Enhancement of dielectric, ferroelectric and multiferroic properties (1–x) LiNbO3−(x) La0.9Na0.1MnO3 (x = 0.1, 0.2 and 0.3) nanocomposite system

• Published in: Bulletin of materials science Vol. 46; no. 3; p. 158
• Main Authors: Veena, R K, Anand, Anitha, Devi, M Manjula, Veena, V S, Bharadwaj, Suresh, Kalarikkal, Nandakumar, Cyriac, Jincemon, Sagar, S
• Format: Journal Article
• Language: English
• Published: Bangalore Indian Academy of Sciences 26-07-2023; Springer Nature B.V
• Subjects: Chemistry and Materials Science; Composite materials; Coupling; Data storage; Dielectric properties; Energy; Engineering; Ferroelectric materials; Ferroelectricity; Lithium; Lithium niobates; Magnetic materials; Magnetic properties; Materials Science; Nanocomposites; Perovskites; Spectrum analysis; Temperature; X-rays; ferroelectric; magnetoelectric coupling; magnetodielectrics; dielectric properties; Multiferroic
• ISSN: 0973-7669; 0250-4707; 0973-7669
• DOI: 10.1007/s12034-023-02992-6

This work investigates the structural, dielectric, ferroelectric and magnetoelectric coupling properties of (1−
x
) LiNbO
3 
− (
x
) La
0.9
Na
0.1
MnO
3
with
x
 = 0.1, 0.2, and 0.3 nanocomposites. The composite of ferroelectric material LiNbO
3
(LNB) and magnetic material La
0.9
Na
0.1
MnO
3
(LNMO) was synthesized by the conventional solid-state reaction method. The X-ray diffraction study confirms the formation of the perovskite samples. The crystalline sizes of the samples increased with an increase in
x
. The improved properties of these composites by the addition of LNMO were investigated through various analysis methods. The composite with
x
 = 0.3 exhibits the highest enhanced values of dielectric permittivity (
ε
′) and a.c. conductivity with the lowest activation energy
E
a
 = 1.41 eV. The highest magnetoelectric coupling property is also observed for this concentration. This material has wide application in sensors, data storage devices and in pyroelectric applications.