CAJ | 학술논문

在室温下,应用对靶直流磁控溅射设备在普通玻璃基片上制备了FePt(30nm)/Ti(tnm)颗粒膜样品,随后,在真空中进行了原位退火.详细研究了Ti衬底层对FePt颗粒膜的微结构和磁特性的影响.X射线衍射图谱表明样品形成了较有序的L10织构,Ti和FePt形成了三元FePtTi合金.当Ti层厚度t=5 nm、退火温度Ta=500℃时,样品具有高度有序的L10织构、小的颗粒尺寸和优异的磁特性.矫顽力超过了6.7 kOe,饱和磁化强度为620emu/cc.并且具有较小的开关场分布.结果表明FePt/Ti颗粒膜系统可作为超高密度磁记录介质的候选者.
재실온하,응용대파직류자공천사설비재보통파리기편상제비료FePt(30nm)/Ti(tnm)과립막양품,수후,재진공중진행료원위퇴화.상세연구료Ti츤저층대FePt과립막적미결구화자특성적영향.X사선연사도보표명양품형성료교유서적L10직구,Ti화FePt형성료삼원FePtTi합금.당Ti층후도t=5 nm、퇴화온도Ta=500℃시,양품구유고도유서적L10직구、소적과립척촌화우이적자특성.교완력초과료6.7 kOe,포화자화강도위620emu/cc.병차구유교소적개관장분포.결과표명FePt/Ti과립막계통가작위초고밀도자기록개질적후선자.
FePt (30 nm)/Ti (t nm)granular films were prepared by DC facing-target magnetron sputtering system onto glass substrates at room temperature and subsequently in situ annealed in vacuum. The influence of Ti on microstructural and magnetic properties of the FePt films was investigated in detail. X-ray diffraction (XRD) patterns indicate that the films deposited onto glass substrates with the addition of Ti layer form a ternary FePtTi alloy possessing L10 texture. The film with perfectly ordered L10 structure was obtained at t = 5 nm and Ta = 500 ℃, which had ultra-small grain size and unique magnetic properties. The maximum coercivity and saturation magnetization reached more than 6.7×7.96×104A.m-1 and 620emu/cc,respectively. The small switching field distribution (SFD) was obtained. The results showed that this system might be applicable to ultra-high-density magnetic recording media.