| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetic Properties of Spin-Ladder Compound Sr14(Cu1-yFey)24O41 |
HU Ni1,2, LU Zhi-Hong3, CHENG Li1, XIONG Rui1, SHI Jing1,4 |
| 1Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan 430072 2School of Science, Hubei University of Technology, Wuhan 430068 3School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430072 4International Center of Materials Physics, Chinese Academy of Sciences, Shenyang 110016 |
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| Cite this article: |
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HU Ni, LU Zhi-Hong, CHENG Li et al 2010 Chin. Phys. Lett. 27 087502 |
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Abstract Magnetic properties of spin-ladder compounds Sr14(Cu1-yFey)24O41 (0 ≤ y ≤ 0.05) are investigated in the temperature range from 10 to 300 K. The result reveals that all the samples exhibit magnetic crossover behavior in the paramagnetic range, and Fe3+ doping can efficiently increase the susceptibility due to the large moment of Fe3+. Both the observations are consistent with our previous investigation on transport behaviors, indicating the strong correlation between the magnetism and transport behaviors. The spin gap is evidenced in all the samples, and strengthens as Fe3+ doping level increases, which can be associated with the antiferromagnetic interaction between Fe3+ and Cu cations.
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| Keywords:
75.30.Cr
75.25.+z
75.50.Ee
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Received: 16 November 2009
Published: 28 July 2010
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