Magnetic properties of sputtered anisotropic Pr-Fe-B thin films with different structures and antiferromagnetic materials

• Published in: Rare metals 2016-12, Vol.35 (12), p.926-929
• Main Authors: Yang, Fang, Liu, Wei, Zhang, Zhi-Dong
• Format: Article
• Language: English
• Subjects: Anisotropy; Antiferromagnetism; Biomaterials; Chemistry and Materials Science; Coercivity; Electrons; Energy; Ferromagnetic materials; Iron; Magnetic films; Magnetic properties; Magnetron sputtering; Materials Engineering; Materials Science; Metallic Materials; Molybdenum; Nanocomposites; Nanoscale Science and Technology; Physical Chemistry; Remanence; Silicon substrates; Si（100）; SQUIDs; Superconducting quantum interference devices; Thickness; Thin films; X-ray diffraction; 反铁磁材料; 各向异性; 直流磁控溅射法; 磁性能; 磁性薄膜; 解结构; 超导量子干涉仪
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-014-0420-2

Anisotropic Pr-Fe-B films with soft-magnetic layer （Fe） and/or antiferromagnetic layer （Mn, FeMn or MnO） were prepared by direct-current （DC） magnetron sputtering on Si （100） substrates heated at 650℃. The influence of four types＇ different structures on the magnetic properties of Pr-Fe-B films was investigated. The phase and magnetic properties were characterized by means of X-ray diffraction （XRD） and superconducting quantum interference device （SQUID）. Addition of anti-ferromagnetic layer enhances both the coercivity and the remanence ratios of Pr-Fe-B films with suitable structures. The interface number increases and the antiferromagnetic-ferromagnetic exchange interaction is likely to become stronger, which affect the improvement of magnetic properties. To further understand the influence of structures with soft-magnetic Fe layer and/or antifer- romagnetic FeMn layer on the magnetic properties of Pr-Fe-B hard-magnetic films, the thickness of Pr-Fe-B layer was designed to decrease from 600 to 50 nm. The improvement of magnetic properties becomes obvious in Mo（50 nm）/Pr-Fe-B（25 nm）Mo（2 nm）FeMn（20 nm）Mo （2 nm）Pr-Fe-B（25 nm）/Mo（50 rim） film.