Method and apparatus for producing perovskite compositions
AssigneeThe Boeing Company
InventorDarryl F. Garrigus
Life of this patent
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Abstract
A method for producing a perovskite composition from a precursor composition wherein the precursor composition is irradiated with microwaves to heat the precursor composition and convert the precursor composition to perovskite. A susceptor crucible for use in processing a perovskite precursor composition. The susceptor crucible has an inner crucible, an outer crucible surrounding said inner crucible, and a susceptor material positioned between and separating the inner and outer crucibles.
Claims17
A method for producing a perovskite composition from a precursor composition comprising placing perovskite seed material in contact with the precursor composition and irradiating the seed material and the precursor composition with microwaves to heat the seed material and the precursor composition and convert said precursor composition to perovskite.
A method for producing a perovskite composition from a precursor composition comprising:
- placing the precursor composition in a susceptor crucible comprising an inner crucible, an outer crucible surrounding said inner crucible, and susceptor material positioned between and separating said inner and outer crucibles;
- irradiating said precursor composition with microwaves so that the susceptor material absorbs microwaves to transfer heat to the precursor composition and at least partially convert at least a portion of the precursor composition to perovskite.
A susceptor crucible for use in processing a perovskite precursor composition comprising:
- an inner crucible;
- an outer crucible surrounding said inner crucible;
- and
- a susceptor material positioned between and separating said inner and outer crucibles.
A method for producing a perovskite composition from a precursor composition comprising irradiating the precursor composition with microwaves to heat the precursor composition and convert said precursor composition to perovskite, said precursor composition being a precursor composition for a perovskite composition selected from the group consisting of LaCrO.sub.3, LaMnO.sub.3, LaNiO.sub.3, LaCoO.sub.3, SrMnO.sub.3, LaFeO.sub.3, La.sub.1-x Sr.sub.x MnO.sub.3, La.sub.1-x Sr.sub.x CrO.sub.3, Y.sub.1-x Ca.sub.x CrO.sub.3, LaCr.sub.1-x Mg.sub.x O.sub.3, La.sub.1-x Ca.sub.x CrO.sub.3, CaTiO.sub.3, SrTiO.sub.3, Sr.sub.1-x La.sub.x TiO.sub.3, and La.sub.x Sr.sub.1-x Cr.sub.y Mn.sub.1-y O.sub.3 wherein x and y are between 0 and 1.
A method for producing a perovskite composition from a precursor composition comprising placing perovskite seed material in contact with the precursor composition and irradiating the seed material and the precursor composition with microwaves to heat the seed material and the precursor composition and convert said precursor composition to perovskite, said perovskite seed material having the same composition as the perovskite composition produced from the precursor composition, said perovskite composition being selected from the group consisting of LaCrO.sub.3, LaMnO.sub.3, LaNiO.sub.3, LaCoO.sub.3, SrMnO.sub.3, LaFeO.sub.3, La.sub.1-x Sr.sub.x MnO.sub.3, La.sub.1-x Sr.sub.x CrO.sub.3, Y.sub.1-x Ca.sub.x CrO.sub.3, LaCr.sub.1-x Mg.sub.x O.sub.3, La.sub.1-x Ca.sub.x CrO.sub.3, CaTiO.sub.3, SrTiO.sub.3, Sr.sub.1-x La.sub.x TiO.sub.3, and La.sub.x Sr.sub.1-x Cr.sub.y Mn.sub.1-y O.sub.3 wherein x and y are between 0 and 1.
Dependencies are inferred from the claim text.