Synergistic enhancement of magnetic, dielectric, and optical properties in vanadium-substituted LaMnO3 multiferroics
- 1Department of Inorganic Chemistry, National Research Centre 33 El Buhouth St. (former Eltahrir St.), Dokki Giza 12622 Egypt [email protected].
- 2Department of Physical Chemistry, National Research Centre 33 El Buhouth St. (former Eltahrir St.), Dokki Giza Egypt [email protected].
Abstract
Perovskite manganites, specifically LaMnO₃, emerge as promising candidates for multiferroic and multifunctional devices arising from charge, spin, lattice coupling interplay. Herein, we present B-site vanadium substitution, La(Mn1-x V x )O₃ (x = 0-0.05, sol-gel synthesized) as an effective route for tuning these properties. XRD demonstrates dominant trigonal R3̄c phase with minor V₂O₃/La₂O₃ secondary phases at V-loading above 1%, while unit cell volume shows sharp expansion at low doping levels before saturating. V-substitution induces a progressive blue shift in the absorption edge, with band gap increases (from 0.768 to 0.886 eV) via bandwidth narrowing and a Burstein-Moss-type effect, and drives a 13-fold enhancement in dielectric constant through Maxwell-Wagner-Sillars interfacial polarization. Magnetically an enhancement in room-temperature ferromagnetism was attained with saturation magnetization reaching 3.52 emu g⁻¹ (LMV5) and coercivity peaking at LMV3 (140% increase over the pristine LaMnO₃). These results establish vanadium as a versatile dopant for engineering multifunctional manganites.
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BibTeX
@article{wahba2026synergistic,
title = {{Synergistic enhancement of magnetic, dielectric, and optical properties in vanadium-substituted LaMnO3 multiferroics}},
author = {Mohammed Ahmed Wahba and Rabab K Khaled},
journal = {RSC advances},
year = {2026},
month = nov,
doi = {10.1039/d6ra04264c},
url = {https://europepmc.org/article/PMC/PMC13725864},
note = {CC BY},
}
RIS
TY - JOUR
TI - Synergistic enhancement of magnetic, dielectric, and optical properties in vanadium-substituted LaMnO3 multiferroics
AU - Mohammed Ahmed Wahba
AU - Rabab K Khaled
PY - 2026
DA - 2026/11/02
JO - RSC advances
DO - 10.1039/d6ra04264c
UR - https://europepmc.org/article/PMC/PMC13725864
AB - Perovskite manganites, specifically LaMnO₃, emerge as promising candidates for multiferroic and multifunctional devices arising from charge, spin, lattice coupling interplay. Herein, we present B-site vanadium substitution, La(Mn1-x V x )O₃ (x = 0-0.05, sol-gel synthesized) as an effective route for tuning these properties. XRD demonstrates dominant trigonal R3̄c phase with minor V₂O₃/La₂O₃ secondary phases at V-loading above 1%, while unit cell volume shows sharp expansion at low doping levels before saturating. V-substitution induces a progressive blue shift in the absorption edge, with band gap increases (from 0.768 to 0.886 eV) via bandwidth narrowing and a Burstein-Moss-type effect, and drives a 13-fold enhancement in dielectric constant through Maxwell-Wagner-Sillars interfacial polarization. Magnetically an enhancement in room-temperature ferromagnetism was attained with saturation magnetization reaching 3.52 emu g⁻¹ (LMV5) and coercivity peaking at LMV3 (140% increase over the pristine LaMnO₃). These results establish vanadium as a versatile dopant for engineering multifunctional manganites.
SN - 2046-2069
ER -