Annealing temperature dependence of ferromagnetism in Co-doped TiO2 nanofibres

被引：4

作者：

Jia, C. W. ^{[1
]}

Xie, E. Q. ^{[1
]}

Zhao, J. G. ^{[1
]}

Duan, H. G. ^{[1
]}

Zhang, Y. Z. ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2007年 / 140卷 / 1-2期

关键词：

cobalt; titanium dioxide; fibers; ANATASE TIO2; LUMINESCENCE; TRANSITION; FILMS;

D O I：

10.1016/j.mseb.2007.01.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Co-doped TiO2 nanofibres with an average diameter of similar to 70 nm were fabricated by electrospinning. The samples were annealed at different temperatures in air and SEM, XRD, VSM, PL were employed to characterize the samples. XRD measurements showed that the nanofibres present anatase and rutile phase at annealing temperature of 420 and 800 degrees C, respectively. It is found that the ferromagnetic moment of Co-doped TiO2 nanofibres decrease with increasing of annealing temperature. In addition, photoluminescence is different from that of pure TiO2 and the emission due to oxygen vacancies decrease with increasing of annealing temperature, indicating that oxygen vacancies may play an important role for ferromagnetism and F-center-mediated interaction between Co spins may be responsible for the creation of ferromagnetism in Co-doped TiO2 nanofibres. (C) 2007 Published by Elsevier B.V.

引用

页码：10 / 14

页数：5

共 50 条

[1] On the room temperature ferromagnetism in Co-doped TiO2 films
Punnoose, A
Seehra, MS
Park, WK
Moodera, JS
JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) : 7867 - 7869
[2] Ferromagnetism in Co-doped TiO2 single crystals
Yamaki, K.
Shimizu, N.
Kita, E.
Mochiku, T.
Fujii, H.
Yamada, K.
Itoh, S.
Kadowaki, K.
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 12, 2006, 3 (12): : 4127 - 4130
[3] Ferromagnetism of co-doped TiO2(B) nanotubes
Wang, X. W.
Gao, X. P.
Li, G. R.
Gao, L.
Yan, T. Y.
Zhu, H. Y.
APPLIED PHYSICS LETTERS, 2007, 91 (14)
[4] Enhanced ferromagnetism in Co-doped TiO2 powders
Cho, JH
Kim, BY
Kim, HD
Woo, SI
Moon, SH
Kim, JP
Cho, CR
Joh, YG
Kim, EC
Kim, DH
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2004, 241 (07): : 1537 - 1540
[5] Room-temperature ferromagnetism in Co and Nb co-doped TiO2 nanoparticles
Achisu, M. H.
Mori, K.
Yodo, K. H.
Morimoto, S.
Yamazaki, T.
Ichiyanagi, Y.
IRAGO CONFERENCE 2014, 2015, 1649 : 20 - 26
[6] Dose dependence of magnetism in co-doped TiO2
Akdogan, N.
Nefedov, A.
Westphalen, A.
Zabel, H.
Khaibullin, R. I.
Tagirov, L. R.
SUPERLATTICES AND MICROSTRUCTURES, 2007, 41 (2-3) : 132 - 137
[7] The dopant concentration and annealing temperature dependence of ferromagnetism in Co-doped ZnO thin films
Xu, Xiao-Hong
Qin, Xiu-Fang
Jiang, Feng-Xian
Li, Xiao-Li
Chen, Ya
Gehring, G. A.
APPLIED SURFACE SCIENCE, 2008, 254 (16) : 4956 - 4960
[8] Ferromagnetism in Co-doped TiO2 anatase due to the cobalt clustering
Zhou, XH
Chen, XS
Sun, LZ
Sun, YL
Lu, W
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2005, 19 (15-17): : 2520 - 2525
[9] Room-Temperature Ferromagnetism in Co-doped SrTiO3 Nanofibres
Zhang, Wei
Li, Heping
Pan, Wei
HIGH-PERFORMANCE CERAMICS VII, PTS 1 AND 2, 2012, 512-515 : 1438 - 1441
[10] ABSENCE OF ROOM TEMPERATURE FERROMAGNETISM IN Co AND Cr CO-DOPED TiO2 BASED DILUTE MAGNETIC SEMICONDUCTORS
Waseem, S.
Anjum, S.
Mustafa, L.
Zeeshan, T.
Zia, R.
Mohsin, N.
DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 2016, 11 (02) : 411 - 418

← 1 2 3 4 5 →