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Study of the Ultraslow Critical Dynamics of the Order Parameter of the Ferroelectric AgNa(NO 2 ) 2 by the Spin Relaxation Times T 1 , T 1ϱ , T 2 of the 23 Na Nucleus
Author(s) -
Grossmann J.,
Müller D.,
Petersson J.
Publication year - 1978
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.2220880110
Subject(s) - condensed matter physics , ferroelectricity , relaxation (psychology) , dipole , order (exchange) , spin (aerodynamics) , dynamics (music) , physics , materials science , dielectric , thermodynamics , quantum mechanics , psychology , social psychology , finance , acoustics , economics
Measurements are made of the temperature dependences of the spin relaxation times T 1 , T 1ϱ , and T 2 of the 23 Na nucleus in the uniaxial ferroelectric AgNa(NO 2 ) 2 . Although none of these quantities shows an anomalous behaviour near T c their temperature dependences can be ascribed to the dynamics of the electric dipoles which cause the ferroelectricity.