TY - JOUR
T1 - Bistability condition of circular nanomagnet
AU - Kitakami, Osamu
AU - Okamoto, Satoshi
AU - Kikuchi, Nobuaki
AU - Shimatsu, Takehito
AU - Mitsuzuka, Kaname
AU - Aoi, Hajime
PY - 2009/12
Y1 - 2009/12
N2 - We have examined the bistability condition of a circular magnetic dot by extending Thiele's bubble domain theory for an infinite continuous film to a finite one, and have found that the dot is always bistable at least when its diameter is D ≤ 4 /, where / is the characteristic length given by / = σw/4πMa2 (σw: wall energy per unit area, Ma: saturation magnetization). This domain theory naturally explains the dot size dependence of the nucleation field without any assumptions.
AB - We have examined the bistability condition of a circular magnetic dot by extending Thiele's bubble domain theory for an infinite continuous film to a finite one, and have found that the dot is always bistable at least when its diameter is D ≤ 4 /, where / is the characteristic length given by / = σw/4πMa2 (σw: wall energy per unit area, Ma: saturation magnetization). This domain theory naturally explains the dot size dependence of the nucleation field without any assumptions.
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U2 - 10.1143/APEX.2.123002
DO - 10.1143/APEX.2.123002
M3 - Article
AN - SCOPUS:73149122138
SN - 1882-0778
VL - 2
JO - Applied Physics Express
JF - Applied Physics Express
IS - 12
M1 - 123002
ER -