Ferroelectric detector array utilizing material and fabrication technique

US5409548A · kind A · utility

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventor

• Robert C. Hoffman · Paddy Lane, US

Key dates

• Filing date: Apr 28, 1994
• Grant date: Apr 25, 1995
• Expiry date: Apr 28, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N15/15

Abstract

A ferroelectric material, its fabrication technique, and use as a detector aterial, in a ferroelectric detector array is disclosed. The material is an alloy of essential pure components of Pb.sub.2 (Fe, Nb)O.sub.2 and Pb.sub.2 (Fe, Ta)O.sub.2 each with respective Curie temperatures. An essentially linear relationship is made for mole fraction compositions versus Curie temperatures of each component in the alloy, between the pure mole fractions and respective Curie temperatures of the pure components. A Curie temperature for the composition of Pb.sub.2 (Fe, [Ta.sub.(1-x), Nb.sub.x ])O.sub.6 is determined, where x is the mole fraction of Pb.sub.2 (Fe,Nb)O.sub.2 and 1-x is the mole fraction of Pb.sub.2 (Fe, Ta)O.sub.2, with x having a value greater than zero and less than one.