Percolative phase separation underlies colossal magnetoresistance in mixed-valent manganites

@article{Uehara1999PercolativePS,
  title={Percolative phase separation underlies colossal magnetoresistance in mixed-valent manganites},
  author={M. Uehara and Shigeo Mori and Christine H-T Chen and S. -W. Cheong},
  journal={Nature},
  year={1999},
  volume={399},
  pages={560-563}
}
Colossal magnetoresistance—an unusually large change of resistivity observed in certain materials following application of magnetic field—has been extensively researched in ferromagnetic perovskite manganites. But it remains unclear why the magnetoresistive response increases dramatically when the Curie temperature (T C) is reduced. In these materials, T C varies sensitively with changing chemical pressure; this can be achieved by introducing trivalent rare-earth ions of differing size into the… CONTINUE READING
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