Anomalous Larmour frequency dependence of proton spin-lattice relaxation time (T-1) in the ferroelectric glycine phosphite

Authors
Kannan, R Ramesh, KP Ramakrishna, J
Citation
R. Kannan et al., Anomalous Larmour frequency dependence of proton spin-lattice relaxation time (T-1) in the ferroelectric glycine phosphite, PHYS ST S-B, 225(1), 2001, pp. 157-162
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
03701972 → ACNP
Volume
225
Issue
1
Year of publication
2001
Pages
157 - 162
Database
ISI
SICI code
0370-1972(200105)225:1<157:ALFDOP>2.0.ZU;2-N
Abstract
We report here the results of our H-1 NMR spin-lattice relaxation time (T-1 ) studies in glycine phosphite which is ferroelectric below 224 K. The expe riments have been carried out in the temperature range from 200 to 419 K an d at two Larmour frequencies of 11.40 and 23.56 MHz. We have noticed a Larm our frequency dependence of T-1 on the high-temperature side of the T-1 min imum. A model is proposed based on the BPP theory to explain the observatio n.