@article{e5b779756afe4218b4f2a70cf6ff0820,
title = "Enhancement of magnetoresistance using CoFe/Ru/CoFe synthetic ferrimagnetic pinned layer in BiFeO 3 based spin-valves",
abstract = "SrTiO 3 (100) sub/BiFeO 3/CoFe/Ru/CoFe/Cu/CoFe/Ta structure was prepared by a combination of chemical solution deposition and sputtering method, and followed by a systematical investigation for the structural, magnetic and magnetoresistance properties at room temperature (RT) as a function of CoFe and Ru thicknesses. It was revealed that introduction of synthetic CoFe/Ru/CoFe as a pinning layer increased the giant magentoresistance (MR) ratio to 8.3 at RT. This enhancement of MR ratio might be attributed to (i) the increase of pinning field, and (ii) suppression of the influence of the surface roughness of BiFeO 3 by inserting the synthetic CoFe/Ru/CoFe layer.",
author = "Hiroshi Naganuma and Bae, {In Tae} and Takamichi Miyazaki and Miho Kubota and Nobuhito Inami and Yuki Kawada and Mikihiko Oogane and Shigemi Mizukami and Han, {X. F.} and Yasuo Ando",
note = "Funding Information: We thank Professor S. Okamura in Tokyo University of Science for preparing the samples of the BiFeO films. This work was partly supported by Grant-in-Aid for challenging Exploratory Research (Grant No. 23656025), by JSPS through FIRST program, by NSFC-JSPS international Joint Research Fund, by Grant for Advanced Industrial Technology Development by NEDO, and by research grant from TANAKA HOLDINGS Co. Ltd., and ITB is also grateful to New York Center of Excellence, New York State Office of Science, Technology, and Innovation, and Empire State Development Corporation for partial financial support. 3",
year = "2012",
month = aug,
day = "13",
doi = "10.1063/1.4745504",
language = "English",
volume = "101",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "7",
}