PLZT film capacitors for power electronics and energy storage applications

Antiferroelectric to Ferroelectric Crossover and Energy Storage Properties of (Pb1−xLax)(Zr0.90Ti0.10)1−x/4O3 (0.02 ≤ x ≤ 0.04) Ceramics

“…The highest energy W re of 6.4 J/cm 3 to date has been demonstrated on PLZST‐based AFE ceramics at a high field of 400 kV/cm and with an efficiency of 67% . Higher values have been achieved in thin film forms, but the thickness limitation has not always met the practical requirements …”

“…In recent years, the demand for AFE materials with the electric field‐induced AFE‐to‐FE phase switching has been on the rise. These materials became very promising to realize electronic materials like highly efficient energy storage materials, pulsed power circuits and generators, displacement transducers, microactuators, pyroelectric security sensors, cooling devices, etc . Since the high recoverable energy density of AFE materials is due to the reversible electric field‐induced AFE‐to‐FE phase main characteristic, it is necessary to produce materials with the AFE/FE phase boundary at room temperature.…”

“…Researchers made some efforts to tailor the composition around MPB to achieve a low AFE to FE switching field ( E F ). By lowering the free energy difference in favor of FE phase by adequate substitutional changes (e.g., with Ba, Sn, Ti, La), the critical field necessary to induce the AFE to FE phase transition is also lowered, thus opening the way to many different applications. Despite earlier discovery of the AFE/FE phase boundary in Pb 1− x La x (Zr 0.9 Ti 0.1 ) 1− x /4 O 3 (PLZT x /90/10), the energy storage properties across the border have not been adequately addressed .…”

Room temperature impact consolidation and application to ceramic coatings: aerosol deposition method

“…(Balu) Balachandran et al at Argonne National Laboratory have produced dense ceramic films of lanthanum-doped lead zirconate titanate (PLZT) on various substrates by room temperature AD. 84) AD-PLZT film capacitors exhibit excellent volume and specific gravity capacities when compared to currently used polymer film capacitors. The measured properties indicated that PLZT-based ceramic film capacitors meet the requirements of modern high temperature capacitors.…”

Enhanced energy density with a wide thermal stability in epitaxial Pb0.92La0.08Zr0.52Ti0.48O3 thin films

“…7,[10][11][12] Among them, the PbZrO 3 -based ferroelectric films, such as (Pb, La)(Zr, Ti)O 3 , (Pb, La)(Zr, Sn, Ti)O 3 , and (Pb, Nb)(Zr, Sn, Ti)O 3 , exhibit high energy density (10-85 J/cm 3 ) at room temperature, and have been considered the most promising candidates for applications in high-power energy storage. [13][14][15][16][17][18][19][20][21][22] However, the high energy density ($85 J/cm 3 ) only can be achieved at room temperature due to lower breakdown voltage at higher temperature, 22 and by far, the vast majority of investigations on PbZrO 3 -based ferroelectric thin films are focused on the energy storage properties at room temperature. In practical applications, the device operation temperature may fluctuate within a certain range.…”