@article{27fe022d173a4ba184ed8e7059b07df0,
title = "Direct visualization of dipolar ferromagnetic domain structures in Co nanoparticle monolayers by electron holography",
abstract = "Electron holography has revealed dipolar ferromagnetic domain structures in ordered monolayer arrays of Co nanoparticles. In zero-field-cooling experiments, we demonstrate the formation of micron-sized magnetically ordered regions with transverse domain walls, and a spatially varying moment order parameter. Truncated vortex structures that can be modified by an applied field are observed near the sample edges. The collectively magnetized state shows soft magnetic properties and long-range order that is stable over times over 1 h at 108 K.",
author = "Kazuo Yamamoto and Majetich, {Sara A.} and Martha McCartney and Madhur Sachan and Saeki Yamamuro and Tsukasa Hirayama",
note = "Funding Information: This study was supported by Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists. This work was also supported by NSF Grant Nos. ECCS-0304453 and ECCS-0507050. We are grateful to Professor David J. Smith for the opportunity to carry out this research in Arizona State University and for his valuable comments. We gratefully acknowledge the use of facilities within the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",
year = "2008",
doi = "10.1063/1.2973675",
language = "English (US)",
volume = "93",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "8",
}