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arXiv · 0806.3159

Structural properties, defects and structural phase transition in the ROFeM (R=La, Nd; M=As, P) materials

C. Ma·L. J. Zeng·H. X. Yang·H. L Shi·R. C. Che·C. Y. Liang·Y. B. Qin·G. F. Chen·Z. A. Ren·J. Q. Li
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Abstract

The structural properties of the ROFeM (R=La, Nd; M=As, P) materials have been analyzed by means of electron diffraction, high-resolution transmission-electron microscopy (TEM) and in-situ cooling TEM observations. The experimental results demonstrate that the layered ROFeM crystals often contain a variety of structural defects, such as stacking faults and small-angle boundaries. The in-situ TEM investigations reveal that, in association with the remarkable spin-density-wave (SDW) instability near 150 K, complex structural transitions can be clearly observed in both crystal symmetry and local microstructure features.

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C. Ma, L. J. Zeng, H. X. Yang, H. L Shi, R. C. Che, C. Y. Liang, Y. B. Qin, G. F. Chen, Z. A. Ren, J. Q. Li. 2008-06-19. Structural properties, defects and structural phase transition in the ROFeM (R=La, Nd; M=As, P) materials. https://doi.org/10.1209/0295-5075/84/47002

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