Improvements of the dielectric constant and ferromagnetic property of Co doped BiFeO3 nanotubes

Jing Wang; Meiya Li; Xiaolian Liu; Wenqiu Liu; Zhongqiang Hu; Shengxiang Wang

doi:10.1007/s10934-012-9647-1

Improvements of the dielectric constant and ferromagnetic property of Co doped BiFeO₃ nanotubes

Jing Wang
, Meiya Li
, Xiaolian Liu
, Wenqiu Liu
, Zhongqiang Hu
, Shengxiang Wang

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

8 Scopus citations

Abstract

Ordered BiFeO₃ (BFO) and BiFe_0.95Co _0.05O₃ (BFC) nanotubes arrays were successfully synthesized by a sol-gel anodic aluminum oxide template method. Both kinds of nanotubes had straight and smooth profiles with diameters of about 200 nm and wall thicknesses of about 20 nm. A perovskite-type structure of BFO was confirmed in these nanotubes by high-resolution transmission electron microscopy. The dielectric properties of these nanotube arrays were measured and larger permittivity was obtained for the BFC nanotubes via adopting a columnar composite structure model. Ferromagnetic measurement showed enhanced ferromagnetism for the sample with Co²⁺ doping. These improvements in dielectric constant and ferromagnetism of the nanotubes by Co²⁺ doping may be mainly attributed, respectively, to the lattice distortion and the breakage of the spin cycloid period of the BFC nanotubes.

Original language	English
Pages (from-to)	727-731
Number of pages	5
Journal	Journal of Porous Materials
Volume	20
Issue number	4
DOIs	https://doi.org/10.1007/s10934-012-9647-1
State	Published - Aug 2013
Externally published	Yes

Keywords

BiFeO
Co doping
Dielectric
Ferromagnetic
Nanotube arrays

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10.1007/s10934-012-9647-1

Cite this

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title = "Improvements of the dielectric constant and ferromagnetic property of Co doped BiFeO3 nanotubes",

abstract = "Ordered BiFeO3 (BFO) and BiFe0.95Co 0.05O3 (BFC) nanotubes arrays were successfully synthesized by a sol-gel anodic aluminum oxide template method. Both kinds of nanotubes had straight and smooth profiles with diameters of about 200 nm and wall thicknesses of about 20 nm. A perovskite-type structure of BFO was confirmed in these nanotubes by high-resolution transmission electron microscopy. The dielectric properties of these nanotube arrays were measured and larger permittivity was obtained for the BFC nanotubes via adopting a columnar composite structure model. Ferromagnetic measurement showed enhanced ferromagnetism for the sample with Co2+ doping. These improvements in dielectric constant and ferromagnetism of the nanotubes by Co2+ doping may be mainly attributed, respectively, to the lattice distortion and the breakage of the spin cycloid period of the BFC nanotubes.",

keywords = "BiFeO, Co doping, Dielectric, Ferromagnetic, Nanotube arrays",

author = "Jing Wang and Meiya Li and Xiaolian Liu and Wenqiu Liu and Zhongqiang Hu and Shengxiang Wang",

year = "2013",

month = aug,

doi = "10.1007/s10934-012-9647-1",

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volume = "20",

pages = "727--731",

journal = "Journal of Porous Materials",

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}

TY - JOUR

T1 - Improvements of the dielectric constant and ferromagnetic property of Co doped BiFeO3 nanotubes

AU - Wang, Jing

AU - Li, Meiya

AU - Liu, Xiaolian

AU - Liu, Wenqiu

AU - Hu, Zhongqiang

AU - Wang, Shengxiang

PY - 2013/8

Y1 - 2013/8

N2 - Ordered BiFeO3 (BFO) and BiFe0.95Co 0.05O3 (BFC) nanotubes arrays were successfully synthesized by a sol-gel anodic aluminum oxide template method. Both kinds of nanotubes had straight and smooth profiles with diameters of about 200 nm and wall thicknesses of about 20 nm. A perovskite-type structure of BFO was confirmed in these nanotubes by high-resolution transmission electron microscopy. The dielectric properties of these nanotube arrays were measured and larger permittivity was obtained for the BFC nanotubes via adopting a columnar composite structure model. Ferromagnetic measurement showed enhanced ferromagnetism for the sample with Co2+ doping. These improvements in dielectric constant and ferromagnetism of the nanotubes by Co2+ doping may be mainly attributed, respectively, to the lattice distortion and the breakage of the spin cycloid period of the BFC nanotubes.

AB - Ordered BiFeO3 (BFO) and BiFe0.95Co 0.05O3 (BFC) nanotubes arrays were successfully synthesized by a sol-gel anodic aluminum oxide template method. Both kinds of nanotubes had straight and smooth profiles with diameters of about 200 nm and wall thicknesses of about 20 nm. A perovskite-type structure of BFO was confirmed in these nanotubes by high-resolution transmission electron microscopy. The dielectric properties of these nanotube arrays were measured and larger permittivity was obtained for the BFC nanotubes via adopting a columnar composite structure model. Ferromagnetic measurement showed enhanced ferromagnetism for the sample with Co2+ doping. These improvements in dielectric constant and ferromagnetism of the nanotubes by Co2+ doping may be mainly attributed, respectively, to the lattice distortion and the breakage of the spin cycloid period of the BFC nanotubes.

KW - BiFeO

KW - Co doping

KW - Dielectric

KW - Ferromagnetic

KW - Nanotube arrays

UR - https://www.scopus.com/pages/publications/84879876260

U2 - 10.1007/s10934-012-9647-1

DO - 10.1007/s10934-012-9647-1

M3 - 文章

AN - SCOPUS:84879876260

SN - 1380-2224

VL - 20

SP - 727

EP - 731

JO - Journal of Porous Materials

JF - Journal of Porous Materials

IS - 4

ER -

Improvements of the dielectric constant and ferromagnetic property of Co doped BiFeO₃ nanotubes

Abstract

Keywords

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