Kim, Hyunsu Noh, Jin-Seo Roh, Jong Wook Chun, Dong Won Kim, Sungman Jung, Sang Hyun Kang, Ho Kwan Jeong, Won Yong Lee, Wooyoung 2024-01-20T18:01:12Z 2024-01-20T18:01:12Z 2021-09-04 2011-01 1931-7573 https://pubs.kist.re.kr/handle/201004/130768 A thin FePt film was deposited onto a CrV seed layer at 400 degrees C and showed a high coercivity (similar to 3,400 Oe) and high magnetization (900-1,000 emu/cm(3)) characteristic of L1(0) phase. However, the magnetic properties of patterned media fabricated from the film stack were degraded due to the Ar-ion bombardment. We employed a depositionlast process, in which FePt film deposited at room temperature underwent lift-off and post-annealing processes, to avoid the exposure of FePt to Ar plasma. A patterned medium with 100-nm nano-columns showed an out-of-plane coercivity fivefold larger than its in-plane counterpart and a remanent magnetization comparable to saturation magnetization in the out-of-plane direction, indicating a high perpendicular anisotropy. These results demonstrate the high perpendicular anisotropy in FePt patterned media using a Cr-based compound seed layer for the first time and suggest that ultra-high-density magnetic recording media can be achieved using this optimized top-down approach. English SPRINGER Perpendicular Magnetic Anisotropy in FePt Patterned Media Employing a CrV Seed Layer Article 10.1007/s11671-010-9755-2 1 NANOSCALE RESEARCH LETTERS, v.6 NANOSCALE RESEARCH LETTERS 6 N scie scopus 000289104200013 2-s2.0-79952696076 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article THIN-FILMS UNDERLAYER TEMPERATURE IRRADIATION COERCIVITY CrV underlayer E-beam lithography FePt Patterned media