Isotope effect on the Verwey transition temperature of magnetite | Zendy

Terukov E. I. | Zendy; Reichelt W. | Zendy; Ihle D. | Zendy; Oppermann H. | Zendy

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Isotope effect on the Verwey transition temperature of magnetite

Author(s) -

Terukov E. I.,

Reichelt W.,

Ihle D.,

Oppermann H.

Publication year - 1979

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.2220950219

Subject(s) - charge ordering , magnetite , condensed matter physics , kinetic isotope effect , electron , charge (physics) , transition temperature , phonon , condensation , isotope , materials science , chemistry , superconductivity , thermodynamics , physics , atomic physics , quantum mechanics , metallurgy , deuterium

Electrical resistance and DTA measurements on single crystals of Fe 3 O 4 , in which the oxygen is partially replaced by the stable isotope 18 O, show a positive isotope shift in the Verwey transition temperature T V of δT V = (6.1 ± 0.05) K for the 18 O concentration of 43%. This result can be qualitatively explained by a theory which is based on the concept of the condensation of a coupled charge density–phonon mode at T V and takes into account both the electron–phonon and the electron–electron interactions.

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