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ROOM-TEMPERATURE FERROMAGNETISM IN 2 NANOFIBERS AND NANOTUBES PREPARED BY ELECTROSPINNING.

Authors :
ZHAO, JIAN-GUO
ZHANG, WEI-YING
XIE, ER-QING
AN, XIU-YUN
FU, JIE-CAI
LIU, ZHAO-JUN
LIU, ZHONG-LI
ZHANG, YA-JUAN
CHEN, YONG-FENG
ZHANG, CHANG-YOU
Source :
NANO; Feb2014, Vol. 9 Issue 2, p-1, 7p
Publication Year :
2014

Abstract

<subscript>2</subscript> nanofibers and nanotubes were synthesized by electrospinning method. Magnetization measurement indicates that the <subscript>2</subscript> nanofibers and nanotubes annealed in air at 500°C exhibit the room-temperature ferromagnetism and the ferromagnetism of nanotubes is stronger than the nanofibers. Selected area electron diffraction, X-ray diffraction and Raman measurements show that all the samples possess a typical rutile structure and no other impurity phases are observed. The results of the Raman spectra also indicate that there are lots of defects existing in the fabricated samples. The observed room-temperature ferromagnetism in <subscript>2</subscript> nanofibers and nanotubes possibly originates from oxygen vacancies. The field cooled (FC) and zero-field-cooled (ZFC) magnetization curves indicate that the Curie temperature T<subscript>C</subscript> is above 300 K. SnO<subscript>2</subscript> nanofibers and nanotubes were synthesized the electrospinning method. The observed room-temperature ferromagnetism originates from surface defects. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
17932920
Volume :
9
Issue :
2
Database :
Complementary Index
Journal :
NANO
Publication Type :
Academic Journal
Accession number :
95394007
Full Text :
https://doi.org/10.1142/S179329201450026X