Interplay of S = 5 / 2 spin-tetramer cluster magnetism and magnetodielectric effect in polar Ba 6 Nd 2 Fe 4 O 15
Year: 2025
Type: article
Abstract: Cluster magnetism has emerged as a fertile platform for exploring unconventional magnetic and dielectric phenomena in complex oxides. In the polar compound Ba${}_{6}$Nd${}_{2}$Fe${}_{4}$O${}_{15}$, a detailed examination of temperature- and field-dependent magnetic, thermal, and dielectric properties reveals a distinct field-induced transition from an antiferromagnetic to a ferrimagnetic phase, accompanied by pronounced magnetodielectric coupling. The study establishes a direct connection between spin tetramer interactions and lattice polarization, demonstrating how localized spin clusters mediate strong cross-correlations between electric and magnetic orders. These results deepen the understanding of cluster-based magnetodielectric phenomena and their microscopic origins in polar magnetic oxides.
Source: Physical Review Materials
DOI: 10.1103/rqpb-qwkp
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: G1142188775, G1576338584, G1855427390, Single Crystal Growth of Quantum Spin Materials: Search for Exotic Spin Textures and Magnetoelectric Coupling, Explore the Synthesis and Physical Properties of New High-T C Nickelates, Advnaced Quantum Magnetic Materials: Crystal Growth and Physical Properties( II ), Explore the High-Pressure Synthesis and Physical Properties of New High-Tc Nickelates and Topological Superconductors
OpenAlex ID: W4416149785