The maximum values of the magnetoelectric coupling coefficient were obtained for the compositions within the region of structural transformations.
Results indicate that impulse coupling coefficient has a maximum value with dimensionless factor of about 0.4; impulse coupling coefficient is independent of incident laser energy when dimensionless factor is constant.
The maximum active power of the load depends on the coupling coefficient between resonators, quality factor of the resonator and the drive power.
When the electrical parameters are fixed, the maximum active power the load can get depends on the coupling coefficient between resonators, quality factor of the resonator and the drive power.
In the three-phase coexistence region, the ceramics displayed effectively enhanced piezoelectric activity, with the maximum values of the piezoelectric constant d33, and planar electromechanical coupling coefficient, being 268 pC/N and 0.432 respectively.
Next, the transmission power and efficiency as a function of coupling coefficient and quality factor are derived, and the maximum active power of the load depends on the coupling coefficient between resonators, quality factor of the resonator and the drive power.
In this case, the mode volume of the nanocavity mode expands, and the electric field maximum at the nanocavity center decreases, which results in the decrease of the coupling coefficient g between a quantum dot and the nanocavity mode.
Note that, with the estimation of coupling coefficient, the estimation performance for elevation angle can be further improved by statistically optimal algorithms such as maximum likelihood algorithm and subspace fitting algorithm.
In order to uphold the maximum power transfer in a resonant inductively coupled wireless power transfer system, an operating region has been proposed based on the coupling coefficient, frequency and electric load.
Under conditions of harmonic forcing, the effective modal loss factor depends on: (1) the electromechanical coupling coefficient of the piezoelectric system; and (2) the ratio of the rectifier output voltage during operation to its maximum open-circuit value.
