Mechanical self-confinement to enhance energy storage density of antiferroelectric capacitorsJournal of Applied Physics
AbstractThe energy storage density of electrical capacitors utilizing antiferroelectric compositions Pb0.99Nb0.02[(Zr0.57Sn0.43)1−yTiy]0.98O3 as dielectrics is measured at a series of temperatures in a series of dielectric compositions with and without self-confinement. Under the applied electric field of 70 kV/cm, a maximum energy density of 1.3 J/cm3 is achieved. The mechanical self-confinement was introduced by partially electroding the central portion of thedielectric ceramic disk. A phase-field model was developed and it confirms the presence of compressive stresses ∼30 MPa in the electroded portion of the dielectric disk and the contribution to the increased energy density from the mechanical confinement.
Copyright OwnerAmerican Institute of Physics
Citation InformationS. E. Young, J. Y. Zhang, W. Hong and Xiaoli Tan. "Mechanical self-confinement to enhance energy storage density of antiferroelectric capacitors" Journal of Applied Physics Vol. 113 (2013) p. 054101
Available at: http://works.bepress.com/xiaoli_tan/4/