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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Neutron diffraction study of the size-induced tetragonal to monoclinic phase transition in zirconia nanocrystals.

Accurate neutron powder diffraction experiments at several temperatures allow one to monitor the reconstructive tetragonal to monoclinic phase transition as a function of the size of zirconia nanoparticles. The structure of the tetragonal phase observed in the nanocrystals is identical to that observed in micrometric zirconia above 1400 K. A uniaxial strain depending on grain size is observed. The phase transition occurs above a threshold crystal size. These results are analyzed within the Landau theory and can be understood as a mechanism of size-dependent phase transition where the primary order parameter is altered by the nanoparticle size.[1]

References

  1. Neutron diffraction study of the size-induced tetragonal to monoclinic phase transition in zirconia nanocrystals. Baldinozzi, G., Simeone, D., Gosset, D., Dutheil, M. Phys. Rev. Lett. (2003) [Pubmed]
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