Structural, magnetic, dielectric and 57Fe Mössbauer spectroscopic studies on Fe1-xCexVO4: a type-II multiferroic material

• Published in: Journal of materials science. Materials in electronics Vol. 32; no. 6; pp. 7399 - 7409
• Main Authors: Bera, Ganesh, Surampalli, Akash, Mal, P., Reddy, V. R., Kumar, Kranti, Sagdeo, Archna, Rajput, Parasmani, Das, Pradip, Turpu, G. R.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2021; Springer Nature B.V
• Subjects: Antiferromagnetism; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coupling; Crystal lattices; Crystal structure; Dielectrics; Doping; Ferric ions; Ferroelectricity; Iron 57; Lattice parameters; Low temperature; Magnetic fields; Magnetic transitions; Magnetism; Materials Science; Multiferroic materials; Optical and Electronic Materials; Phase transitions; Triclinic crystals; X ray absorption
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-05453-0

Here, we report detailed studies on magnetic phase transitions and magneto-electric (ME) coupling in Fe 1 - x Ce x VO 4 . X-ray diffraction (XRD) and Raman spectroscopic measurements confirm triclinic crystal structure (P-1) with small variation in lattice parameters and Ce incorporation into the FeVO 4 lattice up to 10% of Ce. The presence of local lattice distortions and electronic inductive effect in FeVO 4 between Fe 3 + and V 5 + ions were found in X-ray absorption near edge structure (XANES) studies due to the presence of Fe 3 + –O– V 5 + linkages. Two antiferromagnetic (AFM) transitions similar to FeVO 4 appear at 21.86 K and 16.03 K, and Ce doping has little effect on the magnetic transitions. 57 Fe Mössbauer spectroscopic results show the invariance of Fe valance. Low temperature high magnetic field Mössbauer data depicts the presence of spiral AFM order in all the samples. A sharp peak at 16.0 K in dielectric permittivity with minimal suppression due to applied magnetic field is observed indicating the presence of ferroelectricity and magneto-dielectric coupling. Magnetic and ME transitions are almost robust against Ce doping.