TY - JOUR
T1 - Lorentz microscopy study on magnetization reversal process in single-domain state in perovskite-type manganite
AU - Mamishin, Shuichi
AU - Kasai, Hiroto
AU - Xia, Weixing
AU - Murakami, Yasukazu
AU - Shindo, Daisuke
AU - Mori, Shigeo
AU - Tonomura, Akira
PY - 2010/6
Y1 - 2010/6
N2 - The phenomenon of ferromagnetic domain switching, which occurred in a colossal magnetoresistive manganite La0:25Pr0:375Ca 0:375MnO3, was studied by sophisticated transmission electron microscopy techniques. Lorentz microscopy observations revealed the size dependence of the magnetization reversal behaviors. A small single-domain (70 nm) exhibited a direct switching process to another single-domain form, while a large single domain (150 nm) showed a multiple-domain configuration before the transformation to another single-domain state. We also demonstrated significant magnetic interaction in an assembly of single domains; i.e., neighboring single domains underwent magnetization reversal simultaneously. The results provide useful information for a deeper understanding of the switching process in a single-domain state, which can be observed in many advanced materials related to magnetic data storage media.
AB - The phenomenon of ferromagnetic domain switching, which occurred in a colossal magnetoresistive manganite La0:25Pr0:375Ca 0:375MnO3, was studied by sophisticated transmission electron microscopy techniques. Lorentz microscopy observations revealed the size dependence of the magnetization reversal behaviors. A small single-domain (70 nm) exhibited a direct switching process to another single-domain form, while a large single domain (150 nm) showed a multiple-domain configuration before the transformation to another single-domain state. We also demonstrated significant magnetic interaction in an assembly of single domains; i.e., neighboring single domains underwent magnetization reversal simultaneously. The results provide useful information for a deeper understanding of the switching process in a single-domain state, which can be observed in many advanced materials related to magnetic data storage media.
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U2 - 10.1143/JJAP.49.063003
DO - 10.1143/JJAP.49.063003
M3 - Article
AN - SCOPUS:77955313208
VL - 49
SP - 630031
EP - 630034
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
SN - 0021-4922
IS - 6 PART 1
ER -