TY - JOUR
T1 - Magnetization dynamics of a CrO2 grain studied by micro-Hall magnetometry
AU - Das, P.
AU - Porrati, F.
AU - Wirth, S.
AU - Bajpai, A.
AU - Huth, M.
AU - Ohno, Y.
AU - Ohno, H.
AU - Müller, J.
N1 - Funding Information:
The work was supported by the Deutsche Forschungsgemeinschaft through the Emmy Noether program. A.B. acknowledges support through EU Marie Curie IIF project Grant No. 040127-NAWMATCR. We acknowledge the help of F. Wolny at IFW Dresden with the placement of the grain on the Hall device.
PY - 2010/7/26
Y1 - 2010/7/26
N2 - Micro-Hall magnetometry is employed to study the magnetization dynamics of a single, micron-size CrO2 grain. With this technique, we track the motion of a single domain wall, which allows us to probe the distribution of imperfections throughout the material. An external magnetic field along the grain's easy magnetization direction induces magnetization reversal, giving rise to a series of sharp jumps in magnetization. Supported by micromagnetic simulations, we identify the transition to a state with a single cross-tie domain wall, where pinning/depinning of the wall results in stochastic Barkhausen jumps.
AB - Micro-Hall magnetometry is employed to study the magnetization dynamics of a single, micron-size CrO2 grain. With this technique, we track the motion of a single domain wall, which allows us to probe the distribution of imperfections throughout the material. An external magnetic field along the grain's easy magnetization direction induces magnetization reversal, giving rise to a series of sharp jumps in magnetization. Supported by micromagnetic simulations, we identify the transition to a state with a single cross-tie domain wall, where pinning/depinning of the wall results in stochastic Barkhausen jumps.
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U2 - 10.1063/1.3467870
DO - 10.1063/1.3467870
M3 - Article
AN - SCOPUS:77955749972
SN - 0003-6951
VL - 97
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 4
M1 - 042507
ER -