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Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals
Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals
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机译:通过单晶稀土钡铜氧化物单晶的籽晶生产的大型单畴123材料
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摘要
A method of fabricating bulk YBa.sub.2 Cu.sub.3 O.sub.x where compressed powder oxides and/or carbonates of Y and Ba and Cu present in mole ratios to form YBa.sub.2 Cu.sub.3 O.sub.x are heated in the presence of a Nd.sub.1+x Ba.sub.2-x Cu.sub.3 O.sub.y seed crystal to a temperature sufficient to form a liquid phase in the YBa.sub.2 Cu.sub.3 O.sub.x while maintaining the seed crystal solid. The materials are slowly cooled to provide a YBa.sub.2 Cu.sub.3 O.sub.x material having a predetermined number of domains between 1 and 5. Crack-free single domain materials can be formed using either plate shaped seed crystals or cube shaped seed crystals with a pedestal of preferential orientation material.
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机译:一种制造大块YBa.sub.2 Cu.sub.3 Ox的方法,其中Y和Ba和Cu的压缩粉末氧化物和/或碳酸盐以摩尔比存在以形成YBa.sub.2 Cu.sub.3将Ox在Ndsub + 1 x Ba2-sub Cu x 3 Cu 3 Oy籽晶存在下加热到足以在YBa中形成液相的温度2 Cu 3 O x,同时保持晶种固体。将材料缓慢冷却以提供具有在1和5之间的预定数量的畴的YBa.sub.2 Cu.sub.3 Ox材料。可以使用任何一种板状晶种形成无裂纹的单畴材料。或具有优先取向材料基座的立方体晶种。
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