Negative thermal expansion in ZnF2
Negative thermal expansion in ZnF2
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DOI:
10.1063/1.3588414
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发表时间:
2011-05-02
影响因子:
4
通讯作者:
Hansen, Thomas C.
中科院分区:
文献类型:
--
作者:
Chatterji, Tapan;Zbiri, Mohamed;Hansen, Thomas C.
We have investigated temperature dependence of the lattice parameters and the unit cell volume of ZnF2 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. (C) 2011 American Institute of Physics. [doi:10.1063/1.3588414]