Chun, DongWon Kim, SungMan Kim, GyeungHo Jeung, WonYoung 2024-01-20T19:04:40Z 2024-01-20T19:04:40Z 2021-09-02 2010-06 0018-9464 https://pubs.kist.re.kr/handle/201004/131419 An attempt is made in this study to employ vanadium containing chromium (CrV) alloy underlayer to control the microstructure and ultimately to facilitate the in-situ ordering of Fe-Pt thin film. CrV alloys with V contents ranging from 0 to 15 at% were investigated to evaluate their effects on the magnetic properties and structural modification of FePt thin film. Addition of V in Cr underlayer results in the formation of FePt L1(0) phase with (001) preferred orientation. Analysis of XRD and HR-TEM results reveals that the lattice expansion of Cr underlayer induced by V addition increases the lattice misfit strain between CrV underlayer and FePt magnetic layer. Consequently well aligned FePt (001) grains and in-situ ordering of FePt L1(0) thin film can be obtained. Magnetic property measurements show that FePt/Pt/5.8 at.% V-Cr multilayer has the maximum out-of-plane coercivity (4000 Oe) and squareness (0.95). Due to in-situ ordering, good perpendicular magnetic properties with higher coercivity and squareness were achieved from FePt/Pt/Cr94.2V5.8 multi-layers at the processing temperature of 350 degrees C without further annealing treatment. English IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC LAYER The Effects of CrV Underlayer on the Structure and Magnetic Properties of FePt Thin Film Article 10.1109/TMAG.2009.2039553 1 IEEE TRANSACTIONS ON MAGNETICS, v.46, no.6, pp.1856 - 1858 IEEE TRANSACTIONS ON MAGNETICS 46 6 1856 1858 scie scopus 000278037800151 2-s2.0-77952824791 Engineering, Electrical & Electronic Physics, Applied Engineering Physics Article LAYER CrV underlayer FePt film in-situ ordering perpendicular magnetic recording media