Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe 2 O 4 | Zendy

Subramanian M. A. | Zendy; He T. | Zendy; Chen J. | Zendy; Rogado N. S. | Zendy; Calvarese T. G. | Zendy; Sleight A. W. | Zendy

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Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe 2 O 4

Author(s) -

Subramanian M. A.,

He T.,

Chen J.,

Rogado N. S.,

Calvarese T. G.,

Sleight A. W.

Publication year - 2006

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.200600071

Subject(s) - materials science , ferroelectricity , dielectric , spins , dipole , condensed matter physics , drop (telecommunication) , optoelectronics , electrical engineering , physics , engineering , chemistry , organic chemistry

A very large drop in dielectric constant upon application of small magnetic fields is observed at room temperature for LuFe 2 O 4 (see figure). Such behavior is unprecedented and indicates a strong coupling of spins and electric dipoles at room temperature. This behavior of LuFe 2 O 4 is apparently related to its ferroelectricity, which occurs through the highly unusual mechanism of Fe 2+ and Fe 3+ ordering.

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