Structural, magnetic, and dielectric properties of tungsten bronze Ba4Nd2Fe2-Ni Nb8O30 (0 ≤ x ≤ 1) ceramics

Crystal structure engineering of GdFeO3/Mxene composites with excellent electromagnetic wave absorption: Role of phase transition and high polarizability

“…The strong magnetic properties of GdFeO 3 are attributed to the presence of Gd and Fe ions, which have unpaired electrons that produce magnetic moments. The magnetism of GdFeO 3 can be further enhanced by the Gd →Fe magnetic moments exchange interaction [28][29][30].…”

“…Very recently, literatures reported that GFO and GFO-based composites showed highly e cient EMA performance due to high dielectric / magnetic loss capacity originated from the metallic feature and the d orbital splitting of Fe, respectively [27][28][29][30], such as GdFeO 3 /graphene aerogels, GdFeO 3 /Fe 3 O 4 @C, and GdFeO 3 /Fe 3 O 4 @MWCNTs etc.…”

“…Importantly, the phase transition in GdFeO 3 is always associated with a change in the electric, polarizability and magnetic ordering [28,29]. For example, the P-E curves of GdFeO 3 exhibit signi cant changes across the structural phase transition [30]. In the rhombohedral phase, the P-E curve is linear and exhibits weak ferroelectric behavior.…”

Preparation and dielectric properties of co-contained unfilled tungsten bronze ceramics Ba4RCo0.5Nb9.5O30

“…TTB cell is composed of an eight BO6 octahedron co-corner connection. A-site is usually filled with large-radius ions, B-site generally has a highly coordinated ion filling, and C-site is generally a vacant filling [5][6][7]. The complex structure of tungsten bronze compounds allows manual manipulation.…”

Designing rare earth-free high entropy oxides with a tungsten bronze structure for thermoelectric applications

“…eV, which remains in the range of other tungsten bronze structures. [27][28][29][30] In fact, the band gap is expected to remain almost unaffected by the multivalent cations in the A site as the valence band maxima and conduction band minima are primarily formed by the hybridization of O 2p and Nb 4d bands. Due to this large band gap, the electrical conductivity is so low that it is undetectable in the regions near room temperature.…”