We have employed Raman spectroscopy in order to study the mechanism of the significantly increased ferroelectric phase transition temperatures in proton-irradiated K(H1−x Dx)2PO4 crystals. Prominent changes occurred in the asymmetric stretching vibration mode frequency of D2PO4 molecules in the proton-irradiated crystals, thus stating the role of the lattice coupled to H/D.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (Project No. 2013057555 , 2016005659 , and NRF-2010-0027963 ). Measurements at the Korea Basic Science Institute are acknowledged.
- Ferroelectric phase transition mechanism
- Raman spectroscopy
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)