| Original Articles |
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Hall Effect of (Co0.34Fe0.66)0.42(SiO2)0.58 Granular Films |
| XU Qing-Yu;NI Gang;WANG Zhi-Ming;SANG Hai;DU You-Wei |
| National Laboratory of Solid State Microstructures,
Nanjing University, Nanjing 210093 and Centre
for Advanced Studies in Science and Technology of Microstructures, Nanjing 210093 |
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| Cite this article: |
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XU Qing-Yu, NI Gang, WANG Zhi-Ming et al 2001 Chin. Phys. Lett. 18 672-673 |
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Abstract The (Co0.34Fe0.66)0.42(SiO2)0.58 (volume fraction) granular films were fabricated by using magnetron sputtering technique, and a saturated Hall resistivity ρxys of about 29μΩ.cm was observed at room temperature, which was almost 3 orders of magnitude greater than that in the pure ferromagnetic sample. The measured linear dependence of resistivity ρxx vs log10T and magnetoresistance effect indicated that the Co0.34Fe0.66 volume fraction in the films were near percolation threshold. The giant Hall effect in (Co0.34Fe0.66)0.42(SiO2)0.58 granular film may originate from percolation phenomenon.
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| Keywords:
72.15.Gd
75.70.Pa
75.50.Tt
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Published: 01 May 2001
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| PACS: |
72.15.Gd
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(Galvanomagnetic and other magnetotransport effects)
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75.70.Pa
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75.50.Tt
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(Fine-particle systems; nanocrystalline materials)
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