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APS » Journals » Phys. Rev. B » Volume 65 » Issue 10
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Phys. Rev. B 65, 104110 (2002) [4 pages]

Molecular dynamics and thermal hysteresis loops of the 60/40 vinylidene fluoride–trifluoroethylene ferroelectric copolymer

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E. López Cabarcos1,*, A. F. Braña2, B. Frick3, and F. Batallan2
1Materials Research Laboratory, University of California, Santa Barbara, California 93106-5130
2Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
3Institut Laue-Langevin, 38042 Grenoble Cedex, France

Received 29 May 2001; published 1 March 2002

The molecular nature of thermal hysteresis associated with dynamic phase transitions is investigated in ferroelectric polymers using incoherent neutron scattering. The analysis of the quasielastic neutron spectra indicates that besides the structural component, the thermal hysteresis phenomena has a contribution due to the anharmonicity of the mean-square amplitude of the vibrational motion of the protons attached to the polymeric chain.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.65.104110
DOI:
10.1103/PhysRevB.65.104110
PACS:
77.84.Jd, 05.70.Fh, 61.25.Hq, 64.70.Kb

*Permanent address: Departamento de Fisico-Quimica Farmaceutica, Facultád de Farmacia, UCM, 20840 Madrid, Spain.

 
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