Effect of Nd3+ substitution on structural, morphological, and electrical properties of Bismuth Ferrite ceramics

Study of Dielectric Relaxation Dynamics and Transport Properties of Nd3+-Substituted Bismuth Ferrite Ceramics for Energy Storage Applications

“…The syntheses of polycrystalline Nd 3+ -substituted bismuth ferrite (Bi 1– x Nd x FeO 3 ) with the composition of x = 0.0, 0.10, 0.15, 0.20 were carried out via traditional solid-state synthesis method, as previously reported . The X-ray diffractometer (XRD) (Bruker D8 advance, AXS, D76181 Karlsruhe, Germany) was employed to identify the structure and phases present in the sintered pellets of all composition.…”

“…The phase assemblage study from the Rietveld refinement also revealed that the occurrence of unwanted secondary phases (Bi 2 Fe 4 O 9 and Bi 25 FeO 40 ) has reduced from ∼4% for x = 0 to ∼0% for x = 0.2. The results obtained for the sintered samples exhibit good agreement with those of the corresponding calcined powders (reported in previous work).…”

“…This approach has been demonstrated to be both cost-effective and efficient . The incorporation of Nd 3+ into BFO ceramics resulted in a substantial reduction in leakage current density, amounting to a reduction of 4 orders of magnitude . Hence, exploring the dielectric response and permeability of Nd 3+ -substituted BFO, which is anticipated to enhance energy storage capabilities, proves intriguing.…”

High Energy Density Achieved in Novel Lead-Free BiFeO3–CaTiO3 Ferroelectric Ceramics for High-Temperature Energy Storage Applications

“…Previous investigations have demonstrated different chemical modifications to suppress the valence fluctuation of iron by (1) the substitution of different transition-metal ions in the A (Bi) site (e.g., neodymium-doped BFO) and B (Fe) sites (namely, cobalt, aluminum, manganese, titanium, etc. ) − and (2) the preparation of BFO-based ABO 3 solid solutions mixing with other transition-metal perovskites (i.e., PbTiO 3 , SrTiO 3 , BaTiO 3 , etc. ) − Similarly, in the current investigation, the XPS results revealed that the incorporation of CTO in the BFO-CTO solid solution significantly suppressed the Fe 3+ to Fe 2+ transition by inhibiting the valency fluctuations of iron ions.…”

“…Therefore, to overcome these limitations, the best way to reduce the leakage current density is to suppress the transition from Fe 3+ to Fe 2+ . Previous investigations have demonstrated different chemical modifications to suppress the valence fluctuation of iron by (1) the substitution of different transition-metal ions in the A (Bi) site (e.g., neodymium-doped BFO) and B (Fe) sites (namely, cobalt, aluminum, manganese, titanium, etc. ) − and (2) the preparation of BFO-based ABO 3 solid solutions mixing with other transition-metal perovskites (i.e., PbTiO 3 , SrTiO 3 , BaTiO 3 , etc.…”