Crystal structure and physical properties of half-doped manganite nanocrystals of less than 100-nm size

@article{Sarkar2008CrystalSA,
  title={Crystal structure and physical properties of half-doped manganite nanocrystals of less than 100-nm size},
  author={Tapati Sarkar and Barnali Ghosh and A. K. Raychaudhuri and Tapan Chatterji},
  journal={Physical Review B},
  year={2008},
  volume={77}
}
In this paper we report the structural and property (magnetic and electrical transport) measurements of nanocrystals of half-doped La 0.5 Ca 0.5 MnO 3 (LCMO) synthesized by chemical route, having particle size down to an average diameter of 15 nm. It was observed that the size reduction leads to change in crystal structure, and the room temperature structure is arrested so that the structure does not evolve on cooling unlike bulk samples. The structural change mainly affects the orthorhombic… 
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It is proposed that the reported exotic phenomena in the nanosized half-doped manganites should be mainly ascribed to surface disorder effect, and a detailed analysis on the magnetic susceptibilities and the ESR linewidths reveals that for the two compounds the size reduction weakens both the ferromagnetic and antiferromagnetic interactions, and converts the long-range charge orderings to short-range ones.
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Effect of size reduction on the ferromagnetism of the manganite La 1 x Ca x MnO 3 (x = 0.33)
In this paper, we report an investigation of the ferromagnetic state and the nature of ferromagnetic transition of nanoparticles of La0.67Ca0.33MnO3 using magnetic measurements and neutron
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