Room temperature short-range ferromagnetic order in Ni-doped tetragonal perovskite niobate

Yi Zhou; Qing He; Fei Zhou; Yong Liu; Zhonghong Lai; Yudong Huang; Jingchuan Zhu

doi:10.1016/j.matlet.2021.130812

Room temperature short-range ferromagnetic order in Ni-doped tetragonal perovskite niobate

Yi Zhou
, Qing He
, Fei Zhou^*
, Yong Liu
, Zhonghong Lai
, Yudong Huang
, Jingchuan Zhu

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Harbin Institute of Technology

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

3 Scopus citations

Abstract

Here, we report a strong room-temperature magnetism in Ni-doped BaNbO₃. The tetragonal BaNi_xNb_(1-x)O_3-δ nano-powders are prepared by the composite-hydroxide-mediated method. The as-prepared BaNi_xNb_(1-x)O_3-δ has a saturation magnetization (M_sat) of 2.54 emu/g, a remnant magnetization (M_r) of 0.228 emu/g, and a small coercive field (Hc) of 99.14 Oe at room temperature, presenting as a short-range magnetic order. The Ni-doping leads to an incommensurate valence state of Nb, and the oxidation state of Ni in the matrix is + 2. It brings not only strong local spin polarization to the matrix, but also balances the oxygen defects and gives rise to a more doping content. The strong magnetism originated from the existence of short-range magnetic order and the strong local net spin polarization at the Fermi level (E_F), which are proved by the first-principle calculations.

Original language	English
Article number	130812
Journal	Materials Letters
Volume	305
DOIs	https://doi.org/10.1016/j.matlet.2021.130812
State	Published - 15 Dec 2021

Keywords

Ab initio calculation
BaNiNbO
Composite-hydroxide-mediated method
Dilute magnetic semiconductors
Ferromagnetic

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10.1016/j.matlet.2021.130812

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@article{828b4b8b530845e6830911e05d56f92d,

title = "Room temperature short-range ferromagnetic order in Ni-doped tetragonal perovskite niobate",

abstract = "Here, we report a strong room-temperature magnetism in Ni-doped BaNbO3. The tetragonal BaNixNb(1-x)O3-δ nano-powders are prepared by the composite-hydroxide-mediated method. The as-prepared BaNixNb(1-x)O3-δ has a saturation magnetization (Msat) of 2.54 emu/g, a remnant magnetization (Mr) of 0.228 emu/g, and a small coercive field (Hc) of 99.14 Oe at room temperature, presenting as a short-range magnetic order. The Ni-doping leads to an incommensurate valence state of Nb, and the oxidation state of Ni in the matrix is + 2. It brings not only strong local spin polarization to the matrix, but also balances the oxygen defects and gives rise to a more doping content. The strong magnetism originated from the existence of short-range magnetic order and the strong local net spin polarization at the Fermi level (EF), which are proved by the first-principle calculations.",

keywords = "Ab initio calculation, BaNiNbO, Composite-hydroxide-mediated method, Dilute magnetic semiconductors, Ferromagnetic",

author = "Yi Zhou and Qing He and Fei Zhou and Yong Liu and Zhonghong Lai and Yudong Huang and Jingchuan Zhu",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = dec,

day = "15",

doi = "10.1016/j.matlet.2021.130812",

language = "英语",

volume = "305",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Room temperature short-range ferromagnetic order in Ni-doped tetragonal perovskite niobate

AU - Zhou, Yi

AU - He, Qing

AU - Zhou, Fei

AU - Liu, Yong

AU - Lai, Zhonghong

AU - Huang, Yudong

AU - Zhu, Jingchuan

PY - 2021/12/15

Y1 - 2021/12/15

N2 - Here, we report a strong room-temperature magnetism in Ni-doped BaNbO3. The tetragonal BaNixNb(1-x)O3-δ nano-powders are prepared by the composite-hydroxide-mediated method. The as-prepared BaNixNb(1-x)O3-δ has a saturation magnetization (Msat) of 2.54 emu/g, a remnant magnetization (Mr) of 0.228 emu/g, and a small coercive field (Hc) of 99.14 Oe at room temperature, presenting as a short-range magnetic order. The Ni-doping leads to an incommensurate valence state of Nb, and the oxidation state of Ni in the matrix is + 2. It brings not only strong local spin polarization to the matrix, but also balances the oxygen defects and gives rise to a more doping content. The strong magnetism originated from the existence of short-range magnetic order and the strong local net spin polarization at the Fermi level (EF), which are proved by the first-principle calculations.

AB - Here, we report a strong room-temperature magnetism in Ni-doped BaNbO3. The tetragonal BaNixNb(1-x)O3-δ nano-powders are prepared by the composite-hydroxide-mediated method. The as-prepared BaNixNb(1-x)O3-δ has a saturation magnetization (Msat) of 2.54 emu/g, a remnant magnetization (Mr) of 0.228 emu/g, and a small coercive field (Hc) of 99.14 Oe at room temperature, presenting as a short-range magnetic order. The Ni-doping leads to an incommensurate valence state of Nb, and the oxidation state of Ni in the matrix is + 2. It brings not only strong local spin polarization to the matrix, but also balances the oxygen defects and gives rise to a more doping content. The strong magnetism originated from the existence of short-range magnetic order and the strong local net spin polarization at the Fermi level (EF), which are proved by the first-principle calculations.

KW - Ab initio calculation

KW - BaNiNbO

KW - Composite-hydroxide-mediated method

KW - Dilute magnetic semiconductors

KW - Ferromagnetic

UR - https://www.scopus.com/pages/publications/85114292039

U2 - 10.1016/j.matlet.2021.130812

DO - 10.1016/j.matlet.2021.130812

M3 - 文章

AN - SCOPUS:85114292039

SN - 0167-577X

VL - 305

JO - Materials Letters

JF - Materials Letters

M1 - 130812

ER -

Room temperature short-range ferromagnetic order in Ni-doped tetragonal perovskite niobate

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Keywords

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