| Autor: |
Rahul C. Kambale, C.J. Won, Kunik Lee, N. Hur, K.M. Song |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Journal of Crystal Growth. 340:171-174 |
| ISSN: |
0022-0248 |
| Popis: |
We studied the effect of Dy 3+ content on the magnetic properties of cobalt ferrite single crystal. The single crystals of CoFe 1.9 Dy 0.1 O 4 were grown by the flux method using Na 2 B 4 O 7 .10 H 2 O (Borax) as a solvent (flux). The black and shiny single crystals were obtained as a product. The X-ray diffraction analysis at room temperature confirmed the spinel cubic structure with lattice constant a =8.42 A of the single crystals. The compositional analysis endorses the presence of constituents Co, Fe and Dy elements after sintering at 1300 °C within the final structure. The magnetic hysteresis measurements at various temperatures viz. 10 K, 100 K, 200 K and 300 K reveal the soft ferrimagnetic nature of the single crystal than that of for pure CoFe 2 O 4 . The observed saturation magnetization ( M s ) and coercivity ( H c ) are found to be lower than that of pure CoFe 2 O 4 single crystal. The magnetostriction ( λ ) measurement was carried out along the [001] direction. The magnetic measurements lead to conclude that the present single crystals can be used for magneto-optic recording media. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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