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Spin–Spin and Spin–Lattice Equilibrium in TCNQ ˙ − NH 4 + Salt
Author(s) -
Alizon J.,
Berthet G.,
Blanc J. P.,
Gallice J.,
Robert H.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220650217
Subject(s) - zeeman effect , paramagnetism , condensed matter physics , spin (aerodynamics) , chemistry , deuterium , electron , salt (chemistry) , electron paramagnetic resonance , relaxation (psychology) , lattice (music) , physics , nuclear magnetic resonance , magnetic field , atomic physics , thermodynamics , nuclear physics , psychology , social psychology , quantum mechanics , acoustics
In order to detect an eventual coupling between the protons of the NH 4 cations and the paramagnetic electrons an investigation is made of the free induction decay and the spin–lattice relaxation time of protons of the TCNQ · NH 4 salt and of the partly deuterated TCNQD 4 · NH 4 , TCNQ · ND 4 salts as functions of temperature. Experimental results are interpreted in terms of two Zeeman reservoirs and make evident an interaction between the paramagnetic electrons and NH 4 protons.