Accession Number : ADA310350

Title :   Evaluation of Ferroelectric Materials for Power Plane Decoupling Capacitors at Frequencies Above 1 GHz.

Descriptive Note : Final rept. 1 Aug93-31 Jul 95,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB

Personal Author(s) : Cross, L. E.

PDF Url : ADA310350

Report Date : 31 JUL 1995

Pagination or Media Count : 61

Abstract : This report describes work carried out in the Materials Research Laboratory of the Pennsylvania State University over the period August 1, 1993 to July 31, 1993, to evaluate ferroelectric materials in thin film form for power plane decoupling capacitors at very high frequencies. These studies have focused upon compositions in the lead zirconate titanate (PZT), lead lanthanum zirconate titanate (PLZT), lead magnesium niobate:lead titanate (PMN:PT) and lead stannate zirconate titanate (PSnZT). The compositions were carefully chosen to represent ferroelectric, relaxor ferroelectric and antiferroelectric to ferroelectric switching systems which could exhibit ultra high permittivity under the high bias field of the thin film configuration. Results show that the PbZr0.52Ti0.48O3 has excellent properties to beyond 20 Ghz. At the switching field PSnZT compositions were demonstrated which have effective capacitance densities of order 1 farad/cm3, and permit exploitation of the high spontaneous polarization (4O microc/cm-sq) in this system for energy storage purposes.

Descriptors :   *FERROELECTRIC MATERIALS, *CAPACITORS, POLARIZATION, THIN FILMS, DIELECTRIC PROPERTIES, CONFIGURATIONS, LEAD TITANATES, DECOUPLING, LEAD COMPOUNDS, MAGNESIUM COMPOUNDS, TIN COMPOUNDS, BIAS, ENERGY STORAGE, ZIRCONATES, CAPACITANCE, LANTHANUM COMPOUNDS, NIOBATES, SUPERHIGH FREQUENCY, FERROELECTRICITY, ELECTRONIC SWITCHING.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE