Structural transition and magnetic properties of Mn doped Bi 0.88 Sm 0.12 FeO 3 ceramics.

Autor: Hien NT; Ceramics and Biomaterials Research Group, Advanced Institute of Materials Science, Ton Duc Thang University Ho Chi Minh City Vietnam nguyenthihien@tdtu.edu.vn.; Faculty of Applied Sciences, Ton Duc Thang University Ho Chi Minh City Vietnam., Vinh ND; Department of Physics and Chemistry, Thai Nguyen University of Sciences Thai Nguyen Vietnam thopt@tnus.edu.vn., Dang NV; Department of Physics and Chemistry, Thai Nguyen University of Sciences Thai Nguyen Vietnam thopt@tnus.edu.vn., Trang TT; Department of Physics and Chemistry, Thai Nguyen University of Sciences Thai Nguyen Vietnam thopt@tnus.edu.vn., Van HT; Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam., Thao TT; Department of Physics and Chemistry, Thai Nguyen University of Sciences Thai Nguyen Vietnam thopt@tnus.edu.vn., Hue LT; Department of Physics and Chemistry, Thai Nguyen University of Sciences Thai Nguyen Vietnam thopt@tnus.edu.vn., Tho PT; Department of Physics and Chemistry, Thai Nguyen University of Sciences Thai Nguyen Vietnam thopt@tnus.edu.vn.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2020 Mar 26; Vol. 10 (20), pp. 11957-11965. Date of Electronic Publication: 2020 Mar 26 (Print Publication: 2020).
DOI: 10.1039/d0ra01642j
Abstrakt: We investigated the effects of Mn doping on the crystal structure, phonon vibration, and magnetic properties of Bi 0.88 Sm 0.12 FeO 3 ceramics. Mn doping effectively modified the rhombohedral symmetry and induced a structural transition from an R 3 c rhombohedral to Pnam orthorhombic structure. Magnetic measurements revealed a weak ferromagnetic behavior, which was related to the canted antiferromagnetic order of the Pnam structure. The cycloidal spin structure of the R 3 c phase could not be suppressed by substitution of Mn at the Fe site. Studies on the self-phase transition and electric field-induced structural transition revealed many changes in coercivity and remanent magnetization, which are believed to originate from the R 3 c / Pnam phase switching along with spin frustration. Observations of the field step-dependent hysteresis loop and the ferromagnetic-like hysteresis loop after poling in an electric field provided direct evidence of phase boundary (PB) ferromagnetism and magnetic coupling at the PB.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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