Ordering of the O(2)…D… O(2) bonds near the phase transition in KD3(SeO3)2 single crystals by D nuclear magnetic resonance

• Authors: Ae Lim , Se-Young Jeong
• Languages of publication: EN

Abstracts

EN

Deuterium resonance investigations of KD3(SeO3)2 single crystals have been performed near the phase transition temperature T
C. There are two types of deuterium bonds in these crystals with different behaviors at this phase transition. Our experimental results show that there are significant changes in the D spinlattice relaxation time T
1 at T
C; the abrupt decrease in T
1 near T
C can be explained by the critical slowing down of an overdamped soft pseudospin-type deuteron mode. Further, the ordering of the O(2)…D… O(2) bonds is affected by the phase transition, whereas the ordering of the O(1)-D… O(3) bonds is unaffected. The D NMR measurements also show that the D(2) deuteron disordering above T
C is dynamic and not static.

Keywords

EN

KH3(SeO3)2 ; KD3(SeO3)2 ; ferroelectrics; phase transition; nuclear magnetic resonance and relaxation

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2013
• Volume: 11
• Issue: 1
• Pages: 124-129

Dates

published

1 - 1 - 2013

online

15 - 1 - 2013

Contributors

author

Ae Lim

• Department of Science Education, Jeonju University, Jeonju, 560-759, Korea

author

Se-Young Jeong

• School of Nanoscience and Technology, Pusan National University, Miryang, 627-706, Korea

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Identifiers

DOI

10.2478/s11534-012-0120-1