@article{fef0c8d903ea4d559852852d3c3f8231,
title = "Structure and magnetoresistance of current-perpendicular-to-plane pseudo spin valves using Co2Mn(Ga0.25Ge0.75) Heusler alloy",
abstract = "We have investigated the structure and magnetoresistance of current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) pseudo spin valves (PSVs) using Co2Mn(Ga0.25Ge0.75) (CMGG) Heusler alloy ferromagnetic layers annealed at different temperatures. Relatively large ΔRA of 6.1 mΩμm2 and MR ratio of 40.2% were obtained in the CPP-PSV annealed at 400 °C. Annealing at higher than 400 °C led to a significant deterioration of MR outputs. Detailed structure analysis using transmission electron microscopy, three-dimensional atom probe, and synchrotron x-ray diffraction showed that the degradation of MR in the over-annealed sample was due to the increase of DO3 disorder in the CMGG layer, while the layered structure of the film is fully preserved.",
author = "Takahashi, {Y. K.} and N. Hase and M. Kodzuka and A. Itoh and T. Koganezawa and T. Furubayashi and S. Li and Varaprasad, {B. S.D.Ch S.} and T. Ohkubo and K. Hono",
note = "Funding Information: The authors thank Dr. Y. Sakuraba at Tohoku Univ. and Dr. M. Hayashi at NIMS for valuable discussions and advice, Dr. T. Nakamura and Dr. M. Suzuki of JASRI for arranging the synchrotron x-ray diffraction. N.H., M.K., and A.I. thank the National Institute for Materials Science for providing a NIMS junior research assistantship. The synchrotron radiation experiments were performed at the BL46XU of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal No. 2012B1213). This work was in part supported by the Grant-in-Aid for Scientific Research (A) (Grant No. 22246091) Strategic Japanese-German Cooperative Program and Advanced Storage Technology Consortium (ASTC), IDEMA.",
year = "2013",
month = jun,
day = "14",
doi = "10.1063/1.4809643",
language = "English",
volume = "113",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "22",
}