Structural properties and phase transition of RFeMO (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

EPL（2008）

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摘要

The structural properties of RFeMO (R = La, Nd; M= As, P) materials were analyzed by transmission electron microscopy (TEM), revealing that the layered RFeMO crystals often contain a variety of structural defects, such as stacking faults and small-angle boundaries. In situ TEM observations revealed a remarkable spin density wave (SDW) instability near 150 K, and associated complex structural transitions can be clearly observed in both crystalline symmetry and local microstructural features. Copyright (c) EPLA, 2008

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关键词

transmission electron microscopy,microstructures,complex structure,phase transition,spin density wave

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