X-ray study of the dielectric anomaly at 161K of thiourea

X-ray study of the dielectric anomaly at 161K of thiourea

Creators Mashiyama Hiroyuki

Creators Sakamoto Mamoru

Creators Jida Shinsuke

The dielectric constant has a sharp peak at 161K in the ferroelectric phase and obeys a global Curie-Weiss law in a wide temperature range including the modulated phase. Excess X-ray scatterings are observed in the ferroelectric phase, which suggest that discommensurations remain as domain walls. The dielectric constant as a function of applied electric field indicates the oscillatory interaction between the discommensurations above 161K. The dielectric anomaly at 161K is attributed to a change of the interaction from oscillatory to exponential damping in the ferroelectric phase.

[ISSN]0015-0193

[NCID]AA00644949

https://doi.org/10.1080/00150199008224654

[isPartOf] [URI]http://www.tandf.co.uk/journals/titles/00150193.asp