Structure and charge ordering behavior of the colossal magnetoresistive manganite Nd{sub 0.5}Sr{sub 0.5}MnO{sub 3}
- Microscopy and Imaging Center, Texas A and M University, College Station, Texas 77843-2257 (United States)
The structure and charge ordering (CO) behavior of the three-dimensional colossal magnetoresistive manganite Nd{sub 0.5}Sr{sub 0.5}MnO{sub 3} have been studied by transmission electron microscopy. The electron diffraction analysis suggested its room temperature structure as orthorhombic, with a Pnma space group. By controlling the experimental temperature setting either above or below the CO transition temperature, it was observed that the CO grew through the propagation of the CO front. The twin boundaries were the barriers of the CO front movement. In heavily ion irradiated samples, it was observed that the CO front was pinned by the intracrystalline defects, forming a zigzag shape interface. Moreover, the electron beam was observed to influence the CO.
- OSTI ID:
- 21190162
- Journal Information:
- Journal of Applied Physics, Vol. 105, Issue 7; Conference: 53. annual conference on magnetism and magnetic materials, Austin, TX (United States), 10-14 Nov 2008; Other Information: DOI: 10.1063/1.3072472; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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