Dynamic Disorder in Negative Thermal Expansion Compound Zn(CN)2

Details Dynamic Disorder in Negative Thermal Expansion Compound Zn(CN)2 Dynamic Disorder in Negative Thermal Expansion Compound Zn(CN)2

2009-04-06

arxiv.org/abs/0904.0963v2

Physics

Condensed Matter

Materials Science

6 pages, 4 figures

Scientific paper

Dynamical disorder in negative thermal expansion compound Zn(CN)2 is investigated by quasielastic neutron scattering technique in the temperature range 170-320 K. Significant quasielastic broadening is observed above the phase transition temperature of about 250 K, however no broadening is observed at 220 K and below. Data at high temperatures are analyzed assuming the CN reorientation. Characteristic time associated with the CN orientation is estimated as 16 ps and 11 ps at 270 and 320 K respectively.

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