Disappearance of spiral spin order and field induced spin reorientation transition in Fe1−xCrxVO4 (0.1≤x≤0.3) multiferroic: 57Fe Mössbauer spectroscopic studies

• Published in: Physica. B, Condensed matter Vol. 646
• Main Authors: Bera, Ganesh, Kuila, Manik, Mal, P., Reddy, V.R., Das, Pradip, Turpu, G.R.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2022
• Subjects: AFM transition; FeVO4; Field induced SRT; Mössbauer spectroscopy; Spiral spin order; FeVO4; Mössbauer spectroscopy; Spiral spin order; AFM transition; Field induced SRT
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2022.414236

Here we report a progressive suppression of spiral spin order and evidence for disappearance of spin reorientation transition (SRT) in Fe1−xCrxVO4 (0.1 ≤x≤ 0.3) studied by low temperature and high magnetic field (LTHM) Mössbauer spectroscopy (MS). Variation in the area ratio of lines 2 and 3 (A23) with external magnetic field confirms the presence of antiferromagnetic (AFM) ordering for all the compositions at the lowest temperatures (5 K). Field induced spin reorientation transition is being observed in both triclinic (x = 0.10) and mixed phase (x = 0.175) systems, evidenced by the change in the sign of quadrupole shift (QS) value at low temperatures, where as the SRT is absent in the monoclinic phase (x = 0.20 and 0.30). MS line width (Γ) values indicate the presence of spiral spin order in T-phase, partial suppression in mixed phase (T + M) and finally complete suppression for the M-phases. •A detailed Mössbauer spectroscopic study on the effect of structural transition in Cr doped FeVO4 are manifested in the article.•The variation in the A23 parameter suggests the AFM interactions in the system.•Quadruple variations along with the structural studies suggest the local lattice correlation with the multiferroic transitions.•Spin reorientation transition and it’s suppression with the varying structural symmetry with Cr substitution is established.•Disappearance of spiral spin order with the structural transition with Cr doping is being established.