Structural, electrical and multiferroic properties of La-doped mullite Bi2Fe4O9 thin films

Ferroelectric BiFeO3 modified PVDF-based electrolytes for high-performance lithium metal batteries

“…The Bi 2 Fe 4 O 9 crystal is also a multiferroic material with ferroelectricity and antiferromagnetism. 32,33 Furthermore, the distinct diffraction peaks at 2 θ of 18.50° and 20.04° in the XRD patterns of the PVDF and PVDF-5BFO films fit well with those of γ-PVDF. 34 As shown in the FTIR spectra in Fig.…”

Effect of cobalt substitution on structural, impedance, ferroelectric and magnetic properties of multiferroic Bi2Fe4O9 ceramics

“…Intense Raman mode formed at 220 cm -1 (BFO), 219 cm -1 (BFCO0.5), 209 cm -1 (BFCO1) and 196 cm -1 (BFCO2) is related to Fe-O vibration in FeO4 tetrahedron. Similarly, other phonon modes observed for BFO (285 cm -1 , 317 cm -1 and 424 cm -1 ), BFCO0.5 (284 cm -1 , 318 cm -1 and 426 cm -1 ), BFCO1 (279 cm -1 , 320 cm -1 and 427 cm -1 ), BFCO1.5 (275 cm -1 , 321 cm -1 and 427 cm -1 ) and BFCO2 (274 cm -1 , 324 cm -1 and 428 cm -1 ) owes to vibration of Fe-O in the FeO6 octahedron [29]. It is also important to notice an emergence of additional peak for compositions x ≥ 0.01 at 558 cm -1 (BFCO1), 561 cm -1 (BFCO1.5) and 564 cm -1 (BFCO2) as shown in fig.…”

Influence of Sputtering Power on the Structure and Electrical Properties of Bi2Fe4O9 Thin Films

“…These materials can be used in ferroelectric random access memories and also in novel magnetic memory devices due to their multifunctional properties [1,[4][5][6][7]. In addition, these materials enable the invention of novel energy-efficient multistate memory devices, which allow electrical writing and non-destructive magnetic reading operations through their coupling between electrical and magnetic orders [3,8,9]. Nowadays, the magneto-electric materials possess an essential role in various device applications like sensors, actuators, microelectromechanical and nanoelectromechanical systems, spintronics and data storage devices [10].…”