Observation of twin boundary layers in pure and alloyed YBa2Cu3O7−δ
Observation of twin boundary layers in pure and alloyed YBa2Cu3O7−δ
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纯 YBa2Cu3O7−δ 中孪晶边界层的观察
DOI：
10.1063/1.101349
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发表时间：
1989
影响因子：
4
通讯作者：
A. Moodenbaugh
中科院分区：
文献类型：
--
作者：
Y. Zhu;M. Suenaga;Youwen Xu;R. Sabatini;A. Moodenbaugh
利用电子衍射技术测量了纯YBa2(Cu1−xMx)3O7−δ和合金YBa2(Cu1−xMx)3O7−δ（非正交）孪晶界的厚度。边界厚度从M=Ni, x=0.02， δ≂0的~ 0.7 nm到M=Al, x=0.02， δ≂0的~ 2.6 nm不等，而纯YBa2Cu3O7的边界厚度为~ 1.0 nm。类似样品的高分辨率透射电子成像支持这种双边界层的存在。
Using an electron diffraction technique, the thicknesses of the (nonorthorhombic) twin boundary layers were measured for pure and alloyed YBa2(Cu1−xMx)3O7−δ. Boundary thickness varied from ∼0.7 nm for M=Ni, x=0.02, and δ≂0 to ∼2.6 nm for M=Al, x=0.02, and δ≂0, while it was ∼1.0 nm for a pure YBa2Cu3O7. High‐resolution transmission electron imaging of similar specimens supports the existence of such twin boundary layers.