Title :
1H-13C nuclear cross relaxation near ferroelectric diffuse phase transition of P(VDF73/TrFE27 )
Author_Institution :
Div. of Appl. Phys., Hokkaido Univ., Sapporo, Japan
Abstract :
The 13C NMR spectrum of drawn P(VDF73/TrFE 27) is measured in detail as a function of contact time using a CP/MAS NMR technique, and the observed transient magnetization oscillation of CH2, CHF, and CF groups against the contact time near the Curie temperature is interpreted in terms of 1H-13C cross-relaxation theory of spin diffusion mechanism in a heterogeneous system of both VDF and TrFE rich segmental phases
Keywords :
ferroelectric Curie temperature; ferroelectric thin films; ferroelectric transitions; nuclear magnetic resonance; nuclear spin-lattice relaxation; polymer blends; polymer films; spin dynamics; 1H-13C nuclear cross relaxation; CP/MAS NMR; Curie temperature; P(VDF73/TrFE27); contact time dependence; copolymer; ferroelectric diffuse phase transition; heterogeneous system; spin diffusion mechanism; transient magnetization oscillation; Chemicals; Cooling; Ferroelectric materials; Heating; Resonance; Solid state circuits; Temperature;
Conference_Titel :
Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-5025-1
DOI :
10.1109/ISE.1999.832098
