Enhancement of magnetic and ferroelectric properties of BiFeO3 by Er and transition element (Mn, Co) co-doping

Yumin Han; Weiwei Mao; Chuye Quan; Xingfu Wang; Jianping Yang; Tao Yang; Xing'Ao Li; Wei Huang

doi:10.1016/j.mseb.2014.05.012

Enhancement of magnetic and ferroelectric properties of BiFeO₃ by Er and transition element (Mn, Co) co-doping

Yumin Han, Weiwei Mao, Chuye Quan, Xingfu Wang, Jianping Yang, Tao Yang, Xing'Ao Li, Wei Huang

Nanjing University of Posts and Telecommunications

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

BiFeO₃(BFO), Bi_0.8Er_0.2FeO₃ (BEFO), Bi_0.8Er_0.2Fe_0.9Mn_0.1O ₃ (BEFMO) and Bi_0.8Er_0.2Fe_0.9Co _0.1O₃(BEFCO) nanoparticles were prepared by sol-gel method having an average size of 200 nm for BFO, under100 nm for BEFO and under 60 nm for BEFMO and BEFCO. Phase transition from a rhombohedral symmetry (R3c) for BFO to an orthorhombic symmetry (Ibmm) for BEFO, BEFMO and BEFCO has been observed. The phase transformation combined with size reduction has significantly improved both ferroelectric and ferromagnetic behaviors of the doped samples in a similar way. The formation of dipolar defect complexes (DDCs) in the doped samples also contributes to the improved ferroelectric property with saturated polarization (Ps) of 0.375 μC/cm² and remanent polarization (Pr) of 0.244 μC/cm² for BEFMO. Size effect may also impact the simultaneously developed Pr for BEFMO and BEFCO. Owning to the interactions between the ferromagnetic and antiferromagnetic microdomains, improved saturated magnetization (Ms) and remanent magnetization (Mr) are also observed in BEFMO.

Original language	English
Pages (from-to)	26-30
Number of pages	5
Journal	Materials Science and Engineering: B
Volume	188
DOIs	https://doi.org/10.1016/j.mseb.2014.05.012
State	Published - Oct 2014
Externally published	Yes

Keywords

Ferroelectric
Ferromagnetic
Nanoparticles
Phase transformation
Sol-gel method

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10.1016/j.mseb.2014.05.012

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title = "Enhancement of magnetic and ferroelectric properties of BiFeO3 by Er and transition element (Mn, Co) co-doping",

abstract = "BiFeO3(BFO), Bi0.8Er0.2FeO3 (BEFO), Bi0.8Er0.2Fe0.9Mn0.1O 3 (BEFMO) and Bi0.8Er0.2Fe0.9Co 0.1O3(BEFCO) nanoparticles were prepared by sol-gel method having an average size of 200 nm for BFO, under100 nm for BEFO and under 60 nm for BEFMO and BEFCO. Phase transition from a rhombohedral symmetry (R3c) for BFO to an orthorhombic symmetry (Ibmm) for BEFO, BEFMO and BEFCO has been observed. The phase transformation combined with size reduction has significantly improved both ferroelectric and ferromagnetic behaviors of the doped samples in a similar way. The formation of dipolar defect complexes (DDCs) in the doped samples also contributes to the improved ferroelectric property with saturated polarization (Ps) of 0.375 μC/cm2 and remanent polarization (Pr) of 0.244 μC/cm2 for BEFMO. Size effect may also impact the simultaneously developed Pr for BEFMO and BEFCO. Owning to the interactions between the ferromagnetic and antiferromagnetic microdomains, improved saturated magnetization (Ms) and remanent magnetization (Mr) are also observed in BEFMO.",

keywords = "Ferroelectric, Ferromagnetic, Nanoparticles, Phase transformation, Sol-gel method",

author = "Yumin Han and Weiwei Mao and Chuye Quan and Xingfu Wang and Jianping Yang and Tao Yang and Xing'Ao Li and Wei Huang",

year = "2014",

month = oct,

doi = "10.1016/j.mseb.2014.05.012",

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journal = "Materials Science and Engineering: B",

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TY - JOUR

T1 - Enhancement of magnetic and ferroelectric properties of BiFeO3 by Er and transition element (Mn, Co) co-doping

AU - Han, Yumin

AU - Mao, Weiwei

AU - Quan, Chuye

AU - Wang, Xingfu

AU - Yang, Jianping

AU - Yang, Tao

AU - Li, Xing'Ao

AU - Huang, Wei

PY - 2014/10

Y1 - 2014/10

N2 - BiFeO3(BFO), Bi0.8Er0.2FeO3 (BEFO), Bi0.8Er0.2Fe0.9Mn0.1O 3 (BEFMO) and Bi0.8Er0.2Fe0.9Co 0.1O3(BEFCO) nanoparticles were prepared by sol-gel method having an average size of 200 nm for BFO, under100 nm for BEFO and under 60 nm for BEFMO and BEFCO. Phase transition from a rhombohedral symmetry (R3c) for BFO to an orthorhombic symmetry (Ibmm) for BEFO, BEFMO and BEFCO has been observed. The phase transformation combined with size reduction has significantly improved both ferroelectric and ferromagnetic behaviors of the doped samples in a similar way. The formation of dipolar defect complexes (DDCs) in the doped samples also contributes to the improved ferroelectric property with saturated polarization (Ps) of 0.375 μC/cm2 and remanent polarization (Pr) of 0.244 μC/cm2 for BEFMO. Size effect may also impact the simultaneously developed Pr for BEFMO and BEFCO. Owning to the interactions between the ferromagnetic and antiferromagnetic microdomains, improved saturated magnetization (Ms) and remanent magnetization (Mr) are also observed in BEFMO.

AB - BiFeO3(BFO), Bi0.8Er0.2FeO3 (BEFO), Bi0.8Er0.2Fe0.9Mn0.1O 3 (BEFMO) and Bi0.8Er0.2Fe0.9Co 0.1O3(BEFCO) nanoparticles were prepared by sol-gel method having an average size of 200 nm for BFO, under100 nm for BEFO and under 60 nm for BEFMO and BEFCO. Phase transition from a rhombohedral symmetry (R3c) for BFO to an orthorhombic symmetry (Ibmm) for BEFO, BEFMO and BEFCO has been observed. The phase transformation combined with size reduction has significantly improved both ferroelectric and ferromagnetic behaviors of the doped samples in a similar way. The formation of dipolar defect complexes (DDCs) in the doped samples also contributes to the improved ferroelectric property with saturated polarization (Ps) of 0.375 μC/cm2 and remanent polarization (Pr) of 0.244 μC/cm2 for BEFMO. Size effect may also impact the simultaneously developed Pr for BEFMO and BEFCO. Owning to the interactions between the ferromagnetic and antiferromagnetic microdomains, improved saturated magnetization (Ms) and remanent magnetization (Mr) are also observed in BEFMO.

KW - Ferroelectric

KW - Ferromagnetic

KW - Nanoparticles

KW - Phase transformation

KW - Sol-gel method

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U2 - 10.1016/j.mseb.2014.05.012

DO - 10.1016/j.mseb.2014.05.012

M3 - 文章

AN - SCOPUS:84903277711

SN - 0921-5107

VL - 188

SP - 26

EP - 30

JO - Materials Science and Engineering: B

JF - Materials Science and Engineering: B

ER -

Enhancement of magnetic and ferroelectric properties of BiFeO₃ by Er and transition element (Mn, Co) co-doping

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