Kim, Kyung-Ho Kim, Hyung-Jun Song, Jin Dong Koo, Hyun Cheol Chang, Joon-Yeon Han, Suk-Hee 2024-01-20T22:30:16Z 2024-01-20T22:30:16Z 2021-09-03 2008-12 0374-4884 https://pubs.kist.re.kr/handle/201004/132961 The morphology and the in-plane magnetic anisotropy changes in polycrystalline hexagonal-closed-packed (hcp) Co grown on a GaAs (001) substrate have been extensively investigated as a function of the growth temperature. Alternating-gradient magnetometry (AGM) measurements revealed a manifest change in the magnetic anisotropy from uniaxial to cubic as the growth temperature was increased from room temperature to 200 degrees C. The Co grown at room temperature shows that Co islands elongated along the [110] direction corresponding to the easy axis of the uniaxial magnetic anisotropy. The Co grown at 200 degrees C showed an isotropic morphology with cubic-magnetic anisotropy. The phase transition from a body-centered-cubic to a hexagonal-closed-packed phase was retarded at the higher growth temperatures. The experimental results indicate that the growth temperature is the key factor determining the morphology, as well as the magnetic anisotropy, of Co grown on GaAs (001) substrates. English KOREAN PHYSICAL SOC THIN-FILMS BCC CO GAAS(001) COBALT CO/GAAS(001) MICROSCOPY BEHAVIOR EPITAXY Influence of Growth Temperature on the Magnetic Anisotropy of Co Grown on GaAs (001) Substrates Article 10.3938/jkps.53.3352 1 JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.53, no.6, pp.3352 - 3355 JOURNAL OF THE KOREAN PHYSICAL SOCIETY 53 6 3352 3355 scie scopus kci ART001468215 000261731900042 2-s2.0-58249136010 Physics, Multidisciplinary Physics Article THIN-FILMS BCC CO GAAS(001) COBALT CO/GAAS(001) MICROSCOPY BEHAVIOR EPITAXY Cobalt Gallium arsenide Surface morphology M-H hysteresis