Low value for the static background dielectric constant in epitaxial PZT thin films.

ABSTRACT: Ferroelectrics are intensively studied materials due to their unique properties with high potential for applications. Despite all efforts devoted to obtain the values of ferroelectric material constants, the problem of the magnitude of static dielectric constant remains unsolved. In this article it is shown that the value of the static dielectric constant at zero electric field and with negligible contribution from the ferroelectric polarization (also called static background dielectric constant, or just background dielectric constant) can be very low (between 10 and 15), possibly converging towards the value in the optical domain. It is also found that the natural state of an ideal, mono-domain, epitaxial ferroelectric is that of full depletion with constant capacitance at voltages outsid

SUBMITTER: Boni GA 

PROVIDER: S-EPMC6789001 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature