High dielectric constant material

US9227876B2 · kind B2 · utility

Assignee

• The Australian National University · AU

Inventors

• Wanbiao Hu · Canberra, AU
• Melanie Kitchin · Melbourne, AU
• Yun Liu · Zhuolan Township, TW
• Amanda Snashall · Belconnen, AU
• Raymond L. Withers · Tuggeranong, AU
• Lasse Noren · Campbell, AU

Key dates

• Filing date: Sep 14, 2012
• Grant date: Jan 5, 2016
• Expiry date: Sep 14, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/6562
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed herein is a material having formula (A3+((4-5n)/3)-δB5+n)xTi1−xO2, wherein 0<n<0.8, δ and x is such that the material has a rutile structure, 0<n<0.8, δ is between 0 and 0.025 inclusive, A3+ is a trivalent positive ion and B5− is a pentavalent positive ion. A process for making the material, and its use as a dielectric material, are also described.