Magnetic properties of sputtered strontium ferrite films prepared from sintered target with Fe/Sr composition ratio of 8–14

1999 ◽  
Vol 85 (8) ◽  
pp. 4732-4734 ◽  
Author(s):  
A. Morisako ◽  
M. Saitoh ◽  
M. Matsumoto
Keyword(s):  
Magnetic Properties ◽  
Strontium Ferrite ◽  
Composition Ratio ◽  
Ferrite Films

The magnetic properties and microstructure of strontium ferrite films with perpendicular and in-plane magnetic anisotropy

1997 ◽  
Vol 33 (5) ◽  
pp. 3640-3642 ◽  
Author(s):  
B. Ramamurthy Acharya ◽  
S. Prasad ◽  
N. Venkataramani ◽  
E.N. Ebarra ◽  
T. Suzuki
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Strontium Ferrite ◽  
Ferrite Films

Preparation and Magnetic Properties of Ce-Doped Strontium Ferrite Films

2011 ◽  
Vol 239-242 ◽  
pp. 481-485
Author(s):  
Yu Qing Li ◽  
Ying Huang ◽  
Shu Hua Qi ◽  
Lei Niu ◽  
Fang Fang Niu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Saturation Magnetization ◽  
Sol Gel ◽  
Strontium Ferrite ◽  
Electromagnetic Properties ◽  
High Coercivity ◽  
Nanocrystalline Films ◽  
X Ray Diffraction ◽  
Ferrite Films ◽  
La Doped

We have found that La substitutions can improve the magnetic properties of the strontium ferrite films without reducing the saturation magnetization. In this work, SrCexFe12-xO19nanocrystalline films (x=0, 0.2…0.8) with high coercivity were synthesized and deposited on SiO2substrate by sol-gel method and sintering at 900 OC for 2h. The films were characterized by various experimental techniques including X-ray diffraction analysis (XRD), Field Emission Scanning Electron Microscope (FESEM), Vibrating Sample Magnetometry (VSM) and vector network analyzer. The results show that with the increasing content of cerium the coercivity of the films improves greatly and reach the maximum 6678.78 Oe at x=0.2, which is larger than La-doped strontium ferrite films, however the saturation magnetization decreases a lot. In the frequency range of 11.5-12 GHz the electromagnetic properties of the Ce-doped strontium ferrite films are better than La-doped at x=0.2.

The Structure and Magnetic Properties of NiZn-Ferrite Films Deposited by Magnetron Sputtering at Room Temperature

2013 ◽  
Vol 690-693 ◽  
pp. 1702-1706 ◽  
Author(s):  
Shuang Jun Nie ◽  
Hao Geng ◽  
Jun Bao Wang ◽  
Lai Sen Wang ◽  
Zhen Wei Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Magnetron Sputtering ◽  
Saturation Magnetization ◽  
Room Temperature ◽  
Oxygen Flow ◽  
Flow Ratio ◽  
Study Results ◽  
Ferrite Thin Films ◽  
Ferrite Films

NiZn-ferrite thin films were deposited onto silicon and glass substrates by radio frequency magnetron sputtering at room temperature. The effects of the relative oxygen flow ratio on the structure and magnetic properties of the thin films were investigated. The study results reveal that the films deposited under higher relative oxygen flow ratio show a better crystallinity. Static magnetic measurement results indicated that the saturation magnetization of the films was greatly affected by the crystallinity, grain dimension, and cation distribution in the NiZn-ferrite films. The NiZn-ferrite thin films with a maximum saturation magnetization of 151 emucm-3, which is about 40% of the bulk NiZn ferrite, was obtained under relative oxygen flow ratio of 60%.

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