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I. E. Chupis

Publications and source records attributed to I. E. Chupis.

2 recordsLinked to original sources

Ferroelectromagnets. Fifty years after discovery

Ferroelectromagnets - compounds with ferroelectric and magnetic orderings - were discovered about fifty years ago. They are of great interest due to the possibility of mutual control of electric (magnetic) properties by magnetic (electric) field. At present such possibility of magnetoelectric control has become reality which stimulated revival of scientific and practical interest in ferroelectromagnets. The progress in experimental and theoretical investigations of magnetoelectric phenomena in ferroelectromagnets for the last years, especially the colossal magnetoelectric effects observed recently, are considered. The problems and future prospects of enhancing magnetoelectric effects in ferroelectromagnets are being discussed. The book is intended for researchers in ferroelectricity and magnetism and for students of physical specialities.

cond-mat.mtrl-sci

Possible display of phason mode of electromagnons in TbMnO3

The interaction of light in terahertz frequency region with electromagnons in a sinusoidal incommensurate magnetic state in TbMnO3 is studied. A significant change in the frequency dependence of the dielectric constant e_zz near the temperature of the phase transition from sinusoidal magnetic ordering to spiral spin structure with a spontaneous electric poiarization is predicted. Phason mode of this phase transition is the mode of electromagnon with ME coupling proportional to the wave number of modulation structure.

cond-mat.other