Structural transition and magnetic properties of Mn doped Bi0.88Sm0.12FeO3 ceramics
| Autor: | P.T. Tho, L. T. Hue, N. D. Vinh, N.V. Dang, N. T. Hien, H. T. Van, T. T. Thao, Tran Thu Trang |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Phase boundary Materials science Condensed matter physics General Chemical Engineering media_common.quotation_subject Frustration 02 engineering and technology General Chemistry Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Condensed Matter::Materials Science Ferromagnetism Remanence Condensed Matter::Superconductivity Phase (matter) Electric field 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 0210 nano-technology media_common |
| Zdroj: | RSC Advances. 10:11957-11965 |
| ISSN: | 2046-2069 |
| Popis: | We investigated the effects of Mn doping on the crystal structure, phonon vibration, and magnetic properties of Bi0.88Sm0.12FeO3 ceramics. Mn doping effectively modified the rhombohedral symmetry and induced a structural transition from an R3c 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 R3c 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 R3c/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. |
| Databáze: | OpenAIRE |
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