TY - JOUR
T1 - Magnetic bubbles in FePt nanodots with perpendicular anisotropy
AU - Moutafis, C.
AU - Komineas, S.
AU - Vaz, C. A.F.
AU - Bland, J. A.C.
AU - Shima, T.
AU - Seki, T.
AU - Takanashi, K.
PY - 2007/9/24
Y1 - 2007/9/24
N2 - We present experimental evidence, by magnetic force microscopy, for the existence of magnetic bubbles in suitably designed high-quality circular FePt nanodots. We specifically study dots of sizes where this fundamental magnetic state is a ground state and it is spontaneously created. We also observe triple-domain states consisting of concentric rings with alternating magnetization. A numerical study confirms the range of stability of the observed magnetic states and predicts the phase diagram in parameter space. Differences in the topology of these states imply distinct dynamical behavior, providing the basis for fundamental dynamical studies.
AB - We present experimental evidence, by magnetic force microscopy, for the existence of magnetic bubbles in suitably designed high-quality circular FePt nanodots. We specifically study dots of sizes where this fundamental magnetic state is a ground state and it is spontaneously created. We also observe triple-domain states consisting of concentric rings with alternating magnetization. A numerical study confirms the range of stability of the observed magnetic states and predicts the phase diagram in parameter space. Differences in the topology of these states imply distinct dynamical behavior, providing the basis for fundamental dynamical studies.
UR - http://www.scopus.com/inward/record.url?scp=34848846292&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34848846292&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.76.104426
DO - 10.1103/PhysRevB.76.104426
M3 - Article
AN - SCOPUS:34848846292
SN - 1098-0121
VL - 76
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
M1 - 104426
ER -