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Proton Magnetic Resonance Study of N(CH 3 ) + 4 Cation Motion in Ferroelectric N(CH 3 ) 4 H(Cl 3 CCOO) 2
Author(s) -
ZdanowskaFra¸czek M.,
Medycki W.,
Jakubas R.,
Piślewski N.
Publication year - 1997
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 - 10.1002/1521-3951(199701)199:1<213::aid-pssb213>3.0.co;2-r
Subject(s) - ferroelectricity , proton magnetic resonance , proton , spin–lattice relaxation , relaxation (psychology) , activation energy , atmospheric temperature range , nuclear magnetic resonance , anomaly (physics) , phase transition , condensed matter physics , proton spin crisis , materials science , chemistry , lattice (music) , physics , thermodynamics , dielectric , nuclear physics , psychology , social psychology , optoelectronics , acoustics
The proton spin–lattice relaxation time in ferroelectric N(CH 3 ) 4 H(Cl 3 CCOO) 2 has been studied in the temperature range from 280 to 50 K. The data indicate that the dominant relaxation mechanism for T 1 below the phase transition temperature can be attributed to the onset of C 3 reorientation of CH 3 groups with activation energy 16.6 kJ/mol. An anomaly of T 1 at T c = 212 K was also observed.