Molecular impurity ions as centres with charge transfer degrees of freedom. Influence on ferroelectric phase transitions.

Vikhnin, V. S.; Maksimowa, T. I.; Hanuza, J.

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Tytuł artykułu

Molecular impurity ions as centres with charge transfer degrees of freedom. Influence on ferroelectric phase transitions.

Autorzy

Vikhnin V. S. , Maksimowa T. I. , Hanuza J.

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Abstrakty

The concept of molecular impurity ions (MI) as centres with charge transfer degrees of freedom, interacting (through the order parameter of the phase transition) with local vibrations and non-soft phonons, as well as with light, has been developed. It has been shown that MI can significantly influence a ferroelectric phase transition (FPT) due to a direct interaction of their specific charge transfer degrees of freedom with the ferroelectric order parameter. In this work, we predict a significant increase of the FPT critical temperature when increasing the MI concentration. The e MnO4- molecular impurity ions embedded in ferroelectric crystals (e.g. molybdates, tungstates, chromates, phosphates) are considered as possible candidates capable of inducing this effect.

Słowa kluczowe

molecular impurity ions charge transfer ferroelectric phase transition critical temperature

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2005

Tom

Vol. 23, No. 3

Strony

677--684

Opis fizyczny

Bibliogr. 24 poz.

Twórcy

autor

Vikhnin V. S.

autor

Maksimowa T. I.

autor

Hanuza J.

AF Ioffe Physical-Technical Institute Russian Academy of Sciences, 194021, St.- Petersburg, Russia, hanuza@int.pan.wroc.pl

Bibliografia

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[19] HANUZA J., MACZKA M., HERMANOWICZ K., MAKSIMOVA T., in preparation.
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Typ dokumentu

Bibliografia

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bwmeta1.element.baztech-article-BPW1-0022-0037