Tunable polarization and magnetization at room-temperature in narrow bandgap Aurivillius Bi6Fe2−xCox/2Nix/2Ti3O18

Tiantian Wang; Hongmei Deng; Xiankuan Meng; Huiyi Cao; Wenliang Zhou; Peng Shen; Yuanyuan Zhang; Pingxiong Yang; Junhao Chu

doi:10.1016/j.ceramint.2017.04.010

Tunable polarization and magnetization at room-temperature in narrow bandgap Aurivillius Bi₆Fe_2−xCo_x/2Ni_x/2Ti₃O₁₈

Tiantian Wang
, Hongmei Deng
, Xiankuan Meng
, Huiyi Cao
, Wenliang Zhou
, Peng Shen
, Yuanyuan Zhang
, Pingxiong Yang^*
, Junhao Chu

^*Corresponding author for this work

School of Physics and Electronic Science

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

44 Scopus citations

Abstract

Aurivillius compound Bi₆Fe_2-xCo_x/2Ni_x/2Ti₃O₁₈ (xBFCNT, 0≤x≤1) ceramics synthesized by a conventional solid state method, can exhibit simultaneously visible-light response, ferroelectric and ferromagnetic orders at room-temperature. The effects of structural phases and lattice distortions on electron transitions, polarizations and orbital orderings have been systematically investigated. Narrow band gaps of xBFCNT were confirmed and modified from 2.12 eV to 1.28 eV with increasing x by ultraviolet-visible-near infrared spectrophotometer. Co and Ni ions co-doping is found to induce ferromagnetic behavior but affects adversely the ferroelectric characteristics. In particular, the x=0.4 composition show obvious ferromagnetism with maximum remnant magnetization M_r (0.5 emu/g) and saturation magnetization M_s (2.4872 emu/g), due to spin canting of Fe/Ni/Co-based sub-lattices. These results reveal rich physical phenomena and open an avenue to design promising solar-energy conversion devices and multiferroic applications.

Original language	English
Pages (from-to)	8792-8799
Number of pages	8
Journal	Ceramics International
Volume	43
Issue number	12
DOIs	https://doi.org/10.1016/j.ceramint.2017.04.010
State	Published - 15 Aug 2017

Keywords

Magnetic properties
Optical properties
Solid state reaction
Surfaces

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10.1016/j.ceramint.2017.04.010

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@article{97e7258d628c4302bbfb96fbd1372d9c,

title = "Tunable polarization and magnetization at room-temperature in narrow bandgap Aurivillius Bi6Fe2−xCox/2Nix/2Ti3O18",

abstract = "Aurivillius compound Bi6Fe2-xCox/2Nix/2Ti3O18 (xBFCNT, 0≤x≤1) ceramics synthesized by a conventional solid state method, can exhibit simultaneously visible-light response, ferroelectric and ferromagnetic orders at room-temperature. The effects of structural phases and lattice distortions on electron transitions, polarizations and orbital orderings have been systematically investigated. Narrow band gaps of xBFCNT were confirmed and modified from 2.12 eV to 1.28 eV with increasing x by ultraviolet-visible-near infrared spectrophotometer. Co and Ni ions co-doping is found to induce ferromagnetic behavior but affects adversely the ferroelectric characteristics. In particular, the x=0.4 composition show obvious ferromagnetism with maximum remnant magnetization Mr (0.5 emu/g) and saturation magnetization Ms (2.4872 emu/g), due to spin canting of Fe/Ni/Co-based sub-lattices. These results reveal rich physical phenomena and open an avenue to design promising solar-energy conversion devices and multiferroic applications.",

keywords = "Magnetic properties, Optical properties, Solid state reaction, Surfaces",

author = "Tiantian Wang and Hongmei Deng and Xiankuan Meng and Huiyi Cao and Wenliang Zhou and Peng Shen and Yuanyuan Zhang and Pingxiong Yang and Junhao Chu",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd and Techna Group S.r.l.",

year = "2017",

month = aug,

day = "15",

doi = "10.1016/j.ceramint.2017.04.010",

language = "英语",

volume = "43",

pages = "8792--8799",

journal = "Ceramics International",

issn = "0272-8842",

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number = "12",

}

TY - JOUR

T1 - Tunable polarization and magnetization at room-temperature in narrow bandgap Aurivillius Bi6Fe2−xCox/2Nix/2Ti3O18

AU - Wang, Tiantian

AU - Deng, Hongmei

AU - Meng, Xiankuan

AU - Cao, Huiyi

AU - Zhou, Wenliang

AU - Shen, Peng

AU - Zhang, Yuanyuan

AU - Yang, Pingxiong

AU - Chu, Junhao

PY - 2017/8/15

Y1 - 2017/8/15

N2 - Aurivillius compound Bi6Fe2-xCox/2Nix/2Ti3O18 (xBFCNT, 0≤x≤1) ceramics synthesized by a conventional solid state method, can exhibit simultaneously visible-light response, ferroelectric and ferromagnetic orders at room-temperature. The effects of structural phases and lattice distortions on electron transitions, polarizations and orbital orderings have been systematically investigated. Narrow band gaps of xBFCNT were confirmed and modified from 2.12 eV to 1.28 eV with increasing x by ultraviolet-visible-near infrared spectrophotometer. Co and Ni ions co-doping is found to induce ferromagnetic behavior but affects adversely the ferroelectric characteristics. In particular, the x=0.4 composition show obvious ferromagnetism with maximum remnant magnetization Mr (0.5 emu/g) and saturation magnetization Ms (2.4872 emu/g), due to spin canting of Fe/Ni/Co-based sub-lattices. These results reveal rich physical phenomena and open an avenue to design promising solar-energy conversion devices and multiferroic applications.

AB - Aurivillius compound Bi6Fe2-xCox/2Nix/2Ti3O18 (xBFCNT, 0≤x≤1) ceramics synthesized by a conventional solid state method, can exhibit simultaneously visible-light response, ferroelectric and ferromagnetic orders at room-temperature. The effects of structural phases and lattice distortions on electron transitions, polarizations and orbital orderings have been systematically investigated. Narrow band gaps of xBFCNT were confirmed and modified from 2.12 eV to 1.28 eV with increasing x by ultraviolet-visible-near infrared spectrophotometer. Co and Ni ions co-doping is found to induce ferromagnetic behavior but affects adversely the ferroelectric characteristics. In particular, the x=0.4 composition show obvious ferromagnetism with maximum remnant magnetization Mr (0.5 emu/g) and saturation magnetization Ms (2.4872 emu/g), due to spin canting of Fe/Ni/Co-based sub-lattices. These results reveal rich physical phenomena and open an avenue to design promising solar-energy conversion devices and multiferroic applications.

KW - Magnetic properties

KW - Optical properties

KW - Solid state reaction

KW - Surfaces

UR - https://www.scopus.com/pages/publications/85017186425

U2 - 10.1016/j.ceramint.2017.04.010

DO - 10.1016/j.ceramint.2017.04.010

M3 - 文章

AN - SCOPUS:85017186425

SN - 0272-8842

VL - 43

SP - 8792

EP - 8799

JO - Ceramics International

JF - Ceramics International

IS - 12

ER -

Tunable polarization and magnetization at room-temperature in narrow bandgap Aurivillius Bi₆Fe_2−xCo_x/2Ni_x/2Ti₃O₁₈

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