Large Magnetodielectric Effect in (1-X) La2NiMnO6-(X) La2/3Sr1/3MnO3 Composites

• Published in: Ferroelectrics Vol. 409; no. 1; pp. 196 - 203
• Main Authors: Hou, Y., Yu, Q. X., Yao, Y. P., Huang, X. H., Dong, S. N., Chen, Y., Li, X. G.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Colchester Taylor & Francis Group 01.01.2010; Taylor & Francis
• Subjects: Composite; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric constant; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Ferroelectric materials; Magnetic fields; Magnetic properties and materials; Magnetodielectric effect; Magnetomechanical and magnetoelectric effects, magnetostriction; Magnetoresistance; Magnetoresistivity; Permittivity (dielectric function); Physics; Strategy; Ferroic material; Magnetodielectric effect; Composite materials; Composite; Magnetoelectric effects; Magnetic field effects; XRD; Magnetoresistance; Permittivity; Manganites
• ISSN: 0015-0193; 1563-5112
• DOI: 10.1080/00150193.2010.486246

A large magnetodielectric effect in (1-x) La 2 NiMnO 6 -(x) La 2/3 Sr 1/3 MnO 3 composites over wide frequency and temperature ranges is reported. The results indicate that variation of dielectric constants with magnetic fields depends non-monotonously on the molar ratio of two compounds and reaches a maximum up to 20% for x = 0.4 at the frequency of 1 MHz and field of 1 kOe at room temperature. The further analyses suggest that this effect is closely related to the magnetoresistance. These findings provide an alternative strategy to achieve a room temperature magnetodielectric response in multiferroic composites, indicating that it is promising for potential applications.