Room temperature ferromagnetism in ZnO/SnO2 nanotubes by electrospinning

Jianguo Zhao; Mao Yang; Weiying Zhang; Erqing Xie; Xiuyun An; Jiecai Fu; Zhongli Liu

doi:10.1166/sam.2014.1848

Room temperature ferromagnetism in ZnO/SnO₂ nanotubes by electrospinning

Jianguo Zhao^*
, Mao Yang
, Weiying Zhang
, Erqing Xie
, Xiuyun An
, Jiecai Fu
, Zhongli Liu

^*Corresponding author for this work

Luoyang Normal University
Lanzhou University

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

2 Scopus citations

Abstract

ZnO/SnO₂ nanotubes are prepared by electrospinning method with postannealing in air at 500 °C. Field emission scanning electron microscopy (FE-SEM) reveals the formation of porous ZnO/SnO₂ nanotubes. The X-ray diffraction (XRD) and Raman spectrum results show that the ZnO/SnO₂ nanotubes have mixed of wurtzite (ZnO) and rutile (SnO2) structure. High-resolution transmission electron microscopy (HRTEM) results also assist the products polycrystalline nature with an average outer diameter of ̃300 nm, a wall thickness of ̃20 nm. The magnetic properties of ZnO/SnO₂ nanotubes are studied using a superconductor quantum interference device (SQUID) magnetometer, and revealing the room-temperature ferromagnetism. The ferromagnetic origin has been ascribed to intrinsic defects. The coercivity and saturation magnetization of ZnO/SnO₂ nanotubes at 5 K are estimated to be 191 Oe, 0.148 emu/g and higher than at 300 K. Such a ferromagnet without the presence of any transition metal could be a very good option for a class of spintronics.

Original language	English
Pages (from-to)	985-989
Number of pages	5
Journal	Science of Advanced Materials
Volume	6
Issue number	5
DOIs	https://doi.org/10.1166/sam.2014.1848
State	Published - 2014
Externally published	Yes

Keywords

Interface
Nanotubes
Room temperature ferromagnetism

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10.1166/sam.2014.1848

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title = "Room temperature ferromagnetism in ZnO/SnO2 nanotubes by electrospinning",

abstract = "ZnO/SnO2 nanotubes are prepared by electrospinning method with postannealing in air at 500 °C. Field emission scanning electron microscopy (FE-SEM) reveals the formation of porous ZnO/SnO2 nanotubes. The X-ray diffraction (XRD) and Raman spectrum results show that the ZnO/SnO2 nanotubes have mixed of wurtzite (ZnO) and rutile (SnO2) structure. High-resolution transmission electron microscopy (HRTEM) results also assist the products polycrystalline nature with an average outer diameter of{\~ }300 nm, a wall thickness of{\~ }20 nm. The magnetic properties of ZnO/SnO2 nanotubes are studied using a superconductor quantum interference device (SQUID) magnetometer, and revealing the room-temperature ferromagnetism. The ferromagnetic origin has been ascribed to intrinsic defects. The coercivity and saturation magnetization of ZnO/SnO2 nanotubes at 5 K are estimated to be 191 Oe, 0.148 emu/g and higher than at 300 K. Such a ferromagnet without the presence of any transition metal could be a very good option for a class of spintronics.",

keywords = "Interface, Nanotubes, Room temperature ferromagnetism",

author = "Jianguo Zhao and Mao Yang and Weiying Zhang and Erqing Xie and Xiuyun An and Jiecai Fu and Zhongli Liu",

year = "2014",

doi = "10.1166/sam.2014.1848",

language = "英语",

volume = "6",

pages = "985--989",

journal = "Science of Advanced Materials",

issn = "1947-2935",

publisher = "American Scientific Publishers",

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TY - JOUR

T1 - Room temperature ferromagnetism in ZnO/SnO2 nanotubes by electrospinning

AU - Zhao, Jianguo

AU - Yang, Mao

AU - Zhang, Weiying

AU - Xie, Erqing

AU - An, Xiuyun

AU - Fu, Jiecai

AU - Liu, Zhongli

PY - 2014

Y1 - 2014

N2 - ZnO/SnO2 nanotubes are prepared by electrospinning method with postannealing in air at 500 °C. Field emission scanning electron microscopy (FE-SEM) reveals the formation of porous ZnO/SnO2 nanotubes. The X-ray diffraction (XRD) and Raman spectrum results show that the ZnO/SnO2 nanotubes have mixed of wurtzite (ZnO) and rutile (SnO2) structure. High-resolution transmission electron microscopy (HRTEM) results also assist the products polycrystalline nature with an average outer diameter of ̃300 nm, a wall thickness of ̃20 nm. The magnetic properties of ZnO/SnO2 nanotubes are studied using a superconductor quantum interference device (SQUID) magnetometer, and revealing the room-temperature ferromagnetism. The ferromagnetic origin has been ascribed to intrinsic defects. The coercivity and saturation magnetization of ZnO/SnO2 nanotubes at 5 K are estimated to be 191 Oe, 0.148 emu/g and higher than at 300 K. Such a ferromagnet without the presence of any transition metal could be a very good option for a class of spintronics.

AB - ZnO/SnO2 nanotubes are prepared by electrospinning method with postannealing in air at 500 °C. Field emission scanning electron microscopy (FE-SEM) reveals the formation of porous ZnO/SnO2 nanotubes. The X-ray diffraction (XRD) and Raman spectrum results show that the ZnO/SnO2 nanotubes have mixed of wurtzite (ZnO) and rutile (SnO2) structure. High-resolution transmission electron microscopy (HRTEM) results also assist the products polycrystalline nature with an average outer diameter of ̃300 nm, a wall thickness of ̃20 nm. The magnetic properties of ZnO/SnO2 nanotubes are studied using a superconductor quantum interference device (SQUID) magnetometer, and revealing the room-temperature ferromagnetism. The ferromagnetic origin has been ascribed to intrinsic defects. The coercivity and saturation magnetization of ZnO/SnO2 nanotubes at 5 K are estimated to be 191 Oe, 0.148 emu/g and higher than at 300 K. Such a ferromagnet without the presence of any transition metal could be a very good option for a class of spintronics.

KW - Interface

KW - Nanotubes

KW - Room temperature ferromagnetism

UR - https://www.scopus.com/pages/publications/84902354628

U2 - 10.1166/sam.2014.1848

DO - 10.1166/sam.2014.1848

M3 - 文章

AN - SCOPUS:84902354628

SN - 1947-2935

VL - 6

SP - 985

EP - 989

JO - Science of Advanced Materials

JF - Science of Advanced Materials

IS - 5

ER -

Room temperature ferromagnetism in ZnO/SnO₂ nanotubes by electrospinning

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Keywords

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