Anisotropic magnetic property and exchange bias effect in a homogeneous Sillen-Aurivillius layered oxide

Zezhi Chen; Tao Hong; Zhenbin Wang; Jianlin Wang; Haoliang Huang; Ranran Peng; Wensheng Yan; Zhengping Fu; Kyle S. Brinkman; Yalin Lu

doi:10.1016/j.jeurceramsoc.2019.03.006

Anisotropic magnetic property and exchange bias effect in a homogeneous Sillen-Aurivillius layered oxide

Zezhi Chen, Tao Hong, Zhenbin Wang, Jianlin Wang, Haoliang Huang, Ranran Peng^*, Wensheng Yan, Zhengping Fu, Kyle S. Brinkman, Yalin Lu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

6 Citations (Scopus)

Abstract

A new Sillen-Aurivillius oxide Bi₇Fe₂Ti₂O₁₇Cl (BFTOCl), in which four perovskite layers are sandwiched by Sillen slabs, is designed and prepared by the solid-state reaction. Compared with pure Aurivilius structure, the Sillen slab requires one less positive charge for charge compensation due to the intercalation of Cl anions between two (Bi₂O₂)²⁺, which increases the concentration of magnetic Fe³⁺ ions in perovskite slab, and may depress the interaction of Fe³⁺ ions existing in neighboring perovskite slabs. This unique natural superlattice structure and the highly orientated texture of the ceramic result in a complex spin structure and an interesting magnetic anisotropy. The magnetism in in-plane direction (0.00487 emu/g at 100 K) is about 2.5 times larger than that in out-of-plane direction. Remarkably, exchange bias anisotropy has been observed in the BFTOCl ceramic, of which the exchange bias fields in in-plane and out-of-plane directions are 345 and 174 Oe at 100 K, respectively. © 2019 Elsevier Ltd.

Original language	English
Pages (from-to)	2685-2691
Journal	Journal of the European Ceramic Society
Volume	39
Issue number	8
Online published	4 Mar 2019
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2019.03.006
Publication status	Published - Jul 2019
Externally published	Yes

Funding

This work is supported by the National Key R&D Program of China (2016YFA0401004), the Chinese Universities Scientific Fund (CUSF, WK2310000055), Anhui Provincial Natural Science Foundation (P. R. China, No. 1608085QE91), and the External Cooperation Program of BIC (Chinese Academy of Sciences, No. 211134KYSB20130017). XAS and XMCD measurements were performed at the beamline BL12B-a in the National Synchrotron Radiation Laboratory (NSRL) in Hefei and the beamline 08U-a in the Shanghai Synchrotron Radiation Facility in Shanghai, P. R. China, respectively. We acknowledge the Supercomputing Center of University of Science and Technology of China (USTC) for providing computational resources.

Research Keywords

Exchange bias
Magnetic anisotropy
Oriented ceramic
Sillen-Aurivillius
Spin glass

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title = "Anisotropic magnetic property and exchange bias effect in a homogeneous Sillen-Aurivillius layered oxide",

abstract = "A new Sillen-Aurivillius oxide Bi7Fe2Ti2O17Cl (BFTOCl), in which four perovskite layers are sandwiched by Sillen slabs, is designed and prepared by the solid-state reaction. Compared with pure Aurivilius structure, the Sillen slab requires one less positive charge for charge compensation due to the intercalation of Cl anions between two (Bi2O2)2+, which increases the concentration of magnetic Fe3+ ions in perovskite slab, and may depress the interaction of Fe3+ ions existing in neighboring perovskite slabs. This unique natural superlattice structure and the highly orientated texture of the ceramic result in a complex spin structure and an interesting magnetic anisotropy. The magnetism in in-plane direction (0.00487 emu/g at 100 K) is about 2.5 times larger than that in out-of-plane direction. Remarkably, exchange bias anisotropy has been observed in the BFTOCl ceramic, of which the exchange bias fields in in-plane and out-of-plane directions are 345 and 174 Oe at 100 K, respectively. {\textcopyright} 2019 Elsevier Ltd.",

keywords = "Exchange bias, Magnetic anisotropy, Oriented ceramic, Sillen-Aurivillius, Spin glass",

author = "Zezhi Chen and Tao Hong and Zhenbin Wang and Jianlin Wang and Haoliang Huang and Ranran Peng and Wensheng Yan and Zhengping Fu and Brinkman, {Kyle S.} and Yalin Lu",

year = "2019",

month = jul,

doi = "10.1016/j.jeurceramsoc.2019.03.006",

language = "English",

volume = "39",

pages = "2685--2691",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

number = "8",

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TY - JOUR

T1 - Anisotropic magnetic property and exchange bias effect in a homogeneous Sillen-Aurivillius layered oxide

AU - Chen, Zezhi

AU - Hong, Tao

AU - Wang, Zhenbin

AU - Wang, Jianlin

AU - Huang, Haoliang

AU - Peng, Ranran

AU - Yan, Wensheng

AU - Fu, Zhengping

AU - Brinkman, Kyle S.

AU - Lu, Yalin

PY - 2019/7

Y1 - 2019/7

N2 - A new Sillen-Aurivillius oxide Bi7Fe2Ti2O17Cl (BFTOCl), in which four perovskite layers are sandwiched by Sillen slabs, is designed and prepared by the solid-state reaction. Compared with pure Aurivilius structure, the Sillen slab requires one less positive charge for charge compensation due to the intercalation of Cl anions between two (Bi2O2)2+, which increases the concentration of magnetic Fe3+ ions in perovskite slab, and may depress the interaction of Fe3+ ions existing in neighboring perovskite slabs. This unique natural superlattice structure and the highly orientated texture of the ceramic result in a complex spin structure and an interesting magnetic anisotropy. The magnetism in in-plane direction (0.00487 emu/g at 100 K) is about 2.5 times larger than that in out-of-plane direction. Remarkably, exchange bias anisotropy has been observed in the BFTOCl ceramic, of which the exchange bias fields in in-plane and out-of-plane directions are 345 and 174 Oe at 100 K, respectively. © 2019 Elsevier Ltd.

AB - A new Sillen-Aurivillius oxide Bi7Fe2Ti2O17Cl (BFTOCl), in which four perovskite layers are sandwiched by Sillen slabs, is designed and prepared by the solid-state reaction. Compared with pure Aurivilius structure, the Sillen slab requires one less positive charge for charge compensation due to the intercalation of Cl anions between two (Bi2O2)2+, which increases the concentration of magnetic Fe3+ ions in perovskite slab, and may depress the interaction of Fe3+ ions existing in neighboring perovskite slabs. This unique natural superlattice structure and the highly orientated texture of the ceramic result in a complex spin structure and an interesting magnetic anisotropy. The magnetism in in-plane direction (0.00487 emu/g at 100 K) is about 2.5 times larger than that in out-of-plane direction. Remarkably, exchange bias anisotropy has been observed in the BFTOCl ceramic, of which the exchange bias fields in in-plane and out-of-plane directions are 345 and 174 Oe at 100 K, respectively. © 2019 Elsevier Ltd.

KW - Exchange bias

KW - Magnetic anisotropy

KW - Oriented ceramic

KW - Sillen-Aurivillius

KW - Spin glass

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DO - 10.1016/j.jeurceramsoc.2019.03.006

M3 - RGC 21 - Publication in refereed journal

SN - 0955-2219

VL - 39

SP - 2685

EP - 2691

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 8

ER -

Anisotropic magnetic property and exchange bias effect in a homogeneous Sillen-Aurivillius layered oxide

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