Interplay of multiple structural phase and magnetic response of Bi1-xPrxFeO3 ceramics. Issue 21 (1st November 2022)

• Record Type: Journal Article
• Authors: Ha, L.T.; Xuan, C.T.A.; Tam, K.T.; Co, N.D.; Quy, B.M.; Dang, N.V.; Phong, P.T.; Thang, P.D.; Long, N.D.; An, P.M.; Vinh, N.D.; Tho, P.T.
• Is Part Of: Ceramics international. Volume 48:Issue 21(2022)
• Page Start: 32027
• Page End: 32035
• Publication Date: 2022-11-01
• Subjects: Multiferroics -- Magnetic properties -- Morphotropic phase boundary; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.07.140
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The detailed structural phase transition induced by chemical substitution in Bi1-x Prx FeO3 (x = 0.1–0.2) polycrystalline ceramics is reported herein. Pr 3+ substitution is observed to destabilize the polar R3c symmetry due to the chemical strain effect caused by the large ionic radius mismatch at the Bi-site. The R3c rhombohedral phase can only be stabilized up to 14 mol% of Pr doping ( x < 0.14); the phase transition starts to appear at a higher Pr concentration (x ≥ 0.14), forming a morphotropic phase boundary between the R3c rhombohedral and Pbam orthorhombic phases. Increasing Pr concentration causes the magnetic transition from a pure antiferromagnetic to a weak ferromagnetic state as a result of the evolution of crystal structure. The influence of PB spins on the magnetic properties of Bi1-x Prx FeO3 compounds has been uncovered through manipulation of the mixed phase state by an electric field, temperature, and structural relaxation.