Enhancement of room temperature magneto-electric coupling effect in perovskite-spinel (1−x)BiFeO3−xZnFe2O4 nanocomposites

Nickel vanadate nitrogen-doped carbon nanocomposites for high-performance supercapacitor electrode

“…The peak at 326 °C represents organic weight loss and the disintegration of the gel structural system, whereas the peak at 632 °C represents carbon dioxide release. Ni 3 V 2 O 8 -NC exhibits a peak at 730 °C, which is above the Néel temperature, indicating the transformation of the martial from antiferromagnetic to paramagnetic [ 49 , 50 ].…”

Gd3+-substituted BiFeO3 perovskite nanoparticles: facile synthesis, characterization, and applications in heterogeneous catalysis

“…Multiferroic nanomaterials exhibit structural, optical, electric, and magnetic characteristics that result in dielectric, semiconducting, ferroelectricity, piezoelectric, antiferro/ferromagnetism, and ferroelasticity in the same phase at room temperature, while requiring empty and partly filled transition or rare-earth metal d-orbitals. [1][2][3][4][5][6] They have extensive commercial applications in magnetic/ferroelectric data storage, ecologically friendly devices, low power consumption, photosensitizers, electromagnets, spintronics, and sensor devices. [7][8][9] The chemical formula for the perovskite, which is derived from calcium titanate (CaTiO 3 ), is ABO 3 -type.…”

“…Due to the fact that it shows both the ferroelectric order at a high Curie temperature (T c ≈1103-1143 K) and anti-ferromagnetic order at the Neel temperature (T N = 651 K), it has attracted considerable interest. [3][4][5]13,14 The BFO perovskite has an R3c space group rhombohedral structure. Due to the unpaired electrons in the d shell of Fe 3+ ions and exchange or Dzyaloshinskii-Moriya (D-M) interactions via O 2− ions, the magnetic structure of BFO is a G-type antiferromagnetic, exhibiting extremely weak ferromagnetic activity.…”

“…25 In the scientific literature, a mixture of perovskite-based metal oxides is unusual due to the absence of several nanoparticles. BFO perovskite nanoparticles can be synthesized by different physical and chemical routes such as, sol-gel method, 3,24,26,27 the solid-state reaction method, 28 sonochemical approach, 1 and hydrothermal, 29,30 solvothermal, 9 and co-precipitation methods 2 can be used to synthesize Gd-doped BFO perovskite nanoparticles. Among them, combustion synthesis is one of the most popular approaches for the preparation of nanomaterials in most countries.…”