Negative thermal expansion in ZnF$_2$

Details Negative thermal expansion in ZnF$_2$ Negative thermal expansion in ZnF$_2$

2011-04-18

arxiv.org/abs/1104.3529v1

Appl. Phys. Lett. 98, 181911 (2011)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.3588414

We have investigated temperature dependence of the lattice parameters and the unit cell volume of ZnF$_2$ by neutron diffraction and have discovered negative thermal expansion (NTE) at low temperature. To understand why this simple compound exhibits NTE we performed first principle calculations. These calculations reproduce qualitatively the experimental temperature dependence of volume.

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