@article{9d6662da85674539bd1b372812316e9d,
title = "Transition between onion states and vortex states in exchange-coupled Ni-FeMn-Ir asymmetric ring dots",
abstract = "The transition between onion states and vortex states in exchange-coupled Ni-FeMn-Ir asymmetric ring dots has been investigated. A direction of domain wall motion, during the transition from the single-domain state to the vortex state via the onion state, depends on a sweep direction of an external field. This dependence fixes the directions of vortical magnetizations in the vortex states. The derivative of the amount of the domain wall motion with respect to the external field depends on the sweep direction of external field, and thus the hysteresis loop becomes asymmetric.",
author = "Isao Sasaki and Ryoichi Nakatani and Yasushi Endo and Yoshio Kawamura and Masahiko Yamamoto and Takashi Takenaga and Sunao Aya and Takeharu Kuroiwa and Sadeh Beysen and Hiroshi Kobayashi",
note = "Funding Information: This work was partially supported by a Grant-in-Aid for General Scientific Research (S), and Exploratory Research from the Japanese Ministry of Education, Sports, Culture, Science and Technology. This work was also partially supported by Priority Assistance of the Formation of Worldwide Renowned Centers of Research—The 21st Century COE Program (Project: Center of Excellence for Advances Structural and Functional Materials Design).",
year = "2006",
doi = "10.1063/1.2164435",
language = "English",
volume = "99",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "8",
}