Lee, WY Shin, KH Choi, BC Bland, JAC 2024-01-21T12:02:39Z 2024-01-21T12:02:39Z 2022-01-11 2001-08 0374-4884 https://pubs.kist.re.kr/handle/201004/140249 The magnetization reversal dynamics in permalloy dots (20 similar to 400 mum diameter) has been investigated as a function of the applied field amplitude H-0 and frequency Omega using scanning Kerr microscopy. An increase in the dynamic coercivity with reduced size is observed for d < 100 mum in the frequency range up to 800 Hz. The loop area A follows the scaling relation A proportional to H(0)(alpha)Omega (beta), with alpha approximate to 0.14 and beta approximate to 0.50 throughout the entire size range studied. These results demonstrate that the dynamic scaling behavior is universal even though the lateral size influences the domain structure and magnetic reversal behavior. English KOREAN PHYSICAL SOC HYSTERESIS DYNAMICS CO FILMS SPIN NUCLEATION ANISOTROPY MODEL Magnetization reversal dynamics in mesoscopic Ni80Fe20 dots Article 1 JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.39, no.2, pp.350 - 354 JOURNAL OF THE KOREAN PHYSICAL SOCIETY 39 2 350 354 scie scopus kci other 000170466700027 2-s2.0-0035535681 Physics, Multidisciplinary Physics Article HYSTERESIS DYNAMICS CO FILMS SPIN NUCLEATION ANISOTROPY MODEL