31P-NMR Study of Phase Transition in Betaine Phosphate (CH3)3NCH2COO·H3PO4 at 365 K

31P-NMR Study of Phase Transition in Betaine Phosphate (CH3)3NCH2COO·H3PO4 at 365 K

The phase transition in (CH3)3NCH2COO·H3PO4 at TC1=365 K was studied by 31P-NMR. Spin-lattice relaxation time shows a sharp dip at TC1 due to the critical slowing down. The critical relaxation rate is reproduced by the quasi-one-dimensional Ising model with antiferroelectric interactions along both...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Physical Society of Japan Vol. 73; no. 6; p. 1423
Main Authors: Murashima, Ryota, Sanjo, Yohtarou, Machida, Mitsuo
Format: Journal Article
Language:English
Published: Tokyo The Physical Society of Japan 01-06-2004
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The phase transition in (CH3)3NCH2COO·H3PO4 at TC1=365 K was studied by 31P-NMR. Spin-lattice relaxation time shows a sharp dip at TC1 due to the critical slowing down. The critical relaxation rate is reproduced by the quasi-one-dimensional Ising model with antiferroelectric interactions along both the intrachain and interchain directions. The interaction parameters for intrachain J|| and interchain J[perpendicular] are determined to be 693(3) and 4.1(1) K, respectively.
ISSN:0031-9015
1347-4073