TY - JOUR
T1 - Analysis of the effect of cationic ratio Bi3+/Fe3+ on the magnetic and multiferroic properties of BiFeO3 nanoparticles synthesized using a sonochemical-assisted method
AU - Palomino-Resendiz, R. L.
AU - Bolarín-Miró, A. M.
AU - Pedro-García, F.
AU - Sánchez-De Jesús, F.
AU - Espinós-Manzorro, J. P.
AU - Cortés-Escobedo, C. A.
N1 - Publisher Copyright:
© 2022 Elsevier Ltd and Techna Group S.r.l.
PY - 2022/5/15
Y1 - 2022/5/15
N2 - This study examined the effects of the cationic ratio of Bi3+/Fe3+ via X-ray photoelectron spectroscopy (XPS) on the magnetic and multiferroic properties of BiFeO3 nanoparticles synthesized using a sonochemical-assisted method. X-ray diffraction revealed the successful synthesis of single-phase BiFeO3 powder after annealing the sonicated material at 723 K. The powder was composed of agglomerates of rounded particles with a mean particle size of 35 nm. XPS was performed to determine the Bi3+/Fe3+ ratio as a function of the heat treatment process and its relationship with secondary phases, which can modulate the magnetic properties of the nanopowders. The cationic ratio obtained by XPS confirmed that the powders obtained at 623 and 923 K have excess Bi3+ and Fe3+, respectively, which induces the formation of Bi24Fe2O39 and Bi2Fe4O9 as the majority phases. Powder annealing at 723 K revealed a ferromagnetic order with specific magnetization of 1.8 Am2/kg. This ferromagnetic behavior was preserved after applying spark plasma sintering (SPS) at 923 K. By contrast, conventional sintering at 1023 K promotes antiferromagnetic order. In addition, the dielectric properties of the ceramic material of the sintered powders showed a behavior related to a typical ferroelectric material.
AB - This study examined the effects of the cationic ratio of Bi3+/Fe3+ via X-ray photoelectron spectroscopy (XPS) on the magnetic and multiferroic properties of BiFeO3 nanoparticles synthesized using a sonochemical-assisted method. X-ray diffraction revealed the successful synthesis of single-phase BiFeO3 powder after annealing the sonicated material at 723 K. The powder was composed of agglomerates of rounded particles with a mean particle size of 35 nm. XPS was performed to determine the Bi3+/Fe3+ ratio as a function of the heat treatment process and its relationship with secondary phases, which can modulate the magnetic properties of the nanopowders. The cationic ratio obtained by XPS confirmed that the powders obtained at 623 and 923 K have excess Bi3+ and Fe3+, respectively, which induces the formation of Bi24Fe2O39 and Bi2Fe4O9 as the majority phases. Powder annealing at 723 K revealed a ferromagnetic order with specific magnetization of 1.8 Am2/kg. This ferromagnetic behavior was preserved after applying spark plasma sintering (SPS) at 923 K. By contrast, conventional sintering at 1023 K promotes antiferromagnetic order. In addition, the dielectric properties of the ceramic material of the sintered powders showed a behavior related to a typical ferroelectric material.
KW - Bismuth ferrite (BiFeO) nanoparticles
KW - Magnetoelectric materials
KW - Multiferroic ceramic
KW - Sonochemical synthesis
KW - X-ray photoelectron spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85124213683&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2022.02.011
DO - 10.1016/j.ceramint.2022.02.011
M3 - Artículo
AN - SCOPUS:85124213683
SN - 0272-8842
VL - 48
SP - 14746
EP - 14753
JO - Ceramics International
JF - Ceramics International
IS - 10
ER -