Recent Advances in Domain Analysis
Recent Advances in Domain Analysis
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DOI：
10.2320/matertrans.46.743
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发表时间：
2005-04
影响因子：
1.2
通讯作者：
Y. Murakami;D. Shindo
中科院分区：
文献类型：
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作者：
Y. Murakami;D. Shindo
通过选择与位移相变和磁相变相关的某些主题，综述了透射电子显微镜（TEM）的显著进步所取得的磁畴分析的最新进展。能量过滤TEM，它分离的弹性散射从不需要的非弹性的，使我们能够探索马氏体相变的前体状态的复杂现象。特别是在母相中发现了纳米尺度的奇异畴，为研究马氏体在前驱体状态下的晶格畸变和随后的形核过程提供了新的视角。关于磁畴的分析，作者设计了一种基于电子全息术精确评估磁化分布的技术。该方法被应用于在居里温度和/或尼尔温度附近观察到的空穴掺杂锰氧化物的复杂磁性微结构。除了这些主题之外，马氏体和电荷有序锰氧化物之间的晶体学域的相似性，晶体学微结构之间的相关性（例如，反相边界）和磁畴，以及未来关于磁畴分析的挑战性问题也将被提及。
Recent progress in domain analysis, which has been attained by the notable advancement of transmission electron microscopy (TEM), is reviewed by selecting certain topics related to displacive and magnetic phase transformations. Energy-filtered TEM, which separates the elastic scattering from the unwanted inelastic one, enabled us to explore the complex phenomena in the precursor state of martensitic transformations. In particular, the discovery of the peculiar nano-scaled domains in the parent phase has offered a novel picture on the lattice distortion in the precursor state and the subsequent nucleation process of martensite. With respect to the analysis of magnetic domains, the authors have devised a technique that precisely evaluates the magnetization distribution based on electron holography. The method was applied to the complicated magnetic microstructure as observed near the Curie temperature and/or Neel temperature in hole-doped manganites. In addition to these topics, similarities of crystallographic domains between martensites and charge-ordered manganites, correlations between crystallographic microstructures (e.g., antiphase boundaries) and magnetic domains, and future challenging issues regarding domain analysis will also be mentioned.