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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access January 15, 2013

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

  • Ae Lim EMAIL logo and Se-Young Jeong
From the journal Open Physics


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.

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Published Online: 2013-1-15
Published in Print: 2013-1-1

© 2012 Versita Warsaw

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