Dielectric properties of proton-irradiated TIH 2PO 4

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

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We investigated hydrogen ion-beam irradiation effects on a KH 2PO 4 (KDP)-type ferroelectric system, TIH 2PO 4 (TDP), showing an antiferroelectric phase transition and a ferroelastic phase transition. A polycrystalline sample was irradiated by using a 1-MeV hydrogen ion beam to a dose of 10 15 ions/cm 2. The X-ray diffraction pattern showed a lattice elongation along the hydrogen bond direction. The complex impedance showed two different types of relaxation around the ferroelastic phase transition. A prominent decrease in the bulk dielectric constant was also observed after the irradiation. The macroscopic changes due to the irradiation are discussed in light of proton dynamics.

Original languageEnglish
Pages (from-to)433-436
Number of pages4
JournalJournal of the Korean Physical Society
Volume48
Issue number3
Publication statusPublished - 2006 Mar 1

    Fingerprint

Keywords

  • Dielectric properties
  • Proton irradiation
  • TIH PO

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this