Effect of Co2+ion on the magnetic properties of sol–gel cobalt ferrite thin films

2004 ◽  
Vol 14 (22) ◽  
pp. 3328-3332 ◽  
Author(s):  
Nimai Ch. Pramanik ◽  
Tatsuo Fujii ◽  
Makoto Nakanishi ◽  
Jun Takada
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Cobalt Ferrite ◽  
Sol Gel ◽  
Ferrite Thin Films

Magnetic properties of NiCuZn ferrite thin films prepared by the sol-gel method

2007 ◽  
Vol 22 (3) ◽  
pp. 506-509 ◽  
Author(s):  
Feng Liu ◽  
Tianling Ren ◽  
Chen Yang ◽  
Litian Liu ◽  
Jun Yu
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Nicuzn Ferrite ◽  
Ferrite Thin Films

MAGNETIC PROPERTIES OF Co-FERRITE AND SiO2-DOPED Co-FERRITE THIN FILMS AND POWDERS BY SOL–GEL

2004 ◽  
Vol 03 (04n05) ◽  
pp. 463-470
Author(s):  
Y. C. WANG ◽  
J. DING ◽  
B. H. LIU ◽  
Y. SHI
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Sol Gel ◽  
Vibrating Sample Magnetometer ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Structural And Magnetic Properties ◽  
Ferrite Thin Films ◽  
Scanning Electron

Thin films and powders of Co -ferrite and SiO 2-doped Co -ferrite were fabricated via the sol–gel method. The structural and magnetic properties of the films and powders were investigated with X-Ray Diffractometer (XRD), Vibrating Sample Magnetometer (VSM), Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). VSM measurements showed an enhancement of coercivity by SiO 2-doping for Co -ferrite powders and thin films (coercivity of 3.5 kOe in SiO 2-doped thin films). XRD and SEM investigations revealed a nanostructure of the thin films. Low surface roughness was observed in our AFM study.

Magnetic Properties of Barium Ferrite Thin Films on Pt(111) by a Sol-Gel Method

2002 ◽  
Vol 189 (3) ◽  
pp. 903-906 ◽  
Author(s):  
Chul Sung Kim ◽  
Sang Won Lee ◽  
Sung Yong An ◽  
In-Bo Shim
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Barium Ferrite ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ferrite Thin Films

Structural and Magnetic Properties of CoFe2O4 / Si (001) Thin Films via Sol-Gel Method

2013 ◽  
Vol 744 ◽  
pp. 315-318
Author(s):  
Wei Rao ◽  
Ding Guo Li ◽  
Hong Chun Yan
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Exchange Coupling ◽  
Cobalt Ferrite ◽  
Sol Gel ◽  
Magnetic Hysteresis ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Calcined Temperature

Cobalt ferrite (CoFe2O4) thin films have been prepared on Si (001) substrates, with different calcined temperatures (Tcal=400°C~800°C). The films structure was studied by X-ray diffraction (XRD) and their surface was examined by scanning electron microscopy (SEM). The magnetic properties were measured with a vibrating sample magnetometer (VSM). For low calcined temperatures, the films presented a mixture of a CoFe2O4phase, with the cubic spinel structure, and cobalt and iron antiferromagnet oxides with CoO and FeO stoichiometries. As the calcined temperature increased, the CoO and FeO relative content strongly decreased, so that for Tcal=800°Cthe films were composed mainly by polycrystalline CoFe2O4. The magnetic hysteresis cycles measured in the films were horizontally shifted due to an exchange coupling field originated by the presence of the antiferromagnetic phases.

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