Preparation and magnetic properties of barium hexaferrite nanorods

Journal Article · Tue Jun 03 04:00:00 EDT 2008 · Materials Research Bulletin

OSTI ID:21144013

Xifeng, Pan; Na, Chen; Keke, Gan; Mingyuan, Gu ^[1]

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1. State Key Laboratory of MMCs, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030 (China)

The barium hexaferrite nanorods were successfully prepared by sol-gel technique combined with polymethylmethacrylate as template. The crystal structure, morphology and magnetic properties of BaFe{sub 12}O{sub 19} with different shape were investigated with X-ray diffraction, field emission scanning electron microscope and vibrating sample magnetometry. The results show that diameters and lengths of magnetic nanorods are about 60 nm and 300 nm, respectively. The coercivity of rod-shaped BaFe{sub 12}O{sub 19} is increased to 5350 Oe, in comparison with 4800 Oe with plate-shape. The formation mechanism of BaFe{sub 12}O{sub 19} nanorods and reasons resulting in high coercivity are discussed.

• OSTI ID: 21144013
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 6 Vol. 43; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
COERCIVE FORCE
CRYSTAL STRUCTURE
FERRITES
MAGNETIC PROPERTIES
MORPHOLOGY
NANOSTRUCTURES
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
X-RAY DIFFRACTION