@article{fa062b62c6bd43e9b4f52d7ba36b4fee,
title = "Giant negative uniaxial magnetocrystalline anisotropy of Co 80Ir20 sputtered films with perfect hexagonal-close-packed and composition-modulated atomic layer stacking",
abstract = "Co80Ir20 films with negative uniaxial magnetocrystalline anisotropy (Ku) are investigated with respect to the regularity of the stacking sequence and atomic site arrangement. Substrate heating at 600 °C enhances the negative Ku of Co 80Ir20 to -9.6 × 106 erg/cm3. X-ray diffraction analysis and scanning transmission electron microscopy of the Co80Ir20 film fabricated at 600 °C indicate (1) a near perfect hexagonal-close-packed (hcp) stacking structure and (2) an atomic layered structure that consists of randomly sequenced Ir-rich and Ir-poor layers. These hcp and composition-modulated atomic layer stacking structures are considered to be the reason for the enhancement of the negative Ku.",
author = "Naoki Nozawa and Shin Saito and Takuya Kimura and Kazunari Shibuya and Kazuya Hoshino and Shintaro Hinata and Migaku Takahashi",
note = "Funding Information: The authors gratefully acknowledge Y. Nakamura and T. Uruno of JX Nippon Mining & Metals Co., Ltd. for their cooperation with the fabrication of the CoIr target used in this work. The authors would also like to thank K. Yamaguchi and N. Goto of Ohara, Inc. for provision of all the crystallized glass substrates used in this study. This work was supported in part by the Storage Research Consortium (SRC) of Japan and by a Grant-in-aid (Kakenhi No. 22·2544) from the Japan Society for the Promotion of Science (JSPS). 80 20",
year = "2013",
month = jan,
day = "7",
doi = "10.1063/1.4773998",
language = "English",
volume = "102",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "1",
}