Impedance study near the ferroelastic transition in TlH2PO 4

S. H. Kim, K. W. Lee, I. M. Kim, Cheol Eui Lee, Kwang Sei Lee

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8 Citations (Scopus)


The high temperature phase in Tl H2 P O4, a hydrogen-bonded antiferroelectric/ferroelastic material, was investigated by ac impedance measurements. A Warburg diffusion was manifested in the low-frequency region in the Cole-Cole plots near the ferroelastic transition temperature Tc′ =357 K, indicating a surface instability. The temperature dependent impedance, analyzed by a simple equivalent circuit model, was discussed in view of hydrogen delocalization on the surface.

Original languageEnglish
Article number192901
JournalApplied Physics Letters
Issue number19
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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