopsaroiu, M.; Blackburn, J.; Cain, M. G. and Weaver, P. M., Thermally activated switching kinetics in second-order phase transition ferroelectrics, Phys. Rev. B, American Physical Society, 2010, 82, 024109

Wooldridge, J.; Blackburn, J. F.; McCartney, N. L.; Stewart, M.; Weaver, P. and Cain, M. G., Small-scale piezoelectric devices: Pyroelectric contributions to the piezoelectric response, Journal of Applied Physics, AIP, 2010, 107, 104118

Weaver, P. M.; Cain, M. G. and Stewart, M., Temperature dependence of strain-polarization coupling in ferroelectric ceramics, Applied Physics Letters, AIP, 2010, 96, 142905

Weaver, P. M.; Cain, M. G. and Stewart, M. Temperature dependence of high field electromechanical coupling in ferroelectric ceramics, Journal of Physics D: Applied Physics, 2010, 43, 165404

Zheng, D.; Swingler, J. and Weaver, P., Current leakage and transients in ferroelectric ceramics under high humidity conditions, Sensors and Actuators A: Physical, 2010, 158, 106-111

Jenny Wooldridge, John Blackburn, Michael de Podesta, Mark Stewart, Paul Weaver and Markys Cain, Pyroelectric Contributions to the Piezoelectric Hydrostatic Berlincourt Method, Advances in Applied Ceramics, 2010, 109, 143-146

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2009

Lipscomb I.P, Weaver P.M., Swingler J., McBride J.W., The Effect of Relative Humidity, Temperature and Electrical Field on Leakage Currents in Piezo-ceramic Actuators Under DC Bias, Sensors and Actuators A: Physical, 2009, 151, 179-186

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2008

Lipscomb I.P, Weaver P.M., Swingler J., McBride J.W., Micro-Computer Tomography - an aid in the investigation of structural changes in lead zirconate titanate ceramics after temperature-humidity bias testing, Journal of Electroceramics, August 2008 (DOI 10.1007/s10832-008-9537-8)

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