Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-03-17
Nature 434, 364-367 (2005)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 3 figures
Scientific paper
10.1038/nature03348
Multiferroic materials, which reveal magnetic and electric order, are in the focus of recent solid state research. Especially the simultaneous occurrence of ferroelectricity and ferromagnetism, combined with an intimate coupling of magnetization and polarization via magneto-capacitive effects, could pave the way for a new generation of electronic devices. Here we present measurements on a simple cubic spinel with unusual properties: It shows ferromagnetic order and simultaneously relaxor ferroelectricity, i.e. a ferroelectric cluster state, reached by a smeared-out phase transition, both with sizable ordering temperatures and moments. Close to the ferromagnetic ordering temperature the magneto-capacitive coupling, characterized by a variation of the dielectric constant in an external magnetic field, reaches colossal values of nearly 500%. We attribute the relaxor properties to geometric frustration, which is well known for magnetic moments, but here is found to impede long-range order of the structural degrees of freedom.
Fichtl R.
Hemberger Joachim
Loidl Alois
Lunkenheimer P.
Tsurkan Vladimir
No associations
LandOfFree
Relaxor ferroelectricity and colossal magnetocapacitive coupling in ferromagnetic CdCr2S4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Relaxor ferroelectricity and colossal magnetocapacitive coupling in ferromagnetic CdCr2S4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relaxor ferroelectricity and colossal magnetocapacitive coupling in ferromagnetic CdCr2S4 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-605932