Effect of Nanoscale Confinement on the β-αPhase Transition in Ag2Se

Details Effect of Nanoscale Confinement on the β-αPhase Transition in Ag2Se Effect of Nanoscale Confinement on the β-αPhase Transition in Ag2Se

2007-11-27

arxiv.org/abs/0711.4198v1

Journal of Applied Physics 102, 12 (2005) 1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2822135

The confinement of silver selenide was investigated using mesoporous silica. Results from x-ray diffraction and electron microscopy show that the confined material still exhibits a \beta to \alpha transition similar to the one that takes place in the bulk crystalline state but with a transition temperature that depends significantly on the confinement conditions. Decreasing the pore size leads to an increase of the transition temperature, opposite to the behavior of the melting point observed in several metallic and organic materials. In the free particles, on the other hand, no size dependence is observed with particle sizes down to 4 nm.

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