| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetic Behaviour of Sm2Co7/Fe/Sm2 Co7, Nanocomposite Trilayers with Cr and Ti Additions |
| F. Shahzad1,2, S. A. Siddiqi2, J. Zhou3 |
| 1Advanced Light Source, Berkeley Lab, University of California, Berkeley, CA 94720, USA2Centre for Solid State Physics, University of the Punjab, Lahore-54590, Pakistan3Department of Physics, University of California, Berkeley, California 94720, USA |
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| Cite this article: |
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F. Shahzad, S. A. Siddiqi, J. Zhou 2009 Chin. Phys. Lett. 26 037701 |
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Abstract Trilayered Sm2Co7/Fe/Sm2Co7 spring exchange magnets are fabricated by dc magnetron sputtering on MgO substrates. Very thin layers (0.3-0.7nm) of Cr and Ti are added at the interfaces of the two magnetic phases. The thickness of Sm2Co7 is kept at 20nm and Fe at 6nm while the thickness of Cr and Ti are
varied as 0.3, 0.5, and 0.7nm. The base pressure of sputtering chamber is kept below 10-7Torr and Ar pressure at 3-8mTorr. The samples are haracterized by x-ray diffraction (XRD) and SQUID magnetometer. We report improvement in exchange coupling of nonacomposite magnets by addition of thin layers of Cr at interfaces.
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| Keywords:
77.84.Lf
81.15.Cd
75.70.-i
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Received: 10 November 2008
Published: 19 February 2009
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| PACS: |
77.84.Lf
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(Composite materials)
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81.15.Cd
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(Deposition by sputtering)
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75.70.-i
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(Magnetic properties of thin films, surfaces, and interfaces)
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