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固溶体中的溶质原子和磁性材料中的原子磁矩,有时会出现统计非均匀的、但又不形成明显相界或畴壁的分布,这种现象称为调幅结构。例如,固溶体中的溶质原子形成与基体保持完全共格关系的富集区或贫乏区、反相畴、Spinodal分解前期产生的浓度连续起伏、变磁和螺磁构造等。调幅结构对固体的力学和物理性能有着显著影响,因而人们日益重视对它的研究。衍射技术是分析调幅结构的一种主要方法。关于衍射技术的理论(采用运动学近似)已有较多的研究报告,可参看综述性文献[1,2]。这些报告都是通过Fourier展开讨论原
The solute atoms in the solid solution and the magnetic moment in the magnetic material sometimes appear statistically non-uniform, but do not form a clear phase boundary or domain wall distribution, this phenomenon is called the amplitude modulation structure. For example, solute atoms in a solid solution form enriched or depleted regions that are completely in a coherent relationship with the matrix, antiphase domains, continuous undulations at the pre-Spinodal decomposition level, magnetotactic and spiro-magnetic structures, and the like. The amplitude modulation structure has a significant impact on the mechanical and physical properties of solids, so people pay more attention to its research. Diffraction is a major method of analyzing amplitude modulation. There has been a lot of research on the theory of diffraction (using a kinematic approximation). See the review [1, 2]. These reports were originally discussed through Fourier