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Author (up) Curiale, J.; Sánchez, R.D.; Troiani, H.E.; Pastoriza, H.; Levy, P.; Leyva, A.G. openurl 
  Title Morphological and magnetic characterization of manganites oxide based nanowires and nanotubes Type Journal Article
  Year 2004 Publication Physica B Abbreviated Journal  
  Volume 354 Issue 1-4 Pages 98-103  
  Abstract A morphological and magnetic study of sub-micrometric nanostructures of a manganese oxide-based compound La0.325Pr0.300Ca0.375MnO3 is presented. Nanowires of 50 and 100 nm and tubes with external diameters of 200 and 800 nm were synthesized. Scanning electron microscopy with EDS microanalysis (SEM) and transmission electron microscopy (TEM) allowed to characterize the morphology and microstructure of these nanostructures. The walls of the nanotubes are composed of on average 40 nm grain size particles, while in nanowires the grains are much smaller, in the range between 4 and 20 nm. In both situations, the small grains present a random crystalline orientation, as it is confirmed by TEM diffraction experiments. Magnetization measurements and hysteresis loops are presented and discussed based on magnetic interaction between the grains, anisotropy considerations and reversal magnetization mechanisms.  
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  Notes Approved no  
  Call Number BT @ hernan @ curiale04 Serial 10  
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