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FePt granular films were prepared by direct current facing-target magnetron sputtering system onto glass substrates and subsequently in-situ annealed in vacuum. Vibrating sample magnetometer, X-ray diffraction and scanning probe microscope were applied to study the magnetic properties, microstructures, morphologies and domain structures of the samples. (FePt)27 Ti73 bilayer films were fabricated at various conditions to investigate the effect of Ti on FePt grains. The results show that without Ti matrix layer, FePt films deposited onto the glass substrates are fcc disordered; with addition of Ti matrix layer, FePt/Ti films form a ternary (FePt)27 Ti73 alloy possessing fcc and L10 (111) mixed texture. FePt/(FePt)27Ti73 films with perfectly ordered L10 (111) structure and unique magnetic properties can be obtained at Ti thickness of 35 nm and substrate temperature of 250℃. The maximum coercivity is more than 240 kA/m and the squareness ratio is more than 0.9. The obtained results suggest that the granular FePt/(FePt)27 Ti73 films can be applicable to ultrahigh-density magnetic recording media. 相似文献