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Growth of highly textured barium ferrite thin films on sapphire and their magnetic properties
- Source :
-
Thin Solid Films . Dec2012, Vol. 526, p237-240. 4p. - Publication Year :
- 2012
-
Abstract
- Abstract: Barium ferrite thin films were spin-coated on sapphire (00l) faces. Ethylene-diamine-tetra-acetic acid (EDTA) was used to chelate metal ions. The conditions to obtain highly textured films were expanded by using EDTA, where the pH values of the solutions varied from 3 up to 9 and the molar ratio of EDTA to metal ions changed from 1.0 up to 1.5. The grains showed that the c-axis aligned normal to the film plane and the [110] direction of sapphire was parallel to the [100] direction of the film. The film showed uniaxial magnetic anisotropy with the coercivity field of 21.5kA/m along the out-of-plane direction and very small hysteresis in the in-plane direction. The coercivity was likely to be controlled by wall nucleation according to the shape of the curves of the coercivity forces versus the maximum applied field. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00406090
- Volume :
- 526
- Database :
- Academic Search Index
- Journal :
- Thin Solid Films
- Publication Type :
- Academic Journal
- Accession number :
- 84763539
- Full Text :
- https://doi.org/10.1016/j.tsf.2012.11.002