ITC technique as tool to monitor a new phase nucleation in LiF: Ti single crystals

Rosanna Capelletti, I. Földvári, Carlo Mora, Stefano Prato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Thermal treatment of LiF:Ti3+ at temperatures close to the melting point in a moist atmosphere causes the growth of new phase occlusions. Optical and electron microscopy and X-ray diffraction have shown that they are parallelepipeds and cubes of a face-centered-cubic phase coherent with the host matrix. ITC (ionic thermoconductivity) spectra support that the crystal behaves as an inhomogeneous dielectric; in fact the occlusion growth is accompanied by the appearance of new ITC bands at the expense of the band due to the reorientation of dipoles built by Ti3+ and two cation vacancies. The nucleation kinetics has been studied in this way and the Maxwell-Wagner-Sillars model was applied to interpret the ITC spectra.

Original languageEnglish
Title of host publicationProceedings - International Symposium on Electrets
PublisherPubl by IEEE
Pages539-544
Number of pages6
ISBN (Print)0780301129
Publication statusPublished - Jan 1992
Event7th International Symposium on Electrets - Berlin, Germ
Duration: Sep 25 1991Sep 27 1991

Other

Other7th International Symposium on Electrets
CityBerlin, Germ
Period9/25/919/27/91

Fingerprint

Nucleation
Single crystals
Electron microscopy
Vacancies
Optical microscopy
Melting point
Positive ions
Heat treatment
X ray diffraction
Crystals
Kinetics
Temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Capelletti, R., Földvári, I., Mora, C., & Prato, S. (1992). ITC technique as tool to monitor a new phase nucleation in LiF: Ti single crystals. In Proceedings - International Symposium on Electrets (pp. 539-544). Publ by IEEE.

ITC technique as tool to monitor a new phase nucleation in LiF : Ti single crystals. / Capelletti, Rosanna; Földvári, I.; Mora, Carlo; Prato, Stefano.

Proceedings - International Symposium on Electrets. Publ by IEEE, 1992. p. 539-544.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Capelletti, R, Földvári, I, Mora, C & Prato, S 1992, ITC technique as tool to monitor a new phase nucleation in LiF: Ti single crystals. in Proceedings - International Symposium on Electrets. Publ by IEEE, pp. 539-544, 7th International Symposium on Electrets, Berlin, Germ, 9/25/91.
Capelletti R, Földvári I, Mora C, Prato S. ITC technique as tool to monitor a new phase nucleation in LiF: Ti single crystals. In Proceedings - International Symposium on Electrets. Publ by IEEE. 1992. p. 539-544
Capelletti, Rosanna ; Földvári, I. ; Mora, Carlo ; Prato, Stefano. / ITC technique as tool to monitor a new phase nucleation in LiF : Ti single crystals. Proceedings - International Symposium on Electrets. Publ by IEEE, 1992. pp. 539-544
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