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

Autor:	Ma, C., Zeng, L. J., Yang, H. X., Shi, H. L, Che, R. C., Liang, C. Y., Qin, Y. B., Chen, G. F., Ren, Z. A., Li, J. Q.
Rok vydání:	2008
Předmět:	Condensed Matter - Superconductivity
Druh dokumentu:	Working Paper
DOI:	10.1209/0295-5075/84/47002
Popis:	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. Comment: 17 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0806.3159 Zobrazit plný text záznamu View this record from Arxiv