Magnetic Behaviour of Perovskite Compositions Derived from BiFeO3

Abstract

The phase content and sequence, the crystal structure, and the magnetic properties of perovskite solid solutions of the (1−y)BiFeO3–yBiZn0.5Ti0.5O3 series (0.05 ≤ y ≤ 0.90) synthesized under high pressure have been studied. Two perovskite phases, namely the rhombohedral R3c and the tetragonal P4mm, which correspond to the structural types of the end members, BiFeO3 and BiZn0.5Ti0.5O3, respectively, were revealed in the as-synthesized samples. The rhombohedral and the tetragonal phases were found to coexist in the compositional range of 0.30 ≤ y ≤ 0.90. Magnetic properties of the BiFe1−y[Zn0.5Ti0.5]yO3 ceramics with y < 0.30 were measured as a function of temperature. The obtained compositional variations of the normalized unit-cell volume and the Néel temperature of the BiFe1−y[Zn0.5Ti0.5]yO3 perovskites in the range of their rhombohedral phase were compared with the respective dependences for the BiFe1−yB3+yO3 perovskites (where B3+ = Ga, Co, Mn, Cr, and Sc). The role of the high-pressure synthesis in the formation of the antiferromagnetic states different from the modulated cycloidal one characteristic of the parent BiFeO3 is discussed.

Rare-earth doped BiFe0.95Mn0.05O3 nanoparticles for potential hyperthermia applications

“…( Silva et al, 2011 ), ( Dubey et al, 2019 ) Usually, Fe is substituted by transition metals. ( Salak et al, 2021 ). Among them, manganese is of particular importance due to its own magnetic moment and multiple oxidation states.…”

Hydrothermal Synthesis, Phase Analysis, and Magneto-Electronic Characterizations of Lead-Free Ferroelectric BM2+(Zn, Ca, Mg)T–BFO System

“…Piezoelectric properties (d 33 constant) of the fabricated ceramics were investigated at room temperature using a piezoelectric meter (model YE2730A, Sinocera, China) at a constant force of 25 × 10 −3 N. 46 Whereas, the XRD peaks and JCPDS card no. 86-1518 match up nicely with the perovskite distorted rhombohedral BiFeO 3 structure 17 or monoclinic phase 30,38 in BiFe 1−y [Zn 0.5 Ti 0.5 ]yO 3 . Most of the corresponding peaks are indexed for both phases with the least impurity, and MPBs are visualized at x = 0.4.…”

“…Whereas, the XRD peaks and JCPDS card no. 86-1518 match up nicely with the perovskite distorted rhombohedral BiFeO 3 structure or monoclinic phase , in BiFe 1– y [Zn 0.5 Ti 0.5 ] y O 3 . Most of the corresponding peaks are indexed for both phases with the least impurity, and MPBs are visualized at x = 0.4.…”

“…Conversion polymorphism, a common occurrence in a high-pressure environment, was shown to be the cause of the observed result. Therefore, a thorough analysis of the structure, dielectric nature, and magnetic behavior of the as-prepared and switched polymorphism of the (1 – y )­BiFeO 3– y BiScO 3 perovskites has been conducted. − Additionally, BiFeO 3 solid forms developed in conjunction with additional ABO 3 -type perovskites, including NaNbO 3 , BaTiO 3 , CaTiO 3 , SrTiO 3 , and Bi 0.5 Na 0.5 TiO 3 . One of the systems that is investigated most extensively is BiFeO 3 –BaTiO 3 (BF–BT) .…”

Composition-, temperature- and pressure-induced transitions between high-pressure stabilized perovskite phases of the (1-x)BiFe0.5Sc0.5O3 - xLaFe0.5Sc0.5O3 series

“…[8][9][10][11], and references therein). More than 10 at.% replacements of iron, as a rule, are impossible to achieve using conventional synthesis techniques and require high-pressure synthesis [12][13][14][15][16][17][18][19]. Therefore, Bi(B,Fe)O 3 compositions are much less studied than (A,Bi)FeO 3 .…”