Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/1918
Title: Possible coexistence of cycloidal phases, magnetic field reversal of polarization, and memory effect in multiferroic R0.5Dy0.5MnO3 (R=Eu and Gd)
Authors: De, Chandan
Sundaresan, A.
Keywords: Applied Physics
Ferroelectric Polarization
TbMnO3
Pressure
Issue Date: 2015
Publisher: American Institute of Physics
Citation: Applied Physics Letters
107
5
De, C.; Sundaresan, A., Possible coexistence of cycloidal phases, magnetic field reversal of polarization, and memory effect in multiferroic R0.5Dy0.5MnO3 (R=Eu and Gd). Applied Physics Letters 2015, 107 (5), 5.
Abstract: We report the occurrence of both ab and bc cycloidal ordering of Mn-spins at different temperatures and their possible coexistence at low temperatures in the polycrystalline mixed rare-earth compounds, R0.5Dy0.5MnO3 (R = Eu and Gd), which exhibit extraordinary magnetoelectric properties. While the polarization of Gd0.5Dy0.5MnO3 is comparable to TbMnO3, the compound Eu0.5Dy0.5MnO3 shows high value of polarization. However, both of them show giant magnetic tunability and exhibit large magnetocapacitance whose sign changes across the two cycloidal ordering temperatures. Intriguingly, the electric polarization can be reversed upon ramping up or ramping down the magnetic field, which has not been observed for any of the RMnO3 system. Most strikingly, these compounds show non-volatile ferroelectric memory effect even in the paraelectric and paramagnetic region (T-C <= T <= 80 K). We attribute these remarkable properties to the coexistence of ab and bc cycloidal ordered phases. (C) 2015 AIP Publishing LLC.
Description: Restricted access
URI: http://hdl.handle.net/10572/1918
ISSN: 0003-6951
Appears in Collections:Research Articles (Sundaresan A.)

Files in This Item:
File Description SizeFormat 
36.pdf3.95 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.