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
Hall Effect of (Co0.34Fe0.66)0.42(SiO2)0.58 Granular Films
National Laboratory of Solid State Microstructures,
Nanjing University, Nanjing 210093 and Centre
for Advanced Studies in Science and Technology of Microstructures, Nanjing 210093
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.
XU Qing-Yu;NI Gang;WANG Zhi-Ming;SANG Hai;DU You-Wei. Hall Effect of (Co0.34Fe0.66)0.42(SiO2)0.58 Granular Films[J]. 中国物理快报, 2001, 18(5): 672-673.
XU Qing-Yu, NI Gang, WANG Zhi-Ming, SANG Hai, DU You-Wei. Hall Effect of (Co0.34Fe0.66)0.42(SiO2)0.58 Granular Films. Chin. Phys. Lett., 2001, 18(5): 672-673.
2001, Vol. 18 
