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GdFe<SUB>12</SUB> 박막의 증착온도에 따른 자기적 특성 변화
조대길(Daegill Cho),류상균(Sangkyun Ryu),진형진(Hyoungjeen Jeen) 한국자기학회 2020 韓國磁氣學會誌 Vol.30 No.6
Alloys of rare earth metal and transition metal with ThMn<SUB>12</SUB> structure are expected to have high saturation magnetization and high magnetic anisotropy. Despite its advantages, it has not been commercialized because of its metastability. GdFe<SUB>12</SUB> is a material having ThMn<SUB>12</SUB> structure. Therefore, it is expected to be difficult to stabilize GdFe<SUB>12</SUB> in bulk form. In this study, GdFe<SUB>12</SUB> was fabricated in the form of epitaxial thin films to stabilize the phase. The films were grown epitaxially from 500 ℃ to 200 ℃. From the results of x-ray diffraction and x-ray absorption, it was confirmed that a (330) GdFe<SUB>12</SUB> thin films were grown. The epitaxial GdFe<SUB>12</SUB> thin film had a saturation magnetization (M<SUB>s</SUB>) = 1130 emu/㎤ and coercivity = 712 Oe at a deposition temperature of 400 ℃.