On the measurement of dislocation core periods by nanodiffraction

Spence JCH.; Koch C.

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On the measurement of dislocation core periods by nanodiffraction

机译：用纳米衍射测量位错核心周期

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Multiple-scattering calculations are used to demonstrate that the periodicity of dislocation cores may be measured from coherent convergent beam patterns obtained using a subnanometre probe with the electron beam aligned with the dislocation core. The resulting 'half-order' high-order Laue zone ring which results front a double-period core reconstruction is shown to be detectable above the background of thermal diffuse scattering. Multiple-scattering calculations which include thermal scattering are used to show the temperature and thickness dependences of this ring. Activation energies for core processes may be obtained by this method. [References: 33]

机译：多散射计算用于证明位错核心的周期性可以从使用亚纳米探针获得的相干会聚束图样中测量，其中电子束与位错核心对准。结果表明，在热扩散散射的背景之上，可以检测到双周期核心重构的“半阶”高阶劳厄带环。包括热散射在内的多次散射计算用于显示该环的温度和厚度依赖性。核心工艺的活化能可以通过这种方法获得。 [参考：33]

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《Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties》 |2001年第11期|共11页
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Spence JCH.; Koch C.;
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On the measurement of dislocation core periods by nanodiffraction

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