Structural, magnetic and electric properties of Nd and Ni co-doped BiFeO<sub>3</sub> materials

Dao Viet Thang; Le Thi Mai Oanh; Nguyen Cao Khang; Nguyen Manh Hung; Do Danh Bich; Du Thi Xuan Thao; Nguyen Van Minh; Dao Viet Thang; Le Thi Mai Oanh; Nguyen Cao Khang; Nguyen Manh Hung; Do Danh Bich; Du Thi Xuan Thao; Nguyen Van Minh

doi:10.3934/matersci.2017.4.982

AIMS Materials Science

2017, Volume 4, Issue 4: 982-990. doi: 10.3934/matersci.2017.4.982

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Research article Topical Sections

Structural, magnetic and electric properties of Nd and Ni co-doped BiFeO₃ materials

1.
Department of Physics, Hanoi University of Mining and Geology, Duc Thang Ward, North Tuliem District, Hanoi, Vietnam
2.
Center for Nano science and Technology, Physics Faculty, Hanoi National University of Education, 136 Xuan Thuy Road, Hanoi, Vietnam

Received: 14 June 2017 Accepted: 16 August 2017 Published: 31 August 2017

Multiferroic Bi_1−xNd_xFe_0.975Ni_0.025O₃ (x = 0.00, 0.05, 0.10, 0.125, and 0.15) (BNFNO) and BiFeO₃ (BFO) materials were synthesized by a sol-gel method. Crystal structure, ferromagnetic and ferroelectric properties of the as-synthesized materials were investigated. Results showed that Nd³⁺ and Ni²⁺ co-doping affected to the electrical leakage, enhanced ferroelectric polarization and magnetization of BiFeO₃. Co-doped sample with 12.5 mol% of Nd³⁺ and 2.5 mol% of Ni²⁺ exhibited an enhancement in both ferromagnetism and ferroelectric properties up to M_S ~ 0.528 emu/g and P_S ~ 18.35 μC/cm² with applied electric field at 5 kV/cm, respectively. The origins of ferromagnetism and ferroelectricity enhancement were discussed in the paper.
- multiferroic,
- ferromagnetic,
- ferroelectric,
- polarization
Citation: Dao Viet Thang, Le Thi Mai Oanh, Nguyen Cao Khang, Nguyen Manh Hung, Do Danh Bich, Du Thi Xuan Thao, Nguyen Van Minh. Structural, magnetic and electric properties of Nd and Ni co-doped BiFeO3 materials[J]. AIMS Materials Science, 2017, 4(4): 982-990. doi: 10.3934/matersci.2017.4.982

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Abstract

Multiferroic Bi_1−xNd_xFe_0.975Ni_0.025O₃ (x = 0.00, 0.05, 0.10, 0.125, and 0.15) (BNFNO) and BiFeO₃ (BFO) materials were synthesized by a sol-gel method. Crystal structure, ferromagnetic and ferroelectric properties of the as-synthesized materials were investigated. Results showed that Nd³⁺ and Ni²⁺ co-doping affected to the electrical leakage, enhanced ferroelectric polarization and magnetization of BiFeO₃. Co-doped sample with 12.5 mol% of Nd³⁺ and 2.5 mol% of Ni²⁺ exhibited an enhancement in both ferromagnetism and ferroelectric properties up to M_S ~ 0.528 emu/g and P_S ~ 18.35 μC/cm² with applied electric field at 5 kV/cm, respectively. The origins of ferromagnetism and ferroelectricity enhancement were discussed in the paper.

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