Affiliation:
1. 1Department of Physics, Korea University, Seoul 136-701, Korea
Abstract
AbstractThe electric field effect on 14N NQR in ferroelectric thiourea [SC(NH2)2] single crystals has been investigated at 77 K up to a field of 10 kV/cm. The measured Stark shifts are, in units of kHz • cm/ kV, dv1+ / dE + = 0.87±0.10, dv1+dE_ = 1.17±0.20, dv2 +/dE+ = 0.80±0.10, and dv2 +/dE_ = 0.90 ±0.15. These values are on the order of 102 times those found in other ferroelectric crystals such as sodium nitrite (NaNO2 ) . The remarkable difference between these two Stark shifts is discussed by taking into account the polarizability and the local electric field at the 14N sites in these crystals
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics
Cited by
1 articles.
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