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首页> 外文期刊>Physica, C. Superconductivity and its applications >Crystal growth patterns in MgO seeded Y1.8Ba2.4Cu3.4Oy/Ag melt-texturing process
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Crystal growth patterns in MgO seeded Y1.8Ba2.4Cu3.4Oy/Ag melt-texturing process

机译:MgO晶种Y1.8Ba2.4Cu3.4Oy / Ag熔融织构过程中的晶体生长模式

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Present work shows that the MgO seeded Y1.8Ba2.4Cu3.4Oy/Ag crystal patterns grown by the isothermal solidification usually have two basic types of growth facets. One is high-angle rotation about the (100) plane of MgO single crystal, while the other is parallel to the plane. The preferred growth with 45 degrees rotation is enhanced to be only one type as the undercooling decreases. The domain structure is checked by transmission electron microscopy and selected area electron diffraction. Lattice matching relationship between MgO and Y123 in the melt-texturing process agrees with what is seen in various vapor phase epitaxial growths as well as the predictions of simplified near coincidence site lattice theory. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 9]
机译:目前的工作表明,通过等温凝固生长的MgO晶种Y1.8Ba2.4Cu3.4Oy / Ag晶体图案通常具有两种基本的生长面类型。一种是绕MgO单晶的(100)平面大角度旋转,而另一种是平行于该平面。随着过冷度的降低,旋转45度时的首选生长增强为仅一种类型。通过透射电子显微镜和选择区域电子衍射检查畴结构。 MgO和Y123在熔体织构过程中的晶格匹配关系与各种气相外延生长以及简化的近似重合位点晶格理论的预测一致。 (C)2001 Elsevier Science B.V.保留所有权利。 [参考:9]

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