Phase stable rare earth garnets

US8461535B2 · kind B2 · utility

Assignee

• Lawrence Livermore National Security, LLC · US

Inventors

• Joshua D. Kuntz · Livermore, US
• Nerine Cherepy · Piedmont, US
• Jeffery James Roberts · Livermore, US
• Stephen A. Payne · Castro Valley, US

Key dates

• Filing date: May 11, 2010
• Grant date: Jun 11, 2013
• Expiry date: Jun 6, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/9653
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A transparent ceramic according to one embodiment includes a rare earth garnet comprising AhBiCjO12, where h is 3±10%, i is 2±10%, and j is 3±10%. A includes a rare earth element or a mixture of rare earth elements, B includes at least one of aluminum, gallium and scandium, and C includes at least one of aluminum, gallium and scandium, where A is at a dodecahedral site of the garnet, B is at an octahedral site of the garnet, and C is at a tetrahedral site of the garnet. In one embodiment, the rare earth garment has scintillation properties. A radiation detector in one embodiment includes a transparent ceramic as described above and a photo detector optically coupled to the rare earth garnet.