Structural evolution and coexistence of ferroelectricity and antiferromagnetism in Fe, Nb co-doped BaTiO3 ceramics

被引:10
作者
Hu, Zimeng [1 ]
Koval, Vladimir [2 ]
Yue, Yajun [3 ,4 ]
Zhang, Man [1 ]
Jia, Chenglong [5 ,6 ]
Abrahams, Isaac [3 ]
Yan, Haixue [1 ]
机构
[1] Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England
[2] Slovak Acad Sci, Inst Mat Res, Watsonova 47, Kosice 04001, Slovakia
[3] Queen Mary Univ London, Dept Chem, Mile End Rd, London E1 4NS, England
[4] Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China
[5] Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Peoples R China
[6] Lanzhou Univ, Lanzhou Ctr Theoret Phys, Lanzhou 730000, Peoples R China
基金
中国国家自然科学基金;
关键词
Dielectric; Ferroelectric; Antiferromagnetic; Multiferroics; Barium titanium iron niobium oxide; PHASE-TRANSITIONS; ROOM-TEMPERATURE; ELECTRIC-FIELD; POLARIZATION; DENSITY; EFFICIENCY; TESTS;
D O I
10.1016/j.jeurceramsoc.2023.01.034
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Multiferroics are materials that exhibit two or more primary ferroic properties within the same phase and have potential applications in sensors, spintronics and memory devices. Here, the dielectric, ferroelectric and mag-netic properties of novel multiferroics derived from BaTi1_x(Fe0.5Nb0.5)xO3 (BTFN, 0.01 <= x <= 0.10) ceramics are investigated. Multiferroism in these ceramics is manifested by the coexistence of ferroelectric long-range ordering and antiferromagnetism. With increasing x-value, there is a structural evolution from a tetragonal perovskite to a mixture of tetragonal and cubic phases, accompanied by a decrease in the temperature of maximum permittivity. At room temperature, ferroelectric behaviour is evidenced by the presence of current peaks corresponding to domain switching in the current-electric field loops, while the observation of non-linear narrow magnetic hysteresis loops suggests dilute magnetism. The results indicate that in the x = 0.07 compo-sition the antiferromagnetic order is established through an indirect super-exchange interaction between adja-cent Fe ions.
引用
收藏
页码:2460 / 2468
页数:9
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